Author Archives: Thomas

A comprehensive SDRplay and SDRuno how-to video series

The SDRplay RSP2

Mike Ladd, with SDRplay, has done an amazing job putting together a comprehensive series of how-to videos for those of us with the SDRplay RSP1 and RSP2 receivers. His first set of videos have focused on using SDRuno (SDRplay’s custom SDR application), and now he’s started an SDR Console series as well.

I’ve embedded much of his video series below, but you can also find them at the SDRplay YouTube channel.

If you own an SDRplay RSP, take time to watch some or all of these videos as they’ll help you unlock RSP functionality you likely never knew existed. I’ve learned something new in each one I’ve watched.

Below, I’ve embedded 23 SDRuno how-to videos, a new SDR Console video and PDF/printable SDRplay documentation. Enjoy! (And thanks again, Mike!)


SDRuno Videos

#1 SDRuno Basic layout and settings

Click here to view on YouTube.

#2 SDRuno with VAC 1 of 2

Click here to view on YouTube.

#3 SDRuno VAC 2of 2 (showing MultiPSK)

Click here to view on YouTube.

#4 SDRuno Noise reduction intro on HF.

Click here to view on YouTube.

#5 SDRuno Memory Panel part 1 of 2

Click here to view on YouTube.

#6 SDRuno Memory Panel part 2 of 2

Click here to view on YouTube.

#7 SDRuno Calibrate your RSP-1 & RSP-2

Click here to view on YouTube.

#8 SDRuno VAC & DSDdecoder

Click here to view on YouTube.

#9 SDRuno Notching filter function

Click here to view on YouTube.

#10 SDRuno FM Broadcast RDS data decoding

Click here to view on YouTube.

#11 SDRuno, FTDX 3000, Omnirig & LOG4OM Logger

Click here to view on YouTube.

#12 SDRuno, FTDX 3000, Omnirig & LOG4OM Logger In Action

Click here to view on YouTube.

#13 SDRuno EX-Control Module

Click here to view on YouTube.

#14 SDRuno with CSV user list browser using virtual com ports.

Click here to view on YouTube.

#15 SDRuno & MultiPSK decoding APRS

Click here to view on YouTube.

#16 SDRuno & MultiPSK decoding ACARS

Click here to view on YouTube.

#17 SDRuno with the TM-2 USB Controller

Click here to view on YouTube.

#18 SDRuno Tune-LO-LO Lock

Click here to view on YouTube.

#19 pre-selection filters of the RSP-1 and RSP-2

Click here to view on YouTube.

#20 SDRuno and the VRX feature

Click here to view on YouTube.

MISC SDRUno videos

SDRuno EXT/IO Edition for a range of SDRs and dongles

Click here to view on YouTube.

SDRplay RSP with the DX Engineering RTR-2

Click here to view on YouTube.

Using the RSP-1 for the IARU HF World Championship

Click here to view on YouTube.

SDR Console videos (Brand new series)

#1 SDRplay RSP 1 & 2 with SDR Console v3

Click here to view on YouTube.

SDRplay How To documentation

Brand new SDRuno User Manual
http://www.sdrplay.com/docs/SDRplay_SDRuno_User_Manual.pdf

Frontend Reset
http://www.sdrplay.com/docs/SDRplay_Software_reset.pdf

Optimizing WIndows 7 for SDRuno
http://www.sdrplay.com/docs/SDRuno_Windows7.pdf

Setting up VSPE
http://www.sdrplay.com/docs/SDRuno_VSPE.pdf

Setting up VAC
http://www.sdrplay.com/docs/SDRuno_VAC.pdf

Decoding APRS using SDRuno and MultiPSK
http://www.sdrplay.com/docs/SDRuno_APRS.pdf

Decoding MIL-ALE using SDRuno and MultiPSK
http://www.sdrplay.com/docs/SDRuno_ALE.pdf

Decoding AIS Marine messages using SDRuno and MultiPSK
http://www.sdrplay.com/docs/SDRuno_AIS.pdf

Decoding ACARS messages using SDRuno and MultiPSK
http://www.sdrplay.com/docs/SDRuno_ACARS.pdf

“Go after North Korea with sanctions and short-wave radio”

(Source: Yahoo News)

Key GOP Lawmaker: Go after North Korea with sanctions and short-wave radio

WASHINGTON — House Foreign Affairs Committee Chairman Ed Royce, R.-Calif., called Wednesday for tough new sanctions on Chinese banks that do business with North Korea. Royce also said the Stalinist regime in Pyongyang has been losing its totalitarian grip on a population increasingly getting information from short-wave radio and contraband South Korean movies.

