Tag Archives: Ultralight DXpedition

Gary Debock’s report from the 2020 Rockwork Ocean Cliff Ultralight DXpedition

Many thanks to SWLing Post contributor, Gary Debock, who shares a short report he originally posted on Facebook from the Rockwork 2020 Ultralight DXpedition:


Rockwork 2020 started off with a monster session, with S9 signals from the likes of 320-AI (Aitutaki, Cook Islands), 352-RG (Rarotonga, Cook Islands), 558-Radio Fiji One, 603-Radio Waatea, 1017-Tonga, 1107-Magic Talk and the new 1503-Gold.

The session was kind of wild, with three different sets of visitors asking about my gear setup at Rockwork 4 (typically during critical moments of live DXing, of course :-). Despite this both Longwave and Medium Wave featured great propagation to New Zealand, with the long range beacon 238-KT (Kaitaia) opening up the fun around 1225. Switching back and forth between Longwave and MW in a live DXing format wasn’t exactly ideal, and no doubt my long time DXpedition partner Tom R. could have really cleaned up on the South Pacific beacons this morning with his SDR and broadband loop setup. As it was I came away with 238-KT, 320-AI (a monster signal), 352-RG and 366-PNI from across the equator, with 558-Radio Fiji One probably having its best session ever at the awesome ocean side cliff (extended S9+ periods between 1300-1330).

I promised long term “Cliffhanger DX” partner Craig Barnes that I would go all-out to receive some exotic DX in his honor, and the Cliff more than cooperated.

The Longwave and Medium Wave DX this morning [Auguest 5, 2020] was phenomenal, and there are still two more days before Tom gets here. Hopefully these conditions will stick around!

Audio samples

320 AI Aitutaki, Cook Islands Great signal but shaky sounding CW tone at 1239– best signal ever at the Cliff:

352 RG Rarotonga, Cook Islands In an S9 snarl with 353-LLD (Hawaiian mega-beacon) at 1256:

558 Radio Fiji One Suva, Fiji Overwhelming S9 signal and ID’s both before and after an island music song at 1312:

1017 A3Z Nuku’alofa, Tonga Female Tongan in an S9 snarl with DU sports co-channel (2KY?) at 1253:

More New Zealand monster signals from yesterday morning, courtesy of the “Kiwi Cliff.” This place’s preference for New Zealand signals is wacky to the extreme!

603 Radio Waatea Auckland, NZ 5 kW S9 Maori island music // 765 followed by a female Maori chant at 1309:

1107 Magic Talk Tauranga, NZ 10 kW Meltdown level Kiwi conversation between host and lady caller at 1255:

1503 Gold Wellington/ Christchurch, NZ 5/ 2.5 kW The old Radio Sports’ Yankee-accented English (from Fox Sports Network) has now been replaced by rocking oldies, such as Phil Collins with powerful strength at 1307:

73 and Good DX,

Gary DeBock (DXing at the Rockwork Ocean Cliff near Manzanita, OR, USA)
7.5″ loopstick CC Skywaves, PL-380 & XHDATA D-808
12″ Longwave FSL + three new 8″ Medium Wave FSL’s


Thank you so much, Gary, for allowing me to share your reports on the SWLing Post. Many of us would love to experience mediumwave DXing from your Rockwood perch, but we’ll have to live it vicariously through your excellent reports! We wish you excellent DX!

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Gary DeBock’s November 2018 Poipu, Hawaii Ultralight DXpedition

Many thanks to SWLing Post contributor, Gary DeBock, for sharing the following guest post:


November 2018 Poipu, Hawaii Ultralight DXpedition

A Thrilling Sample of Forward Pacific Propagation

By Gary DeBock, Puyallup, WA, USA   January 2019

In late September my wife and I stumbled across an outstanding 6-day Costco Travel package to the Aston at Poipu Kai on Hawaii’s Kauai island, the westernmost of the main Hawaiian islands (and closest to Asia). Included in the $2.3K cost was roundtrip airfare for two on Alaska Air (nonstop from Seattle both ways, with no “red-eye” flights), 5 nights at a gorgeous, beachside 2-BR condo with a patio area ideal for TP-DXing (and within easy walking distance to the island’s best snorkeling beach), a full sized new rental car and a $50 Costco cash card to use for a little spending $$. This was far and away the best travel bargain we have ever had to the Hawaiian Islands– and right in the middle of the DX season!

The location at Poipu Kai was at the extreme southeastern tip of Kauai Island, which offered a clear, unobstructed salt water path to Asia, ANZ, the Pacific islands and both North and South America. Unfortunately, it also offered a clear salt water path to the RF Zoo of Honolulu (more about that later).

Of course, before you can chase DX in Hawaii you will need to bring along some kind of radio and antenna– whether it is a hot-performing portable, an SDR along with a small broadband antenna or an Ultralight with a “Frequent Flyer” miniature FSL. Whatever you bring will need to go through TSA inspections both ways– so try not to get too complicated or extravagant. Fragile items can be taken in hand-carry luggage, so use this for radios, FSL antennas, digital recorders and anything else that could be smashed. Also keep in mind that many large motels and condos do not allow external antennas to be set up on their property– and most of them generate enough indoor RFI to make DXing indoors a lost cause. Before leaving for the Islands, be ready with a DXing plan that you know will work!

For me, TP-DXing with a modified CC Skywave SSB portable and TSA-friendly 5 inch (127mm) diameter FSL antenna in the large open patio area right outside our condo meant chasing enhanced DX right in the middle of a gorgeous beach side garden (click here to view on YouTube).

These 2-BR condo complexes were overbuilt somewhat, and the mainland owners of these condos badly need the tourist rental income to pay their mortgages. The competition for this rental income is high. As such, the cost per night for a stay at one of these newer 2-BR condos on Kauai is about the same as for a well-worn 1-BR motel room in Kona (on the Big Island).

So, what can a TP-DXer expect from the transoceanic propagation at Poipu Kai? First of all, there is so much enhanced DX coming from so many different areas of the world that you will need to carefully choose your priorities. What is your main DXing thrill? For me, it was chasing exotic Asian DX that was unlikely or unavailable at home in the Pacific Northwest. Unfortunately, when I tried to do this during the evening hours on Kauai (0700-1000 UTC) there was so much enhanced transoceanic DX coming from North and South America that the frequencies became a snarling maze of languages and heterodynes. During a check of 801 for kHz Pyongyang BS at 0922 UTC the frequency was completely hijacked by 800-Radio Transmundial in the Caribbean (near South America). The same thing was going on all over the band, with North and South American stations on the 10 kHz band plan fighting it out with Asians and Pacific Islanders using the 9 kHz frequency system. Honolulu QRM added its own distinctive touch to this jumbled fiasco, and eventually I was forced to concentrate on sunrise DXing sessions in order to track down any really exotic Asian DX. The bands were so much quieter during the sunrise sessions starting around 1500 UTC. Of course, if a DXer was mainly interested in North or South American DX in Kauai he could have made out like a bandit around local sunset, when the Asian and Pacific Island stations would not yet have faded in.

The Asian propagation to Kauai Island during the sunrise sessions was like having constant exposure to the best possible TP-DXing signals that ever show up on west coast ocean beaches– except that far more of Asia was in play. Big gun Middle East stations like 702-BBC (in Oman) can show up at decent strength, and not too many TP-DXers have familiarity with Arabic. Stations like 918-Cambodia which are rare DX on the west coast often thunder in at S9, and by necessity a DXer quickly learns the Vietnam parallel frequencies for its various networks. The Chinese propaganda blasters on 666, 783 and 909 pound in like locals, and a DXer needs to wait out their sign off times in order to receive anything exotic on their frequencies. The entire situation is a crash course in surviving and thriving in the middle of nonstop exceptional propagation, which can easily overload your abilities to sort out languages, stations and programming. Depending on your TP-DXing experience, you will either find this situation thrilling or bewildering.

