Category Archives: Ham Radio

Uli asks: “How well does the Icom IC-705 receiver work on longwave?”

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Many thanks to SWLing Post contributor, Uli (DB1ULI), who writes:

Hello Thomas,

I started to enjoy BCL and SWL some week ago (again). I have a HAM license for many years, but was QRT for the past few years. Now, the HAM bug bit somehow again and I’ve been listening to the bands via a Tecsun H-501 but changed this one to a Reuter Pocket already.

The Reuter Pocket (Source: Reuter)

The Pocket is a really great receiver including also the FM Bands and the popular (in Europe) Digital Broadcasting DAB.

Still, it is just a receiver. So for now I am searching for a new rig, too. The current offerings are all tempting, FT-DX 10, FT-991A, IC-7300, IC-705 and so on. I really like the new models due to their features, and most due to their displays. My former rig was a Yaesu FT-897.

I already read your and the other reviews of the IC-705 (especially the BC receiving parts) and it could replace the Reuter in many ways. I am just a little bit reluctant because I like the longwave band a lot (we still have stations here) and there is no info to find anywhere how it works below 500kHz. MW seems to be on par with most other receivers.

Do you have an idea about a source of information concerning the capabilities of the IC-705 below 500kHz?

All the best and 73,
Uli

Great question, Uli. I’m hoping that some of our European IC-705 owners may be able to help you here. Although I’ve spent a lot of time on mediumwave with the IC-705, I’ve done little exploring of longwave. 

Please comment if you have thoughts on the IC-705’s longwave performance!

Radio Waves: The Barbed Wire Comms Line, FCC Denies AM Appeal, Raspberry Pi Radio Astronomy, and Interview with Dick Smith

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Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Paul, Dennis Dura, Dan Van Hoy, Alokesh Gupta,  and the Southgate ARC for the following tips:

Atrocious but efficient: How ranchers used barbed wire to make phone calls (Texas Standard)

A barbed wire telephone call didn’t sound great but could quickly warn others about something such as a wildfire.

Historian J. Evetts Haley wrote that, in its time, the old XIT Ranch up in the Texas Panhandle was “probably the largest fenced range in the world.” He recalled that its barbed wire enclosed over 3 million acres of land. At the north end alone, the fence ran for 162 miles. The unique enclosure helped keep in enormous cattle herds, keep out rustlers, and also gave rise to the creative use of a new technology: the telephone.

I’ll come back to the XIT in a moment, but first, consider these smattering of reports from that era. In 1897, The Electrical Review, reported that “on a ranch in California, telephone communication had been established between the various camps . . . by means of barbed wire fences.” The article says the novel use of the phone was a great success and was being used in Texas as well. That same year, the New England Journal of Agriculture was impressed that two Kansas farmers, living a mile apart, had attached fine telephone instruments to the barbed wire fence that connects their places and established easy communication. From the Butte Intermountain in 1902 we see this notice: “Fort Benton’s latest development is a barbed wire telephone communication.” The article points out that people of the range were not all that happy with barbed wire, which they thought was an “evil” that had arrived with the railroad, but they had decided to look at the practical side of its existence and use it to create a telephone exchange that would connect all the ranches to Fort Benton. [Continue reading…]

FCC Says No to Appeal for a New AM in L.A. (Radio World)

Schwab Multimedia has lost an appeal to the Federal Communications Commission in a case involving a planned AM station near Los Angeles for which it had a construction permit.

This is a “tolling” case, one that involves the FCC construction clock. The history is complex — the FCC’s summary is 2,500 words long, not counting many extended footnotes — but the upshot is that KWIF in Culver City was never built and, barring further developments, apparently will not be. Its call sign has now been deleted.

Levine/Schwab Partnership, which does business as Schwab Multimedia, had applied in 2004 to build a new AM station in the Los Angeles area. It eventually secured a CP in 2016 for the station at 1500 kHz. [Continue reading at Radio World…]

Radio Astronomy with Raspberry Operating System (Glen Langston)

Check out this fascinating radio astronomy project by Glen Langston that is not only affordable, but quite accessible. Thank you for the tip, Paul!

This article is in PDF form and can be downloaded from with this link.

Dick Smith Live: Adventuring, Electronics & Amateur Radio (Ham Radio DX on YouTube)

Dick Smith, VK2DIK has lived an adventurous and extraordinary life. He is a proud Australian, businessman, adventurer, entrepreneur and he single handedly changed electronics and CB/Amateur Radio in Australia.