Royce said in an interview with Yahoo News on Sirius XM POTUS Channel 124 that he had met with a top North Korean defector who played up the impact of communications from the outside world as a way to pressure the government of Kim Jong Un.

“He told me that the one thing really shaking the resolve of people across North Korea is the information that’s coming in on two short-wave [radio stations] run by defectors,” Royce said. “They’re telling people what’s really going on in North Korea and in the outside world.”

The defector, Royce recalled, said, “You should help amp that up and get that all across the country.”

Voice of America and Radio Free Asia — descendants of Cold War-era information warfare — currently broadcast 10 hours per day of short- and medium-wave radio into North Korea, according to a congressional aide. And Congress doubled their Korean-language programming for the year ending Oct. 1 to $6 million, where it will stay for the next fiscal year, the aide said.[…]

Continue reading at Yahoo News…

More positive reviews of the Tivdio V-115 & Audiomax SRW-710S

This morning, I received yet another positive comment about the Tivdio V-115 (a.k.a. Audiomax SRW-710S).

This little radio is widely available on Amazon and eBay for around $19.00 – 25.00 US including shipping.  About as inexpensive as a radio gets. Both Troy Riedel and Tom Stiles gave it an overall positive review.

Check out some of these recent comments from Post readers:

Andrew H:

“I purchased the V-115 about a week ago, and was surprised at how much radio I received for $15 plus free shipping. The FM band is quite sensitive. AM is good for locals, but not exactly a DX machine. Shortwave was iffy, but improved once I tightened the antenna mount screw (I’m used to loose screws!). Depending on location, shortwave is better, but does get some bleed from strong AM’s in the area. The audio is amazing for something of this price. I have yet to try the recording, but, this has become my go-everywhere radio as of late.”

Egil – LA2PJ:

“The TVDIO V-115 is an amazing receiver. It was bought because I needed a small recording device for my portable SWL activities. I put a 32 GB into the slot, and found that the recordings all were of excellent quality. It also doubles as an external speaker for my FDM-DUO qrp transceiver.

I’ve only tried the radio part on 25m shortwave, and to my surprice the first station heard was from Brazil.

Not bad for a device costing less than USD 20 including p&p from China to Norway!”

JR:

“I recently purchased this TIVDIO radio. I am in Australia and it is a little beast of a machine.
I live in rural country area and seem to have no luck with the short wave radio. Everything else is great!

I have a 64gb micro SD card in it and can fit thousands of songs in it.

The screen is awesome, seems to detail everything going on even has a little spectrum analyzer at the bottom of screen.

The speaker along with the bass is outstanding considering the size and price of the unit.”

J D Bulow-Osborne:

“I bought two of the TIVDIO version radios several months ago. A 16GB TF card completed each one. They are, of course, re-chargeable, the sound, for the size, is excellent, the case finish is worthy of a more expensive item. Button lock, mp3 recording, auxiliary input, delete function, (including unwanted channels that the auto-tune has found), makes them a real bargain. They impress everyone who sees – and hears – them. OK, so there’s no clock or DAB, but for just over £12, including shipping from China(?), it would be really churlish to complain. One battery charge seems to last a very long time.”

Roger Waters:

“I own the Audiomax version of this radio. I have recorded classical music from an FM station using the Audiomax. When playing the recording on an iphone with $100 Audio Technica headpbones, the recording sounded quite good. Using the Audiomax to play recorded music off its storage card also sounds pretty good if the equalizer setting is Jazz and the headphones are expensive. While the Audiomax does not have a timer, its Auto On or Sleep function will save any recording when it turns off the radio automatically. When playing music off the storage card, the music can be listed according to artist. But the artist listing is not completely alphabetical. Radio reception for AM, FM, and SW is solid but not DX quality. When entering a frequency you have to wait about 4 seconds before the frequency changes. Also you cannot scroll to any desired frequency. The scrolling keys will skip over any frequency which does not have a significant signal. Where the Audiomax shines is that with a press of a button you can go from a boring commercial on the radio to some nice prerecorded music or podcast. For the radio alone, the Audiomax is worth its selling price.”