If you have extensive TP-DXing experience on west coast ocean beaches you will probably feel like you are on Cloud Nine, but without this experience you will probably wonder where to start. The usual Asian big guns on 594, 747, 774 and 972 are either buried in Honolulu splatter or have trouble holding down their frequencies. Language recognition of Chinese, Korean and Japanese becomes essential in sorting out unfamiliar stations, and at least basic recognition of Vietnamese, Thai and Taiwanese is helpful. In addition, knowledge of exotic station frequencies is necessary before a DXer can hope to track these exotic stations down. Many exotic station frequencies (like 576, 594, 657, 693 and others) are jumbled with Honolulu splatter, and you need to know which ones are not (702, 729, 918, 954 etc.).The amount of TP-DXing experience that you can bring to the island is directly related to the results that you can expect from DXing on the island. Fortunately, because of two previous Hawaii trips and an April visit to the Cook Islands, I was able to track down some thrilling TP-DX on Kauai– 693-Bangladesh, 702-BBC (Oman), 729-Myanmar, 918-Cambodia, 927-AIR, 954-AIR plus Vietnam stations on 675, 702, 711 and 729. An S9-level 800-Radio Transmundial in Bonaire (next to South America) jumped over to 801 during an evening session. As an example of the outstanding ocean-enhanced propagation, for the first time ever in any DXpedition I was able to receive 7 transoceanic DX stations on one frequency alone (702 kHz).

Hawaiian station splatter is a major issue in Kauai, but depending upon the location of these pests, their signals may taper off just before TP propagation collapses (around 1705 in November). On my last session I was able to finally track down the 1000 kW Asian big gun 693-Bangladesh through wicked 690-KHNR (Honolulu) spatter, probably because the pest was farther into daylight than my more westerly Kauai location. The Hawaii pests on Maui and the Big Island also display the same behavior.

Propagation slowdowns on the west coast seem to be fairly irrelevant in Hawaii, with the only difference being S9 Australian and NZ signals showing up in the null of the S9 Asians. During regular sessions the big gun ANZ stations are usually around at S5 levels in the null of the Asians, but I didn’t really go after the DU’s during the Kauai trip. The Pacific island exotic stations on 621, 1017, 1098 and 1440 were usually at S9 levels about 2 hours after local sunset, but once again the North and South American transoceanic DX stations were turning their frequencies into a pretty wild fiasco. Originally it seemed like a great idea to have a straight salt water shot to all these areas, but be careful what you wish for– you just might get it 🙂

Finally, In consideration of the exceptional value of the Costco travel package and the superb transoceanic DX propagation prevalent on the Kauai beach, this 6 day Hawaii vacation proved to be as much of a lifetime hobby thrill as visiting the exotic Cook islands in April– at less than half the cost. My strong advice to anyone who is feeling bored with his AM-DXing hobby is to step out of your comfort zone, and try something really new. You can certainly chase DX at home or at the same flat ocean beach for decades, but you are unlikely to experience anything radically different from what you have already experienced. Breakthrough results require breakthrough innovation, exploration and experimentation, and the commitment to overcome all challenges until you get the results you desire.

DXing on Kauai Island makes it easy for you. All the comforts of home are within a 20-minute drive. A Walmart, Safeway, Costco and Home Depot are all in the local area, close to your gorgeous 2-BR beach side condo. You don’t even need to change currency or bring a passport (well, at least if you live south of the border). An outstanding snorkeling beach is a 5 minute walk away, and the “Garden Island” is one of the most beautiful in the entire Hawaiian chain, waiting for you to explore it in your new, full-sized rental car. What more could you ask for? So go ahead and take the plunge… and discover the exceptional thrill of forward Pacific TP-DXing!

Listed below are 94 transoceanic DX receptions made in Kauai with the related recording links, including stations in Oman, Egypt, Iran, India, Bangladesh, Myanmar, Cambodia, Thailand, Vietnam and many others. Sincere thanks is given to all who helped identify mystery stations, especially the Finnish DXers like Mauno, Mika, Jari L. and Jari S. with their awesome language identification skills. You guys really rock!

531  JOQG   Morioka, Japan, 10 kW   Male-female Japanese conversation at good level // 729 at 1542 on 11-8; weak co-channel underneath https://dreamcrafts.box.com/s/n4jmmtcrfz27ndi3pj479uzt6dx5zzyi

531  UnID-Chinese   Female speech in apparent Mandarin mixing with NHK1’s male speech at 1543 on 11-8, but no indication whether this was the Mainland or Taiwan https://dreamcrafts.box.com/s/mh8iq0j49wx9hxbg0xrp8bhk0ugkopl8

540  CNR1 Synchros   China   Chinese speech with serious echo effect (poorly coordinated network) at very good level at 1510 on 11-4 https://dreamcrafts.box.com/s/gb5j3a6jlbt2natz372q4jnoer69hft9

540  UnID-Spanish   During a search for Samoa at 0738 on 11-6 this strong mystery Spanish station monopolized the frequency; both North and South America had a clear salt water path to my DXing site, making it tough to chase the Pacific islands after sunset https://dreamcrafts.box.com/s/vm0datfx40j4ie2mxyioby62in9v81wl

549  UnID-TP   This was a rough frequency because of 550-Maui, but there is a 1200 kW CNR5 station on the frequency, and some female speech with apparent Chinese intonation was getting through Maui’s male speech at 1515 on 11-4 https://dreamcrafts.box.com/s/jrbdmp4mb3cd9935dze9v5l2st4ig5ed

603  2RN   Nowra, Australia, 10 kW   Male-female DU English conversation not // 612 at 1541 on 11-7 over UnID music station during auroral conditions https://dreamcrafts.box.com/s/6vwkk6f197qg33q2hgmqnoocz2jstviu

603  CRI   Dongfang, China, 300 kW   Vietnamese service with Chinese lessons very strong at 1456 on 11-6  https://dreamcrafts.box.com/s/sv0u58fu062eblcno5xdnztwdaralsoe

Chinese ID and TOH fanfare at good level at 1500 on 11-6 https://dreamcrafts.box.com/s/kj9891ur1fkzfks3yycf78uqbdmn51xb

603  HLSA   Namyang, S. Korea, 500 kW   Presumed the station with Korean intonation under strong Chinese music from CRI during its Vietnamese service at 1512 on 11-3 https://dreamcrafts.box.com/s/0uruseu0ejdxa587llns1gkgd34gr0ey

603  UnID   Music station mixing with 2RN during auroral conditions at 1541 on 11-7; most likely NZ’s Radio Waatea  https://dreamcrafts.box.com/s/6vwkk6f197qg33q2hgmqnoocz2jstviu

612  4QR   Brisbane, Australia, 50 kW   Overwhelming signal with call-in quiz program during auroral conditions at 1536 on 11-7; this was the strongest Oz signal during the trip https://dreamcrafts.box.com/s/xlx5s7acnqxilehj4yfdartp6yda1b4l

612  JOLK   Fukuoka, Japan, 100 kW   Good signal with Japanese male conversation // 729 at 1516 on 11-4  https://dreamcrafts.box.com/s/491nyli0zpiyoomht2mydrbl6zd66ysr