Dick has recently released his autobiography titled, Dick Smith: My Adventurous Life and tonight we’re privileged to sit down live with Dick, speaking to him about his adventures, including the first solo helicopter flight around the world, his business ventures and being a pioneer for Amateur and CB radio.

Do you enjoy the SWLing Post?

Please consider supporting us via Patreon or our Coffee Fund!

Your support makes articles like this one possible. Thank you!

Schulman Auctions posts new lots of radio gear for January 2022

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Many thanks to SWLing Post contributor, Mario Filippi, who writes:

There is a lot of gear for auction from Schulman Auctions. There are several shortwave radios and other vintage gear, even crystal radios. Eye candy for radio buffs.

73’s,

Mario, N2HUN

Thank you for the tip, Mario! Click here to check out the catalog of radios up for auction.

The new Xiegu X6100: Is it a good SW/MW broadcast band receiver?

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Late last year, Xiegu started shipping their latest portable rig: the Xiegu X6100.

The X6100 is an all-in-one QRP SDR field transceiver. It sports an internal antenna tuner, internal Li-Ion rechargeable battery pack, and even an internal mic for hams who don’t want to carry the supplied mic to the field. For field operators, it’s in the very desirable “shack in a box” category. Just hook up an antenna and you’re on the air.

The X6100 got a lot of attention in the ham radio market because in many ways it resembles the Icom IC-705.

The X6100 sports top-mounted controls, a beautiful high resolution color display, and front-facing speaker. At $630 US, it’s less than half the cost of a new IC-705.

As with pretty much all modern SDR transceivers, the X6100 has variable filters and a general coverage receiver. The X6100’s receiver has gapless coverage from 0.5 MHz to 30MHz and 50MHz to 54MHz, thus covering the mediumwave and shortwave broadcast bands.

Radioddity sent me a loaner X6100 that I took delivery of on December 23, 2021.

Literally, the first thing I did was tune it to the 31 meter broadcast band.

While I’ve spent the bulk of my time with the X6100 in the field testing it as a QRP transceiver, in the shack I’ve done a fair amount of SWLing both in AM mode and (pirate radio stations) in SSB mode.

My assessment

I’ve received a number of inquiries from SWLing Post readers about the X6100 asking how it stacks up to the IC-705 from an SWL’s perspective, so I thought I’d share my impressions so far to help guide any potential purchase decisions. I’ll provide much more detail in my upcoming review in The Spectrum Monitor magazine (likely in March or April 2022).

In short: I would not buy the Xiegu X6100 specifically for shortwave broadcast listening.

While the frequency coverage is ideal, the variable filters are useful, and the color spectrum display and waterfall (in terms of the interface) are benchmark, the radio has a few cons from an SWL perspective:

  1. I have noticed imaging on the spectrum display as I tune through the broadcast bands (shortwave and mediumwave). I seriously doubt this is something that can be addressed in firmware.
  2. The X6100 does not have a robust front-end. A number of my readers on QRPer.com who live near strong broadcast stations have noted that it’s almost unusable from home.
  3. The audio is typical of Xiegu radios, meaning it’s unrefined and a bit harsh. I find it a bit fatiguing over extended listening sessions both using the internal speaker and headphones.

In fairness, the X6100 wasn’t designed with the SWL in mind.

With the negatives out of the way, the X6100 is very much a usable radio for casual broadcast listening. You might even be able to push it into a little DX action as well. If you plan to purchase the X6100 for ham radio activities anyway, consider broadcast listening as a bit of “icing on the cake.”

X6100 vs. IC-705 from an SWL’s perspective

I’ve been asked specifically about how the X6100 compares with the IC-705 in terms of shortwave and mediumwave listening.

There’s really no competition: the IC-705 is better than the X6100 by orders of magnitude in this regard.

The IC-705 is a high-performance radio with receiver qualities that would please most serious DXers. (Check out some of 13DKA’s reports!). That level of RX performance and filtering comes with a $1,300 US price tag.

The X6100 was designed to be price-competitive and to have ample performance and a tool set to please the low-power ham radio field operator. I feel like it’s a success in this regard. When I’m in the field performing a park or summit activation, I’m typically far removed from urban RFI and blowtorch broadcasters. The field operations I’ve performed so far with the X6100 (mostly in CW/Morse Code) have been quite successful and enjoyable.