I agree with these assessments of the Tivdio/Audiomax. I’ve had this little radio for about a year now, but only really started using it around May of this year (this is the same radio I had forgotten that I’d purchased last year).  Of course, the best feature is the function that allows you to make off-air recordings and save them to a MicroSD card–it actually works quite well.  While in Canada this summer, I recorded a number of FM, MW and SW broadcasts on the Tivdio–so much easier than carrying an external recorder.

Listening to the BBC Midwinter Broadcast on June 21, 2017 in Québec.

Now if I put on my radio reviewer cap for a moment, I would have to note two issues, in particular:

  • Though receiver sensitivity is quite good, the AGC circuit is a little too over-active when receiving a weak signal. Last summer, for example, while listening to the BBC Midwinter broadcast in Québec (see photo above), the AGC was so unstable I simply didn’t bother making a recording. Admittedly, I was very impressed a $20 radio could even detect this signal. I found that nighttime mediumwave reception is also problematic, save for the strongest of stations.
  • The V-115 also seems to be quite prone to RFI indoors–more so than, say, a Tecsun PL-310ET. I suspect this is because it’s not shielded very well internally. Not an issue, if you’re listening outdoors, of course.

In truth, it’s hard to be critical of this little radio. As so many of you have echoed, for $19.00-25.00 US–? You simply can’t beat it. A great value indeed.

Click here to search for the Tivdio V-115 on eBay and click here to search Amazon.

RFA suspends in-country operations in Cambodia

(Source: Radio Free Asia)

WASHINGTON – Libby Liu, President of Radio Free Asia (RFA), today issued the following statement about RFA’s decision to suspend in-country operations in Cambodia:

After almost 20 years of bringing the Cambodian people independent, reliable and trustworthy news and information from inside the country, Radio Free Asia has regrettably been forced to close its Phnom Penh bureau. The government’s relentless crackdown on independent voices in recent weeks has made it impossible to keep the bureau open while guaranteeing the integrity of RFA’s journalistic mission.

It has become increasingly apparent that Prime Minister Hun Sun has no intention of allowing free media to continue operating inside the country ahead of the 2018 elections. The government has instead seized on every opportunity to go after critics, political opponents, NGOs, and independent media committed to reporting the truth. Using a thin pretext of tax and administrative violations, authorities have closed independent radio stations carrying RFA, Voice of America, and Voice of Democracy. The government has forced The Cambodia Daily newspaper to close due to an extreme and punitive retroactive tax bill and has kept its manager, Mr. Steele, from leaving the country under threat of criminal charges. Authorities have been employing these same tactics against RFA, despite our full cooperation at every step to comply with all requests and our sincere efforts to register as a licensed media company. Nevertheless, they have resorted to false statements and increasingly threatening and intimidating rhetoric about RFA, made mostly through leaked documents on government mouthpiece media and random statements from different ministries.

Facing down intimidation is nothing new for RFA. Our journalists and commentators have been threatened, jailed, and forced to leave the country to avoid arrest or worse. But recent developments have intensified to an unprecedented level, as Cambodia’s ruling party shamelessly seeks to remove any obstacle or influence standing in its way of achieving absolute power.

Through the years, Cambodian journalists working for RFA have risked their lives to report on corruption, illegal logging, forced evictions, bribery, labor disputes, and rights abuses, among other important stories largely ignored by state-controlled media. Their hard work has helped to build the foundation of RFA’s investigative, in-depth journalism from the ground up and has earned us the trust of the Cambodian people — to whom we also owe our heartfelt gratitude. The sacrifice and support of staff and audience alike reinforces the need for RFA to keep Cambodia’s citizens informed, so they possess a more complete and accurate picture of what’s happening in their neighborhoods, their towns, and their villages. We hope that the government will not persecute the individual brave Cambodians who worked with us in retaliation for RFA’s efforts to bring reliable free press to their countrymen and women.

RFA stands resolved to stay true to its vital mission in Cambodia, now more than ever, to go forward shining a light even in the darkest of hours. RFA will keep reporting on the most important and censored issues and events inside the country — and we will continue to broadcast and publish our programs, reports and content on shortwave radio, social media, and on our website.