621  China   (Heilongjiang?)   Chinese music at good level but suffering from the throbbing Pyongyang BS transmitter on the same frequency at 1503 on 11-4 https://dreamcrafts.box.com/s/d95t13b9vhd8ib01p09gtd68j2ag7j2u

5+1 pips mixing with the awful-sounding 3+1 pips from Pyongyang BS at 1500 on 11-4 (at 39 seconds into the recording) https://dreamcrafts.box.com/s/612kbk25hqqlxh1r4qfzaxzeuuwktbeo

621  Pyongyang BS/ VOK   Chongjin, N. Korea, 500 kW   The sickest sounding transmitter on the band, with a throbbing off-frequency drift. This was the wacky audio during the VoK Japanese program at 0943 on 11-3 https://dreamcrafts.box.com/s/7d6eggmr9ntnfjej3zf22dh1s5p32wyd

621  Radio Tuvalu   Funafuti, Tuvalu, 5 kW   The usual S9+ signal with female speech in the island dialect at 0928 on 11-3, with drums pounding for emphasis https://dreamcrafts.box.com/s/5089jtrmpi5eajk330uwukvz4brqfoyk

Clear signal and 1 kHz heterodyne from Tuvalu (for the first 7 seconds) degenerates into a throbbing heterodyne and degraded signal when the FSL is re-directed at North Korea at 0942 on 11-3  https://dreamcrafts.box.com/s/po98lqzzfn1s1vmu6ul6r0tplex85mld

630  4QN   Townsville, Australia, 50 kW   Call-in talk program // 612 over DU English co-channel during auroral conditions at 1542 on 11-7 https://dreamcrafts.box.com/s/03ubp9so6jtjnywhbt3v2sehs69fzsay

630  CNR2 Synchros   China   Female Chinese speech fairly strong (but with slight muffled effect) over Asian co-channel at 1526 on 11-4 https://dreamcrafts.box.com/s/to3qzxbb5oofj447q9f4z47y4s1crqap

630  VoV?   Animated male-female speech in apparent Southeast Asian dialect dominant over CNR synchros at 1523 on 11-4; Jari S. guesses this is Vietnamese, but there was no chance at the time to check the 675-711 parallels https://dreamcrafts.box.com/s/k0ttlujgsp2p11817uhakkgrqwrzdlvj

630  UnID-DU   DU English co-channel mixing with 4QN during auroral conditions at 1542 on 11-7; experience in the Cook Islands indicates this is most likely RNZ in Hawkes Bay (but no parallels available at the time) https://dreamcrafts.box.com/s/03ubp9so6jtjnywhbt3v2sehs69fzsay

639  2HC   Coff’s Harbour, Australia, 5 kW   Australian marine weather forecast at 1504 on 11-5; despite lack of any place names, Tony Magon says that ABC stations don’t run such detailed marine weather forecasts  https://dreamcrafts.box.com/s/bjwhwkeh3ss3d0tmm6sl977pm7mftrd9

639  CNR1 Synchros   China   Male Chinese speech and music strong at 1617 on 11-7 https://dreamcrafts.box.com/s/fj8tbboshrlvpx0l9m1qcovr69zqhn1j

639  JOIP   Oita, Japan, 5 kW   Japanese female speech mixing with CNR1 at 1457 on 11-8; the Japanese DXers say that this is the NHK1 format https://dreamcrafts.box.com/s/9pkoxpg045t2y0mmuz5c2b74p2oq15wy

640  KFI   Los Angeles, CA, 50 kW   The North American stations were not targeted during this trip, but this particular one monopolized the 639 split frequency every evening, such as at 0924 on 11-3  https://dreamcrafts.box.com/s/f2mfmvymwykmbkaylmbhewvjkb25nc0k

657  China   (Henan?)   All alone with good signal (through 650 splatter) with Chinese male speech at 1609 on 11-4  https://dreamcrafts.box.com/s/pv00eqjyg64vxwltg7cjvsa0bwzaacs8

657  Pyongyang BS   Kangnam, N. Korea, 1,500 kW   The strongest N. Korean signal on the band (and one of few with a clean signal) was at overwhelming strength with music at 1533 on 11-3, with minor 650 splatter https://dreamcrafts.box.com/s/lbpugjif1lnf5cwn5vghmmb3qwhrofpy

657  Star   Wellington/ Tauranga, NZ, 50/ 10 kW   Presumed the one with Christian music at a strong level (through some 650 splatter) during auroral conditions at 1509 on 11-5 https://dreamcrafts.box.com/s/trhq06ghg71chu030263xjngun2vokf0

666  JOBK   Osaka, Japan, 100 kW   Japanese male speech // 729 at temporary good level at 1535 on 11-5  https://dreamcrafts.box.com/s/sybm328qsshfn4xvscmxxl0k1en2edy8

666  Voice of the Strait   Fuzhou, China, 600 kW   A major propaganda blaster to Taiwan, this station (along with 783) almost always had potent signals during sunrise sessions. This female pop music was at typical strength at 1550 on 11-7 https://dreamcrafts.box.com/s/3df1thw74spjesqmvuvt3mjq0dlg4jhj

675  Cheng Sheng BC   Peikang, Taiwan, 5 kW   Male-female call in talk program in Chinese dialect at 1655 on 11-7; Hiroyuki Okamura says this is Taiwanese https://dreamcrafts.box.com/s/aqd2vjmbcvofpsygksaqx4cqhc0nfbjf

Taiwanese pop music and male speech at good level at 1658 on 11-7 https://dreamcrafts.box.com/s/n98qe46dyd1vclchaz2b36s6mxc3la0w

675  NHK1 Synchros   Hakodate/ Yamaguchi, Japan, 5/ 5 kW   Male Japanese conversation at modest strength // 729 at 1557 on 11-8 https://dreamcrafts.box.com/s/2yeze49zxpo1jhyly1ap3xqqhc3l7oek

675  VoV   My Hao, Vietnam, 500 kW   Female speech at very good level // 711 at 1637 on 11-7 https://dreamcrafts.box.com/s/9sg4yp7lgfob6e5hw1wphlklnljbvwyq

693  Bangladesh Betar   Dhaka, Bangladesh, 1000 kW   The super power exotic station finally broke through wicked 690-KHNR Honolulu splatter (10 kW at 113 miles) at 1639 on 11-8 with an apparent Islamic sermon (having mentions of “Allah” at 27 and 31 seconds) https://dreamcrafts.box.com/s/haye98bfrypbt1cdb1wgma2mx01wskpx

693  JOAB   Tokyo, Japan, 500 kW   NHK2 Music box sign off chimes getting through rough 690-Honolulu splatter quite well at 1533 on 11-4 https://dreamcrafts.box.com/s/7938apvd3x8lb0tt99ytvr09kvksug8k

702  2BL   Sydney, Australia, 50 kW   Male DU English speech at good level // 612 at 1454 on 11-5  https://dreamcrafts.box.com/s/ld9wlkvmd3wkdx82ga2udkcauxivtakq

702  BBC Arabic Service   A’Seela, Oman, 800 kW   One of the big surprises of the DXpedition, this station was amazingly strong for the 8,586 mile (13,818 km) distance at 1604 on 11-6. Thanks to Mauno and Mika for the language and station investigation https://dreamcrafts.box.com/s/cwgqhpm3hy0thmthw4o018i7c70y0b8i

