Tag Archives: Dan Robinson

Dan compares the Chameleon CHA RXL to the Wellbrook and W6LVP Loops

Many thanks to SWLing Post contributor, Dan Robinson, for the following guest post and review:


Chameleon CHA-RXL:  Is This Pro-level Loop A Worthy Competitor To Wellbrook and W6LVP?

by Dan Robinson

At the end of summer 2021, I took up an offer from Chameleon to test and review their CHA – RXL loop antenna.  The company describes this as a “new design high-performance” LF, MF, and HF receive-only loop perfect for mobile RV and apartment situations and with low noise characteristics.

This is not a cheap antenna, like the Chinese-made MLA-30, but a heavy duty professionally-built unit designed to, as the old TIMEX watch commercial said, “take a licking and keep on ticking”.

Price for the CHA RXL is around $500, though the company dropped the price at to $382 – but only for the two section loop rather than the single piece antenna advertised on its site.

You can see the Chameleon on the company’s website here, but it’s also sold by Gigaparts, DX Engineering and other radio suppliers.  Chameleon lists features as:

Highly directional, balanced input preamplifier to eliminate environmental noise and ground loops, receives on new 2200m and 630m ham bands, flexible mounting and power options, and a stealthy [36 inch] Navy gray loop [that] fades into the background sky.

The built-in preamplifier, says Chameleon, “will enable clearer reception than many large horizontal wire or vertical antennas.”  Weight of the amplifier is given as 7 lbs.  The large pre-amp box is made of heavy metal, with a rubber gasket seal. Continue reading

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Dan spots “an ultra rare” JRC NRD-302A at auction on Buyee

Many thanks to SWLing Post contributor, Dan Robinson, who writes:

The seemingly un-ending stream of classic premium receivers continues at the Japan auction site known as “Buyee”:

This ultra-rare Japan Radio Company NRD-302A is expected to exceed the U.S. $5,000 mark.

As premium receiver collectors/users know, the 302A is certainly among the top rarest of the JRC professional/marine line. At the top of that line was the NRD-630, which was described by the company at the time it was being manufactured, as a “training” receiver. For some reason, though more of them were manufactured by JRC, the 302A is even more infrequently seen on the used market.

Listed as “typically unavailable” on Page 347 of the Osterman Receivers Past and Present guide, the 302A exceeds the previous 301A model in having ISB mode and a narrow 0.5 filter, with 1 Hertz tuning resolution. Previous other ultra-rare JRC sets on the Japan site included two NRD-95 receivers, both of which came in at over $5,000 U.S.

Click here to check out this auction.

What a beautiful radio!  Thanks for sharing this insight with us, Dan. Very curious what this ultra rare rig will fetch!

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Dan reviews the CountyComm GP7/SSB (Gen 4)

Many thanks to SWLing Post contributor, Dan Robinson, for the following guest post and review:


CountyComm GP7 / Tecsun PL-368:  Is It All You Need?

by Dan Robinson

It’s been a long wait, but CountyComm, that supplier of all kinds of neat and useful stuff, finally released the GP7 SSB (Gen 4).

As the name states this is the 4th generation of the series of radios adapted by the company from the Tecsun PL-36xxx series of receivers (there was at one point a GP6 that was a never-released special project).

All photos by CountyComm

This walkie-talkie style, though receive-only, portable has undoubtedly been a big seller for CountyComm since the first model came out.  It’s popular not only with SWLs and amateur operators but also with preppers.

When OEM Tecsun finally did what everyone was clamoring for – redesign the radio with a keypad and including features associated with the PL-880/330/990x/501x receivers – the ground shook. Continue reading

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Re-Visiting Calibration on Tecsun Receivers

Many thanks to SWLing Post contributor, Dan Robinson, for the following guest post and review:


Re-Visiting Calibration on Tecsun Receivers

Dan Robinson

As owners of the latest Tecsun receivers should know by now, the PL-990x, H-501x and the new PL-368 (also sold by CountyComm as the GP7/SSB) provide the user with the ability to re-calibrate.

I wrote about this in my past reviews of these receivers.  With the PL-368, the addition of re-calibration combines with a new keypad to make this receiver even more attractive as a prepper type radio.