I hopes this helps! Again, I’ll have more detail about the Xiegu X6100 in my upcoming detailed review in The Spectrum Monitor magazine. If you’re interested in how the X6100 performs as a QRP transceiver in the field, check out my reports on QRPer.com.

Thank you!

Looking back: What radios did you use the most in 2021?

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I’m not sure why, but near the end of the year I always like to look back at my radio routine and figure out which radios I used the most. Often, the answer is surprising.

This year, I realized there was a very clear winner…

The C.Crane CCRadio3

The C.Crane CCRadio3 has taken lead position as my daily driver. I have it turned on most days for as much as 4-5 hours at a time depending on how much I’m at home.

Here’s why it has become my daily driver:

  • Benchmark AM/FM reception: The CCRadio3 grabs a solid lock on my favorite local and regional MW and FM stations. At the end of the day, my favorite news program (Marketplace) is available on a local WCQS and distant WFAE. The CCRadio3 can lock onto both equally well. I’ve very few portables that can do this. In addition, I use the CCradio3 for casual MW DXing when I’m not using the Panny RF-2200 or my Chuck Rippel-restored SRII.
  • Audio: The audio from its internal speaker is superb for voice content, but also robust enough for music. I love the dedicated Treble/Bass controls. The audio can be turned up to the point that it can be enjoyed throughout our house.
  • Bluetooth: I listen to a lot of content online and pipe it via Bluetooth from various devices to the CCRadio3. I stream the CBC, FranceInfo, ABC, and/or the BBC most mornings from my laptop. I use Radio Garden on my iPad to explore a world of local radio. I also stream Apple Music from my Mac Mini to the CCRadio3. When I do workouts on my stationary bike, I’ll often listen to both podcasts and music on the CCRadio3 via my iPhone.
  • Battery life: The battery life on the CCRadio 3 is simply stellar. It takes four D cells which offer up a lot of capacity. There are so few digital display radios today that can quite literally play for a few months on one set of batteries. I invested in a set of EBL D Cells and Charger (this package–affiliate link) and have been super pleased. When in the shack/office, the CCRadio3 is plugged into mains power via the supplied AC adapter. All other times, it runs on rechargeable battery power.

It’s ironic, too, because the CCRadio3 doesn’t cover shortwave which is, without a doubt, my favorite band. Thing is, now that so many of my staple news sources are difficult to reliably get on shortwave in the mornings (oh how I miss Radio Australia) I turn to FM and online sources for news content. I still listen to the BBCWS, RNZ, RRI, and at least a dozen other news programs on shortwave, but due to my schedule, it’s mostly casual listening.

On the go: The Belka-DX

Speaking of shortwave, though, the portable I’ve used the most this year for SWLing has been the Belka-DX. Besides it being a super-performing DX machine, it’s also incredibly compact and portable. I keep it in a small Tom Bihn zippered pouch and it lives in my EDC bag which accompanies me on all errands and travels.

The Belka-DX is so small, I forget it’s there. Even some of my smallest compact portables are nearly three times the size of the Belka-DX.

In the field: The Icom IC-705

If you follow QRPer.com, you’ll no doubt see that I spend a lot of time in the field doing QRP amateur radio activations of summits and parks. As I’ve pointed out in my review and 13DKA has pointed out in his reviews, the IC-705 is a benchmark shortwave, mediumwave and FM DXing machine. At $1300 US it’s pricey for sure, but it offers up a usable spectrum display/waterfall, audio RX controls, customizable filtering, HF/VHF/UHF coverage, and built-in audio recording/playback.

You don’t even need a 13.8V power supply with the IC-705 as it’ll charge from most any USB source via a Micro USB plug and run in receive for at least 5 hours without needing a recharge. Of course, you could invest in a second, higher-capacity battery pack and get even more battery life.

When I take the IC-705 on a field activation, I’ll often do a little listening after I finish the ham radio portion of my outing. It’s a great reminder of how important it is to take your radios to the field these days. With no QRM, it’s amazing what you can receive.

How about you?

What radios did you use the most in 2021? Please comment!

Radio Waves: Eiffel Tower Radio 100 Years Ago, Raspberry Pi Radio Time Machine, Barrie ARC Thrives in Pandemic, and The Voice of Ganymede via JUNO

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Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Dan Srebnick, the Southgate ARC and Geneva Witherspoon for the following tips:

Signal of strength: Eiffel Tower celebrates a centenary of radio broadcast (RFI)

A hundred years ago this week, France’s most famous landmark, the Eiffel Tower, was first used as an antenna for radio programmes. Looming high above the city’s uniform skyline, the tower was an obvious choice to pioneer public radio in France, proving the country’s prowess in broadcast technology.