702  China   Jiangsu, China, 200 kW   Beijing time and fair-level ID after KCBS time pips at 1500 on 11-8; thanks to Chuck and Jari S. for ID assessment https://dreamcrafts.box.com/s/6alut7afzdg06a5ll06p54hnuc7s1j8w

702  KCBS   Chongjin, N. Korea, 50 kW   Another North Korean with transmitter issues, this station was somewhat off frequency, with degraded audio (although not as bad as 621). Its Korean ID and 3+1 pips were dominant over China at 1500 on 11-8 https://dreamcrafts.box.com/s/6alut7afzdg06a5ll06p54hnuc7s1j8w

702  NHK2 Synchros   Kitami/ Hiroshima, Japan, 10/ 10 kW   Japanese female speech at equal level with Korean speech from KCBS (along with its throbbing hum) at 1457 on 11-8 https://dreamcrafts.box.com/s/9cds03s0hq94kzo87stua4qi6orymree

702  VoV   Danang, Vietnam,  50 kW   Male and female speech at 1612 on 11-4 with announcers and format sounding very much like those on 675 and 711 (although not parallel); Jari L. says this is Vietnamese https://dreamcrafts.box.com/s/idw17ybpwsblr8evf440xnlr13z4l5c9

702  UnID-DU   Music station looping toward South Pacific mixing with 2BL during auroral conditions at 1452 on 11-5; most likely NZ’s Magic https://dreamcrafts.box.com/s/3al6uof4yobmjopsyo98nohvw1k8wuer

711  HLKA   Sorae, S. Korea, 500 kW   One of the strongest Koreans on the band, but it had co-channel issues with V.O. Kuanghua and VoV. This very strong male-female Korean speech was at 1537 on 11-3  https://dreamcrafts.box.com/s/m4ybyndsuy6ivg6jvyp1xm79ra76cqgs

711  V.O. Kuanghua   Hsinfeng, Taiwan, 250 kW   Trumpet and Kuanghua ID mixing with the 3+1 pips from HLKA at 1500 on 11-7 https://dreamcrafts.box.com/s/pvg2fdt6hq122dki4vgrtdk5imwyg21a

Chinese conversation at a good level at 1503 on 11-6 (Thanks to Tony Magon for assessment)  https://dreamcrafts.box.com/s/1xegn3xe67cm2p167bihjfdum9lf11pm

711  VoV   Thoi Long, Vietnam, 500 kW   Female speech at good level // 675 at 1529 on 11-6; this station often had co-channel issues with Korea and Taiwan https://dreamcrafts.box.com/s/j2vsyc02skttocssv3dxpxc6hknivx0s

720  China   The “Chinese opera station” was dominant on the frequency on most mornings, such as at 1553 on 11-5 with this strong signal, but its location in China is unknown https://dreamcrafts.box.com/s/tr03jtqk4qhxscdjn8erazo4944v9tlc

720  UnID-TP   Mystery Asian station (apparently not in any east Asian language) mixing with the Chinese opera station at 1536 on 11-4; Mauno and Jari S. mentioned VOIRI (Iran) as a possibility, but the Tajik and Uzbek languages being broadcast around that time are tough to identify  https://dreamcrafts.box.com/s/8l5utr5yxvybjzb2wrmaxvkoazuqmdf9

729  China   Chinese male speech mixing with JOCK’s female Japanese speech at a good level at 1456 on 11-8  https://dreamcrafts.box.com/s/4mbe26337s5j0cdsopwzxolv280je7z0

729  JOCK   Nagoya, Japan, 50 kW   Oddly enough, this was the strongest NHK1 frequency. Female Japanese speech was at a good level mixing with China at 1456 on 11-8 https://dreamcrafts.box.com/s/4mbe26337s5j0cdsopwzxolv280je7z0

729  Myanma Radio   Yangon, Myanmar, 100 kW  Male-female speech in unique Asian language with clear mention of “Myanmar” at the 46 second point at 1541 on 11-4 (thanks to Chuck for deciphering). Unfortunately 576 and 594 were wiped out by Hawaii splatter https://dreamcrafts.box.com/s/yq7uqray3bq93a6zu76kb92enk46wvq6

729  Myanma Radio?   Fading up all alone at 1625 on 11-4, this male speaker’s language and voice sound a lot like the ones in the previous recording (thanks to Bruce for language suggestion, and to Ken Alexander, a Canadian retiring in Thailand, for the improved audio file)  https://dreamcrafts.box.com/s/24c46lrjjm2329x4e1h634u3m7swn3f5

729  VoV   Dong Hoi, Vietnam, 200 kW   Male speaker in Viet-sounding language at 1615 on 11-4 with apparent mentions of “Vietnam” at the 1 second and 32 second points; Jari L. says it sounds like Vietnamese  https://dreamcrafts.box.com/s/9va1h709ki2cqyaz0z7eg380w2k8xmcr

738  BEL2   Penghu, Taiwan, 100 kW   This frequency had serious splatter from 740-Maui, but there was enough of the Chinese news format at 1517 on 11-3 spoken by the female announcer to make reasonably certain of the identity https://dreamcrafts.box.com/s/55slnp79bhb7sqjpubmnnab9j4g14804

747  JOIB   Sapporo, Japan, 500 kW   The NHK2 big gun was barely able to get by 740-Maui splatter at 0933 on 11-3, but that was better than 594-JOAK, which was totally wiped out by 590-Honolulu  https://dreamcrafts.box.com/s/zqkpa4892mi9ccdzz7qojocq8bm9lmmq

774  3LO   Melbourne, Australia, 50 kW   LR Network big gun at typical powerful strength with call-in talk at 1558 on 11-7 https://dreamcrafts.box.com/s/8094b97u3qmi3nzwb15z6bcl500zwmww

783  Voice of the Strait   Zhangpu, China, 600 kW   A major propaganda blaster to Taiwan, this was the strongest Asian station during the trip. All kinds of carefully selected music were broadcast– pop, opera and even rap (which, as Chris Kadlec says, is banned in China but is fair game to broadcast to Taiwan, where it is popular). This big gun was totally immune to any propagation downturns, as demonstrated in this local-like sign off message at 1600 on 11-7, which was actually a DU-slanted morning https://dreamcrafts.box.com/s/6cbton9gqiqvqiwe6ewfc8u0aoztv4dm

Female vocal music at an excellent level at 1551 on 11-4 (typical strength) https://dreamcrafts.box.com/s/rkfzjnew44pm1n35j815sf3zlu9x1ejq

More S9 female vocal music and 5+1 pips prior to the 1600 sign off message on 11-5 https://dreamcrafts.box.com/s/4qryk7xdtvhih5bche2iixoswcso2sl1

“Banned” Chinese rap music by Allen Su at 1502 on 11-3; a link to the YouTube video of the same song (“Beijing City”) follows (thanks to Chris Kadlec for the link) https://dreamcrafts.box.com/s/ucf9y8awzw0e3ip5ppke4abwzt22t9ts

Click here to view on YouTube.