As history has shown, dictators may rise and force their will on nations, but the people will always seek truth in pursuit of freedom.

Antenna installation: John would like to use home satellite TV/RG6 port

Many thanks to SWLing Post contributor, John Minor, who writes:

I am going to set up a rig to start DXing, and getting my technical license. My plan is to buy a Kenwood TS-590 SG transceiver and a discone antenna.

My home’s previous owner had satellite TV, and my question to you is, can I use the existing cabling for my antenna?

There is a connector in my living room, and the cable runs to the connector/splitter box for the dish. Could I run a cable from the end of the existing cable at the splitter box, to the antenna?

I’ve attached some pictures to show you what the existing cables look like.
Picture 6 has a circle drawn on it to show where I’d like to mount the antenna.

I remember back when I was 9 or 10, laying under the covers at night slowing turning my AM transistor radio dial and seeing what I could pick up. It was a thrill to hear stations from Chicago, Cincinnati or Little Rock. I look forward to the same thrill listening to voices from across the country and around the world……

Thank you for your time, and for the wonderful website.

Thank you, John, for your question and for the kind compliment!

I’m publishing this question here, though, in hopes the SWLing Post community can help you.  I have very little experience matching antenna impedance this way especially when transmitting will be involved–there will be a mis-match, I’m pretty sure. With that said, I know many mag loop receive-only antennas actually use RG6. It would certainly be great to use an existing penetration for this application.

Post readers: If you can help John, please do comment. Quite frankly, this isn’t the first time I’ve been asked this question, so I’ll follow comments as well.

John, I’m sure you’ll soon have your radio on the air receiving the world just like when you were nine–or even better!  Great choice in that Kenny TS-590SG–it has a brilliant general coverage receiver for broadcast listening!

Ed gives this Realistic DX-440 a bath!

Many thanks to SWLing Post contributor, Edward Ganshirt, who shares the following:
I found this critter [a Realistic DX-440–see photo above] at a flea market. At first I pondered as to when I had my last tetanus shot before handling it, then again it had something that I see rarely in these portable radios … a BFO..!

I always said that a shortwave radio without a BFO is like a Harley-Davidson with a top speed of 25 mph, so I bought it. On the way home I could smell a barnyard aroma. I ruled out chicken and hog but I think it could have been sheep or goat. So I decided to see how well it works. It took a little bumping around with loose connections to get it working. But first since it was going to be taken apart to service the case and knobs would get a nice hot bath in a sudsy ammonia citrus cleaner with a bristle brush. Also the PCB’s would get brushed down with a mixture of denatured alcohol and acetone.

Now for the hard part: finding the rickety connections. This turned out to be simple, just inspect each wire at attachment point. I found 3 broken wires that were re soldered. Now it is together I am looking for a 9 inch antenna. The one here is not original it extends 66 inches.

As to it’s performance, This Hogg can go up to 75mph now that I have the plug wires on. The user interface speaks to me as a lab instrument more than a daily listener which I think will become its role.


Absolutely amazing transformation, Ed!

I’m especially pleased to see you’ve given this level of TLC to a Realistic DX-440. I regret having ever sold mine as it accompanied me across the ocean when I studied in Grenoble, France, for a year just after high school.

The DX-440 and I did a lot of travel and a lot DXing together! I hope your DX-440 takes you across the globe, Ed!

Deal Alert: Tactical pack sale at Spec.-Ops. Brand

The Spec.-Ops. Brand THE Tactical Pack UAP

SWLing Post readers know I’m a certified pack geek. Well, I just received an email from one of my favorite tactical backpack and gear suppliers: Spec.-Ops. Brand. They’re having an unheard of 70% off sale on some of their overstocked tactical packs.

 

I’ve mentioned Spec.-Ops. in a number of previous posts as I own a lot of their gear including the T.H.E. Pack, Pack Rat, Triple S, DPO, Op Order Pouch, and All Purpose Bag.

If you’re into camping, preparedness, or just like backpacks, I highly recommend Spec.-Ops. gear. Everything is made in Texas and carries a lifetime warranty. When I bought my ($189) T.H.E. Pack Tactical, ACU on sale I got a great deal at $110–now they have this same pack for $56!! Yep–I’m likely going to buy another at this price.

Click here to view the tactical pack sale on the Spec.-Ops. Brand website.