On 22 December 1921, just three years after the end of WWI, “Radio Tour Eiffel” broadcast its first ever show, a live performance featuring legendary singers.

The trial was the beginning of a long series of broadcasts that continues today, with 45 television stations and 32 FM stations – including RFI – broadcasting from the Eiffel Tower.

According to the Lille-based publication Le Réveil du Nord of 24 December 2021, “a concert by wireless telephony took place at the Lille Theatre”.

Famous artists of that era, the legendary Sacha Guitry, the soprano Jeanne Hatto, the tenor Maurice Dutreix and others sang in a microphone in a room in the Eiffel Tower, from where it was broadcast to a “wireless phone set” in the hall of the Lille theatre.

“A large audience attended this session,” according to the dispatch. [Continue reading…]

Nostalgic Raspberry Pi Radio Tunes to Music From Past Decades (Tom’s Hardware)

The Raspberry Pi makes an excellent gift on its own, but getting one in a custom Time Machine Radio is remarkably fulfilling. This holiday, a maker known as Byte-rider created a custom Raspberry Pi Zero 2 W-powered radio for his father. Continue reading →

New Reuter Elektronik RDR52 QRP general coverage transceiver

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Many thanks to SWLing Post contributor, Dave Zantow, who notes that Reuter Elektronik recently introduced their latest radio: the RDR52 QRP Transceiver.

Here’s the announcement from the Reuter Elektronik website:

RDR52 in standard “black” and special “metal”

The RDR52 can basically be seen as a desktop version of the popular Reuter Pocket mobile device. Astonishingly, the Pocket is often used as a full-fledged desktop receiver. Many operators report that they have sold their “large” devices and now only use the Pocket because it pairs good reception properties with simple operation and offers a very effective spectrum display while keeping the power consumption to a minimum.

However, the battery-powered Pocket was never designed for that purpose. First, it needs a stand-up aid to be easy to operate on your desktop (display almost vertical). Second, the playback volume of the loudspeakers is low and turning the scroll wheel feels finicky. Third, operation on a constant charging current supply is suboptimal for the built-in batteries: Constant full charging shortens their service life.

The RDR52 avoids these disadvantages. It essentially contains the circuit and thus the display and reception properties as well as the operating options of the Pocket. Due to the larger housing (heat dissipation) and a slightly higher possible current consumption (no batteries as power supply), improvements in the IM behavior (more powerful preamplifiers and AD converters) could be achieved. Other differences to the Pocket include:

    • Aluminum profile housing 190 x 90 x 100 mm³ with 5 mm thick front and 2 mm thick rear panel, powder-coated / anodized.
    • BNC sockets for antenna connection, separate for 0 – 71 MHz, FM / 2m / DAB and exciter / QRP transmitter.
    • Large rotary knob with solid optical rotary encoder.
    • Additional rotary knob for volume adjustment of headphones and loudspeakers.
    • Two 32 mm loudspeakers with good bass reproduction.
    • External power supply DC voltage 9 – 15 V (common hollow pin socket with 2.5 mm pin).

All the Pocket’s enhancements are also available for the RDR52 (broadband spectrum with up to 52.6 MHz display width, 8 different FM filters for extreme DX to high-end stereo, up to 16 GBit flash memory for audio or I/Q recordings, screen dump of the display to the recorder, WiFi, Bluetooth, power supply and control of the RLA4 / RFA1 directly from the antenna input, …). Two basic hardware versions will be available: Standard black with simple loudspeakers and plastic knobs, or a special version with metal knobs and aluminum loudspeaker membranes.

The equipment of different transmitter modules and frequency ranges has been a bit expanded in contrast to the Pocket. Two modules can be installed in the RDR52 at the same time (Pocket: only 1 module). This means, for example, that the FM module and the SW QRP transmitter can be installed at the same time, or the broadband exciter can be installed without the need for an FM module. However, equipping both transmitter modules (exciter and QRP transmitter at the same time) is not possible.

The RDR52 is in production and is expected to be available from the end of December 2021. Prices according to the current price list.

Based on the price list, it appears the RDR52 will start at € 999 with a number of optional upgrades/configurations.

Click here for more information.

Thank you for the tip, Dave!