783  UnID-China   Weak male Chinese speech continuing on the frequency after the Voice of Strait sign off at 1600 on 11-5 (from 1:10 to 1:20 in the following recording) https://dreamcrafts.box.com/s/4qryk7xdtvhih5bche2iixoswcso2sl1

792  4RN   Brisbane, Australia, 25 kW   S9 level female conversation during RN network program at 1618 on 11-6  https://dreamcrafts.box.com/s/2oe10pcuin6qvrrxtsyw5gpzy4wgjrk4

800  PJB   Bonaire, Netherlands Antilles, 440 kW   Hijacking the 801 frequency at 0921 on 11-3 with an S9 signal and “Transmundial” ID at 6 seconds, this signal was typical of powerful North and South American stations that would mix with the Asian and Pacific island stations each evening in a wild competition. Received at 5.981 miles/ 9,627 km https://dreamcrafts.box.com/s/wiotqzpyghyinwl4o1f0c3vw2s1brtbw

810  RNZ   Dunedin, NZ, 10 kW   Frigid weather report at 1604 on 11-5 during DU slanted conditions  https://dreamcrafts.box.com/s/b171bq8mute3scndqna3ej0re65vb4r6

810  UnID-TP   Weak Asian showing up at 1553 on 11-4, but not enough signal for language recognition  https://dreamcrafts.box.com/s/3luto1kh3qamg706b9ax9uqn9vawer6h

819  KCBS   Pyongyang, N. Korea, 500 kW   This Asian big gun wasn’t quite as strong as it was in Kona, Hawaii a year earlier, and suffered some minor 830-Honolulu splatter. There was no sign of the Seoul area jammer, though. Its orchestral music was at good strength at 1606 on 11-3  https://dreamcrafts.box.com/s/zmtr8yqln8lqg9419a842u802w86pryx

837  CNR5   Quanzhou, China, 1000 kW   Presumed the one with male speech in a Chinese dialect fighting it out with 830-Honolulu splatter at 1526 on 11-3 https://dreamcrafts.box.com/s/828hx6cpc0dhtsxwau7bz3uyd0x4o7um

855  Pyongyang BS   Sangwon, N. Korea, 500 kW   The usual female choral group shows up at a modest level at 1511 on 11-3. Like on 819, there was no sign of the Seoul-area jammer that showed up in Kona a year ago https://dreamcrafts.box.com/s/f4p1wfgy1qank63q9wdh8hjnyiyajrzm

864  HLKR   Gangneung, S. Korea, 100 kW   The Korean big gun is in a wild S9 snarl with a mystery Filipino station at 1539 on 11-3; this was a typical snarling Asian mix very common in the salt-water-boosted Kauai propagation https://dreamcrafts.box.com/s/edbmedfei6kjn85jvs9k21lwe8d89cxn

864  UnID-Philippines   Apparent Tagalog male speech mixing with HLKR at a strong level at 1539 on 11-3, but no indication which one of the five stations it was https://dreamcrafts.box.com/s/edbmedfei6kjn85jvs9k21lwe8d89cxn

909   CNR6   Quanzhou, China, 300 kW   Another of the Taiwan-directed propaganda blasters, this one tended to play classical or choral music, and (like 783-Voice of the Strait) it was usually at overwhelming strength. This sign off message at 1602 on 11-7 has it all– S9+ strength, a “Shenzhou zhi Sheng” female-voiced ID at 35 seconds, and even a suggestive-voiced female from 49 to 58 seconds. Current sign off is at 1604 https://dreamcrafts.box.com/s/urhk66t4mqunezupi99r0red0pt4u7ub

Typical classical music (at typical S9 strength) at 1532 on 11-4 https://dreamcrafts.box.com/s/ctsmjss2s8ly6qnzwint5yidigne44ho

Another sample of CNR6 classical music at 1510 on 11-3 https://dreamcrafts.box.com/s/0saadxt9qphazr951dfdpk51hftpm95h

909  Xinjiang RGD   Tacheng, China, 10 kW   One of the surprise receptions of the trip. The Mongolian language was unusually strong, and dominant over CNR6’s classical music at 1548 on 11-3; thanks to Mauno and Jari S. for the language identification https://dreamcrafts.box.com/s/9z54ibieboealz78p0n4zygelv41ghcf

909  JOVX   Abashiri, Japan, 5 kW   Presumed the one with Japanese female speech at 1608 on 11-7 (after the CNR6 sign off), and about 20 minutes after the usual NHK2 sign off that week (the only other Japanese station on the freq.) https://dreamcrafts.box.com/s/mnd4zqnvx5d6u35ihj7997no2r4hbz4v

918  ERTU   Bawiti, Egypt, 10 kW   Some awesome investigative work by Mauno determined that this modest signal at 1628 on 11-6 was Egyptian Arabic– one of the biggest surprises of the trip (otherwise it would have remained an UnID). Thanks for the extra effort! (8,921 miles/ 14,357 km)  https://dreamcrafts.box.com/s/hhdwsw42ok5pcevh41amx9i7ln3cxmag

918  RNK   Phnom Penh, Kampuchea, 600 kW   One of the biggest stars of the DXpedition, with S9-level Kampuchean pop music almost every morning around 1630, burying Shandong completely. Apparently there is some special propagation between Hawaii and Southeast Asia around this time in early November. This music was at 1637 on 11-3 https://dreamcrafts.box.com/s/6ohs2orw3o1w5oiqyfyfxcczsrvykazq

Booming pop music at 1653 on 11-8 https://dreamcrafts.box.com/s/yimn4viqpff60d85ek5cvt1yxe6d5orb

Burying Shandong at 1635 on 11-8 https://dreamcrafts.box.com/s/geenpiko5i7rkohvdxwhfnbkavb928fe

Full National Anthem at 1700 sign off on 11-8 https://dreamcrafts.box.com/s/wfcfv169exidtnlflx3g0ikag1xdg7ql

918  Shandong RGD Synchros   Shandong, China   This Chinese network was mostly cannon fodder for RNK during the trip, but it did manage a very brief moment at equal strength with RNK’s high-voiced female speaker at 1553 on 11-4 https://dreamcrafts.box.com/s/pq6pl57x1j9qepa8he4lj43x48vggr6j

918  UnID-Philippines   Tagalog-sounding speech at 1602 on 11-3, but no further indication of the identity  https://dreamcrafts.box.com/s/pjot56bu42rzfhju80c7v9yoo2e386xn

927  AIR-South   Visakhapatnam, India, 100 kW   India news in English by female announcer at 1531 on 11-8 (mixing with China); with mentions of “also approved Indian…” at 9 seconds and “for India to express” at 25 seconds. Thanks very much to C.K. Raman of India for matching the recording to the AIR archives https://dreamcrafts.box.com/s/ozrw09zrlayks7nt3dxt95zeaibqmwd7

927  China   Male Chinese speech dominant over AIR’s female English speech at 1533 on 11-8, but no indication which one of the multiple Chinese stations is showing up https://dreamcrafts.box.com/s/3pvkcyypj3qzpo3b1hyxtcubghlkf6vh

927  UnID-Chinese   Male and female Chinese speech at 1600 on 11-8 with multiple mentions of the Taoist deity Wong Tai Sin, which would seem highly unlikely in the officially atheist Mainland. Maybe BCC in Taiwan? https://dreamcrafts.box.com/s/uvogxslwmgkqympbb041efmn6wp96uig

954  AIR-North   Najibabad, India, 200 kW   Female-voiced English news // 927 dominant over UnID Philippine station at 1534 on 11-8, with mention of “India” at 28 seconds https://dreamcrafts.box.com/s/htco3tjnefuoakh8xaauiuhnwav22gzc

Female-voiced English news // 927 temporarily at equal strength with JOKR at 1533 on 11-8, but slowly fading under the Japanese male speaker https://dreamcrafts.box.com/s/mllosolyokn18qmpyozv4y6gt1f3sbaj

954  China   Female Chinese dominant over JOKR at 1534 on 11-8, but no indication which of the Chinese stations is showing up https://dreamcrafts.box.com/s/35kia9v9t1w352nksqvx2pj5z2wxetx8

954  JOKR  Tokyo, Japan, 100 kW  Japanese male conversation temporarily dominant over a wild mix of AIR’s female English speech, UnID Philippine music and Chinese female speech at 1534 on 11-8  https://dreamcrafts.box.com/s/6otqthqxgkrgybxe4cn03j5rd5eo25mz

954  UnID-Philippines  Persistently strong Tagalog-speaking lady dominant over co-channels at 1512 on 11-8, but there were no definite identity clues despite the signal strength (thanks to Vlad T. and Jari S. for the language identification) https://dreamcrafts.box.com/s/wsfgz5aysxey1dw1ecd3jnq0r3v96loz

The same female Tagalog speaker came back to dominate the frequency at 1552 on 11-8 in a conversation with someone, but with three Philippine stations on the frequency the identity remains a mystery  https://dreamcrafts.box.com/s/gfwl7oisg9cdrsfxqp7t6vuqu1lc05gi

972  China   Henan Economic Service?   Persistent co-channel under HLCA during the week with Chinese speech format, such as at 1633 on 11-8. Rarely dominant https://dreamcrafts.box.com/s/guydly45vysak1dxbkkt178p07wfqpyy

972  HLCA   Dangjin, S. Korea, 1500 kW   The Korean big gun played the part during most sessions, although the Chinese co-channel rarely left it alone. Here was a typical S9 signal at 1532 on 11-3, over the Chinese and accented English news co-channels https://dreamcrafts.box.com/s/v3ojq208x2pmrajzgrv5uqjh1cxu2xa7

972  UnID– AIR (East)?   Accented English news from 10 seconds to 25 seconds in the following recording under HLCA at 1532 on 11-3, but there was no chance at the time to check the other AIR frequencies for a parallel. Unless Henan Economic was broadcasting in English this was most likely the 300 kW Cuttack transmitter in eastern India, with no other accented English possibilities on the frequency at the time https://dreamcrafts.box.com/s/v3ojq208x2pmrajzgrv5uqjh1cxu2xa7

981  CNR1   China Synchros   Not quite as strong as in Kona, with minor splatter from 990-Honolulu. A typically strong signal was at 1505 on 11-8 https://dreamcrafts.box.com/s/1z0bdvj98dmhq9p8mhmp37xg5q5bgkcw

1008  JONR   Osaka, Japan, 50 kW  Japanese female pop music at modest strength all alone at 1610 on 11-8  https://dreamcrafts.box.com/s/3k82pa3pb541uje83jq3kof0j3irhq43

1017  A3Z   Nuku’alofa, Tonga, 10 kW   Island music with reverb-enhanced male speaker at strong level at 1617 on 11-8; the recent transmitter rejuvenation made this South Pacific station a reliable powerhouse each morning https://dreamcrafts.box.com/s/m7cvf5e2sidwi845lh4jg8c684vz8y03

1044  CRI   Changzhou, China, 300 kW   Japanese service at excellent strength with female speech at 1523 on 11-6, but suffering from some 1040-Honolulu splatter https://dreamcrafts.box.com/s/a89delbal9dtjau5klrsetbww9wleeyh

1323  CRI  Huadian, China, 600 kW   Russian service at good strength all alone at 1520 on 11-6 https://dreamcrafts.box.com/s/jaj942zuj6efhoux4nu8retd2jzg3bge

1440 JOWF   Sapporo, Japan, 50 kW   Always in a mix with Radio Kiribati every evening, the pop-oriented station with its female announcer could occasionally reach a strong level like at 0935 on 11-3  https://dreamcrafts.box.com/s/3fyr4auint1mpjvxu4tz8tm02knd5x6g

1440  Radio Kiribati   Bairiki, Tarawa, 10 kW   The usual female announcer speaking the island language got a boost from semi-auroral conditions at 0845 on 11-6 to thunder over JOWF’s Japanese female announcer https://dreamcrafts.box.com/s/cpgfb9jg414gez35y94k0aaghhh6ffcy

Kiribati could pound in at great strength over JOWF during auroral conditions, such as with this Christian worship music in the island language at 0745 on 11-6 https://dreamcrafts.box.com/s/qbq68kkr78nri0xbghi7d9q24x43zwny

1557  UnID-TP   Weak music from unknown source at 1622 on 11-8 https://dreamcrafts.box.com/s/ct5468xgnxmwgq3jqobks9fjcr3ak8f3

1566  HLAZ   Jeju, S. Korea, 250 kW   The Korean big gun with its Christian programming was seriously chopped up by 1570-Maui splatter, such as during its Chinese service at 1526 on 11-3. As such, the frequency was too noisy to chase exotic targets https://dreamcrafts.box.com/s/dpy8dlyerl0z55rdy3vuo0qv7avmu0hx

1575  Iranian Jammer   Causing severe interference to VOA-Thailand’s Bengali program at 1620 on 11-8, the “official” target of this prolific Jammer is Radio Farda in the U.A.E. The transmitter location is unknown, but likely distance to Kauai is around 8,000 miles/ 12,875 km  https://dreamcrafts.box.com/s/pn1iwgnxq3vzgf5tj9b2ek0pb6p14qg3

1575  VOA   Ban Phachi, Thailand, 1000 kW   The big gun generally got its programs through prior to 1600, but the Iranian Jammer wreaked havoc on the Bengali program by 1630. This Burmese program at 1507 on 11-7 had no problem, though https://dreamcrafts.box.com/s/zww2i6bb7yc344dh2a7qo50wq9twmhvu

1593  CNR1   Changzhou, China, 400 kW   Male Chinese speech at modest level at 1455 on 11-7  https://dreamcrafts.box.com/s/imlagv2gf4u2p1uwp28diifz7xxwqclj

1593  NHK2 Synchros   Matsue/ Niigata, Japan, 10 kW/ 10 kW   Presumed the one with Japanese-intonated female speech under CNR1’s male Chinese speech at 1454 on 11-7 https://dreamcrafts.box.com/s/1pspxzrtvefmxo4j7r65aqpn212t26ya

Broadband SDR-DXing in Hawaii—A Scouting Report

As most transoceanic DXers are aware, the Hawaiian Islands offer an exceptional opportunity for AM-DXing hobbyists to chase enhanced, salt water-boosted signals from around the world. A recent Ultralight + FSL antenna trip provided all the DXing excitement anyone could hope for, with potent signals received from Asia, the Middle East, Oceania, and both North and South America. But this was all live DXing– one frequency at a time. Is a similar trip possible using a broadband loop antenna, and an SDR to record spectrum in one of the world’s most enhanced environments?

Normally such a challenge would be unthinkable, due to external antenna restrictions and the impossibility of carrying large loop antenna components on major airlines. But the unique situation at Poipu Beach on Kauai Island is definitely worth mentioning.

First of all, there is a fully stocked Home Depot store about 15 minutes away by car, offering PVC pipes, concrete bases and antenna wire– along with any tools necessary for antenna assembly. The 2-BR condos on the Poipu Kai beach are not part of a motel, but are individually owned and rented out by a management company for owners on the mainland. I never saw a single management company official on the property during the entire 6 days, except for the night when we checked into the complex management office (and he seemed to stay right there). Each morning I set up my FSL antenna on a 5′ PVC base in the large open patio area behind our condo from 0400-0700 local time (1400-1700 UTC), and never was questioned by anybody– let alone anybody from the management company. I’m pretty sure that small, breakdown versions of broadband antennas (such as the type that both Chuck and Tom have become skillful in setting up at the Rockwork cliff every August) would be fully acceptable during these sunrise enhancement sessions in Hawaii. There is excellent, free Wi-Fi available at the site for checking parallels and web streams, and fragile items like the SDR receivers and Wellbrook amps could be carried in hand carry luggage, similar to how I carry the Ultralights and FSL antennas. After such a broadband DXpedition the antenna parts could be probably be returned to the local Home Depot store, possibly with a chance of refunds.

Of course with a such a pioneering effort there will always be challenges and surprising discoveries, and a sense of optimism and adventure will prove to be most useful. But the opportunity certainly is there– as well as the chance to conduct a breakthrough DXpedition that could be of legendary success.


What an amazing report, Gary! I’ll admit, I’m just a wee bit envious of your Ultralight DXpedition locations! Thanks for sharing the details an, especially, your recordings! Inspiring!

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Sunset DX on Gary DeBock’s Cook Islands DXpedition

Many thanks to SWLing Post contributor, Gary DeBock, who shares the following notes from his Cook Islands Ultralight DXpedition:


Sunset on the Cook Islands

Aitutaki Sunset DX

Aitutaki in the Cook Islands had some dazzling sunsets, and [my wife] loved to take sunset pictures with her new phone. Of course, I participated as well. As a result, sunset DXing was pretty rare while on the trip, although 7 USA mainland stations crashed the Kiwi sunset skip DXing sessions later in the evening around 0700 UTC. None of the usual Vancouver-Seattle-Portland-San Francisco TP-DXing pest stations made it to the South Pacific, though– and I didn’t miss them a bit! 

610 KEAR San Francisco, California (5 kW at 4,610 miles/ 7,419 km) “Family Radio for the West Coast,” Christian religious format received at fair level at 0835 UTC on 4-12:

Click here to download audio.

640 KFI Los Angeles, California (50 kW at 4,570 miles/ 7,355 km) Strong (S9) level with commercial ads at 0633 UTC on 4-12:

Click here to download audio.

1070 KNX Los Angeles, California (50 kW at 4.570 miles/ 7,355 km) Powerful (S7) level with “1070 Newsradio” ID at 3 seconds, followed by national news at 0730 UTC on 4-10:

Click here to download audio.

1160 KSL Salt Lake City, Utah (50 kw at 5,144 miles/ 8,278 km) Powerful (S7) level with weather and station ID at 33 seconds, followed by public service ads at 0901 UTC on 4-12:

Click here to download audio.

1170 KFAQ Tulsa, Oklahoma (50 kW at 5,642 miles/ 9,080 km) Strong signal over apparent DU English co-channel with “Coast-to-Coast” ID at 44 seconds; thanks to Richard Allen for confirming the broadcast of the program on the station at 0845 UTC on 4-12:

Click here to download audio.

1430 KMRB San Gabriel, California (9.8 kW at 4,577 miles/ 7,366 km) Cantonese Chinese format at S7 level with commercial ads at 0830 UTC on 4-12:

Click here to download audio.

1640 KDIA Vallejo, California (10 kW at 4,633 miles/ 7,456 km) “1640-KDIA” ID at 6 seconds with Christian religious format at S5 level at 0807 UTC on 4-10:

Click here to download audio.


Thank you for sharing, Gary!  Your enthusiasm for MW DX is infectious!

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A full report from Gary DeBock’s Cook Islands (Aitutaki) Ultralight DXpedition

Many thanks to SWLing Post contributor, Gary DeBock, who shares the following notes from his Cook Islands Ultralight DXpedition:


“Frequent Flyer” FSL antenna – Lagoon beach DXing setup photo

Checking out transoceanic DX propagation at an exotic ocean beach site can provide the hobby thrill of a lifetime– if a DXer is lucky enough to choose the ideal time, place and gear to make the chase. All of these fell into place in an amazing way during a 5-day trip to Aitutaki Island (2600 miles due south of Hawaii) with Ultralight radio gear, resulting in the reception of MW stations in India, Bangladesh, Mongolia and Cambodia– all at over 6,800 miles.

Because of extensive QRM from Australia and New Zealand the total number of Asian stations received was limited, but it was definitely a case of quality over quantity. Phenomenal gray line propagation around sunrise shut down Japanese signals almost completely, but boosted up those from the exotic countries in east and south Asia. Korean station reception was limited to the big guns, which was also primarily true for Chinese signals. Except for the ANZ pest QRM, the conditions seemed custom-designed for a west coast DXer to go after the exotic stations which rarely– if ever– show up in BC, Washington or Oregon (even though the Cook Islands’ distance to them is greater).

7.5 inch loopstick C.Crane Skywave SSB Ultralight

Ocean beach propagation at sunrise was strong enough to bring in both 693-Bangladesh and 1431-Mongolia at S9 levels almost every morning on my Ultralight gear, and allow both 657-AIR and 918-Cambodia to break through ANZ QRM on April 12th. No doubt many more of these exotic stations could have been logged except for Australian QRM on 576, 594, 872, 883 and 1566, but this only added to the thrill of the chase. The overall results were exceptional for a DXer using only a 7.5 inch loopstick Ultralight radio and 5 inch “Frequent Flyer” FSL– all designed to fit within hand-carry luggage, and easily pass through airport security inspections. Thanks very much to Alokesh Gupta, Hiroyuki Okamura, Jari Lehtinen, Chuck Hutton and Bruce Portzer, who all assisted in the identification of these stations!

657 All India Radio Kolkata, India, 200 kW (8,075 miles/ 12,995 km) Recorded by accident during a sunrise check of the Korean big guns at 1641 on April 12, reception of this longest-distance station went unnoticed until file review after return to the States. The female speaker (in the Bengali language) is the third station in the recording, after the female vocal music from Pyongyang BS and the Irish-accented male preacher from NZ’s Star network. Her speech peaks around 40 to 50 seconds into the recording. The isolation of the Star network at the 55 second point was done by the Ultralight’s loopstick, not by the propagation. Thanks to Alokesh Gupta for the language and station identification:

Click here to download an MP3 of this recording.

657 Pyongyang BS Pyongyang, N. Korea, 1500 kW Like most east Asian signals the N.K. big gun sounded pretty anemic in the Cook Islands. Its female vocal music at 1641 on April 12th shared the frequency with NZ’s Star network (Irish-accented preacher) and AIR’s female Bengali speaker:

Click here to download an MP3 of this recording.

693 Bangladesh Betar Dhaka, Bangladesh, 1000 kW (7,960 miles/ 12,810 km) Probably the biggest surprise of the DXpedition, with S9 signal peaks on 4 out of 5 sunrise sessions. Frequently snarling with the Oz pest 3AW, it usually managed a few minutes on top of the frequency each morning from 1630-1700 UTC. Exotic South Asian music was the usual format, and was very easy to distinguish from the talk-oriented format of 3AW (and other Oz co-channels). This first appearance at 1652 on 4-10 featured a “Bangladesh Betar” ID by a male speaker at 8 seconds into the recording (thanks to Chuck Hutton for listening):

Click here to download an MP3 of this recording.

This was followed by a lot of exotic music until 3AW claimed the frequency just before the 1700 TOH:

Click here to download an MP3 of this recording.

The next day (4-11) the exotic station was back with S9 peaks, including this typical music and female speaker at 1625:

Click here to download an MP3 of this recording.

The exotic music from Bangladesh was in an S9 snarl with 3AW (and another Oz pest) from 1659 throughout the 1700 TOH on April 11th:

Click here to download an MP3 of this recording.

774 JOUB Akita, Japan, 500 kW Oddly enough, this was the only Japanese signal making it to the island during the entire trip. Mixing with a goofy-sounding 3LO announcer at 1613 on 4-11, the Japanese female speech concerns a “doobutsuen” (a “zoo” in Japanese, similar to what the frequency sounded like with the 3LO announcer):

Click here to download an MP3 of this recording.

819 KCBS Pyongyang, N. Korea, 500 kW The N.K. big gun managed a potent signal for its 3+1 pips across its “TOH” at 1630 on 4-12 but never could shake off RNZ’s Tauranga transmitter:

Click here to download an MP3 of this recording.

909 CNR6 Quanzhou, China, 300 kW Strong signal with CNR ID (1:08) and Mandarin speech by male and female announcers. NZ’s Star network was apparently off the air at the time, since it was a real blaster when transmitting:

Click here to download an MP3 of this recording.

918 RNK Phnom Penh, Cambodia, 600 kW (6823 miles/ 10,981 km) Breaking through the Shandong and Oz QRM at an ideal time to dominate the frequency, its sign off transmission with the National Anthem peaked just before the 1700 TOH on April 12. Female speech in the Khmer language and exotic music are featured just before the anthem (thanks to Hiroyuki Okamura and Jari Lehtinen for listening, and identifying the National Anthem):

Click here to download an MP3 of this recording.

Chuck Hutton’s improved audio file of the same reception (thanks):

Click here to download an MP3 of this recording.

918 Shandong RGD Synchros (Multiple) The dominant Asian signal on the frequency, it rarely allowed Cambodia to sneak through. Here it is with female Mandarin speech at 1647 on 4-11:

Click here to download an MP3 of this recording.

Shandong RGD’s transmitters were poorly synchronized, resulting in the two-tone time pips at the 1700 TOH on 4-12 (during Cambodia’s National Anthem at 1:40, in the MP3 linked below). Although actually from two different transmitters, the sound effect sounds similar to that of a “cuckoo clock,” resulting in some initial confusion about their source:

Click here to download an MP3 of this recording.

972 HLCA Dangjin, S. Korea, 1500 kW The South Korean big gun played the part on most mornings, including this S9+ Korean female speech at 1631 on 4-12:

Click here to download an MP3 of this recording.

981 CNR1 Synchros Changchun/ Nanchang, China, 200 kW/ 200 kW The first of three CNR1 frequencies which usually produced strong signals, this music // 1377 was received at 1624 on 4-12:

Click here to download an MP3 of this recording.

1377 CNR1 Synchros (Various) Overall this was not only the strongest Chinese frequency on the band, but was the strongest Asian station on the band as well. Awesome S9+ signals were typical each morning, as with this male speech and music at 1622 on 4-12:

Click here to download an MP3 of this recording.

Another potent signal from this Chinese blaster at 1640 on 4-12:

Click here to download an MP3 of this recording.

1431 Mongolia (Relay Station) Choibalsan, Mongolia, 500 kW This station was easy to receive on the first attempt, with very little competition on the frequency. It typically managed an S9 signal after 1630 daily with the BBC’s Korean service, which seemed to be broadcast during the peak sunrise enhancement time in Aitutaki’s ocean-boosted propagation. Here is BBC’s Korean male announcer at an S9 level at 1632 on 4-11, with the BBC interval signal at 47 seconds into the recording:

Click here to download an MP3 of this recording.

The Mongolian relay program prior to 1630 was also in Korean, with this female Korean speech at 1627 on 4-11:

Click here to download an MP3 of this recording.

1566 HLAZ Jeju, S. Korea, 250 kW A very poor signal was typical during this trip, with the Chinese service barely showing up under 3NE and two other DU English stations (probably 4GM and Norfolk Island). Whenever 3NE was in a fade it had a chance, since other two co-channels were running very low power. Here is the latter situation, with the weak Chinese barely audible under the DU English snarl at 1641 on 4-12:

Click here to download an MP3 of this recording.

1593 CNR1 Changzhou, China, 600 kW This was another Chinese blaster, with S9 signals typical every morning. Here it was at 1641 on 4-12 with male Chinese speech and music at 1377:

Click here to download an MP3 of this recording.

73 and Good DX,

Gary DeBock (DXing in Aitutaki, Cook Islands)


Amazing, Gary! Thank you for taking us along on your excellent Ultralight DXpedition. With a modest portable radio and a little antenna ingenuity, you’re enjoying some outstanding DX! You’re living proof of the point I was trying to make in a post yesterday!

Thanks again, Gary, and good DX! 

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Gary DeBock shares most distant catch from Cook Island DXpedition

Many thanks to SWLing Post contributor, Gary DeBock, who shares the following note about his recent Cook Island DXpedition:

The farthest DX received during the Cook Island DXpedition (on Aitutaki island) was 657-All India Radio in Kolkata, India, at 8,072 miles (12,991 km). Recorded by accident during a sunrise check of the Korean big guns at 1641 on April 12, reception of this longest-distance station went unnoticed until file review after return to the States.

The female speaker (in the Bengali language) is the third station in the recording, after the female vocal music from Pyongyang BS and the Irish-accented male preacher from NZ’s Star network. Her speech peaks around 40 to 50 seconds into the recording.

The isolation of the Star network at the 55 second point was done by the Ultralight’s loopstick, not by the propagation. Thanks to Alokesh Gupta for the language and station identification!

Click here to download MP3.

Wow! A mediumwave DX catch of 8,072 miles using a compact (heavily souped-up!) CC Skywave SSB? Simply amazing, Gary!

Your enthusiasm and passion for Ultralight DX is simply infectious!

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A taste of Gary DeBock’s Cook Islands (Aitutaki) Ultralight DXpedition

Many thanks to SWLing Post contributor, Gary DeBock, who shares the following notes from his Cook Islands Ultralight DXpedition:



Cook Islands (Aitutaki) Ultralight DXpedition from April 8-13

A gorgeous environment, with thrilling long range DX! Ruth and I took this trip as the 38th anniversary of out first meeting at Victoria Peak in Hong Kong (April 10, 1980).

DXing highlights were the reception of 693-Bangladesh, 918-Cambodia and 1431-Mongolia on the 7.5 inch loopstick C.Crane Skywave SSB Ultralight and 5 inch “Frequent Flyer” FSL antenna (designed to provide inductive coupling gain equal to that of a 4 foot air core box loop, but in a much more compact size).

693-Bangladesh 1652 UTC April 10 (mention of Bangladesh at 8 second point; thanks to Chuck Hutton for listening):

Download: 693-Bangladesh-1652z041018CCSWANR

918-Cambodia 1659 UTC April 12 (Khmer female speech, National Anthem with “Cuckoo Clock” time pips at 1:41; thanks to Hiroyuki Okamura for listening):

Download: 918-Cambodia-1659z041218CCSWANR

1431-Mongolia 1631 UTC April 11 (BBC Korean service interval signal at 46 seconds; thanks to Hiroyuki Okamura for listening):

Download: 1431-Mongolia-1631z041118CCSW

Location: Tamanu Beach Resort ocean shore, Aitutaki, Cook Islands (in the South Pacific)


Amazing catches, Gary–thank you for sharing! It seems your modified CC Skywave SSB is serving you well. Looks like you were chasing amazing DX from an amazing part of our planet!

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