Recently, an exchange with Gilles Letorneau who runs the OfficialSWLChannel on You Tube and viewing one of his videos brought to my attention a variation in the method I had been using.

Since the 990x, 501x and more recently the 368 came out, I had been following this method:

Receive a clear and audible strong station in shortwave, then switch to USB and LSB.   If adjustment is needed, hold down USB or LSB until a double display flash.  Hit the STEP button once and then quickly again to move the display down arrow so it’s above the far right digit.  Then fine tune for zero beat.  Hold LSB or USB in for a couple of seconds until the LCD blinks again.

At one point, Tecsun engineers had cautioned against using re-calibration and apparently had de-activated it in the PL-330 and PL-368, worrying that using the feature might result in unwanted complications for some users.  But it was later restored.

My exchanges with Gilles alerted me to the fact that the additional step of first holding down USB or LSB for a double display flash, depending on which is being re-calibrated, is not actually necessary.

I owe Gilles a beer on my next visit to Montreal.

Of course, switching to SSB does not automatically place the receiver in fine tune mode, which is still necessary, so after entering USB or LSB you still have to move the fine tuning cursor to the right with two presses of the STEP button.  But it’s not necessary to long press USB or LSB first to achieve a first double flash

As I stated in my reviews, re-calibration doesn’t mean the receiver is then permanently zeroed up and down the shortwave bands.  You will have to repeat the process from, say 25 meters, to 19 meters, to 49 meters, etc.

Revisiting the re-calibration issue on the Tecsun PL-368, and now on a sample of the CountyComm GP7/SSB has underscored a couple of other issues on these handy walkie-talkie style receivers.  I will have more on this in an upcoming review of the CountyComm version of the PL-368.

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Radio Waves: Radio Facsimile from the 1930s, Public Radio Saving Print, Unlicensed Experimental LW Radio, and RIP Tony Middleton & Milburn Butler

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!


A Look Back at the Radio Newspaper of the Air (Radio World)

Radio facsimile technology never fully caught on, but what if it had?

In the beginning, there were newspapers.

And then radio arrived, challenging the newspapers’ journalistic monopoly.

At first, many newspapers fought the new competitor, refusing to print radio news or program schedules. But some went in the opposite direction, deciding to operate their own radio stations to augment their businesses. And finally, a few brave pioneering publications went even farther: They tried to deliver their newspapers via radio facsimile.

In the early 1930s, radio facsimile looked like the dream application for newspapers. They could use their own local radio stations to deliver newspapers directly to consumers during overnight hours. It would eliminate the cost of printing and distribution and shift those costs onto consumers, who would provide their own printers and paper.

This led several radio stations and newspapers to experiment with facsimile transmission during the late 1930s.

THE FINCH SYSTEM

The person most responsible for this technology was William G. H. Finch. He worked for the International News Service and set up their first teletype circuits between New York, Chicago and Havana. He became interested in facsimile machines and eventually amassed hundreds of patents. [Continue reading the full article…]

How public radio is trying to save print (The Verge)

Why Chicago Public Media and the Chicago Sun-Times are exploring a merger

The Chicago Sun-Times needs help. After being bought and sold several times over the last decade, the 73-year-old paper is looking for a more stable home to continue its award-winning reporting — and it may have finally found it in an unexpected place: a radio station.

Chicago Public Media, which owns the radio station WBEZ, is currently in talks with the Sun-Times to merge. A final deal would combine their newsrooms and audiences in hopes of creating a financially stable enterprise for both teams. Similar mergers and acquisitions have become a common way to bolster the struggling print industry, but if radio were to take on a major newspaper, that would be a first.

“Audio is a growth business,” says Jim Friedlich, chief executive of The Lenfest Institute for Journalism, who advised CPM on the potential merger. “Now Chicago Public Media and other media with audio roots have both the wherewithal and the self-confidence to take a bold step like this.”

Since 2004, US newspapers have shut down at a rate of 100 per year, a pace that’s only accelerated since the start of the pandemic. To stay afloat, some smaller newsrooms have given up independence, being bought by news conglomerates or becoming joint entities with other local outlets — and public radio and TV stations have increasingly offered themselves up as partners. New York Public Radio acquiring the website Gothamist was one of nine similar deals in recent years, triggering researchers to document the trend by creating the Public Media Mergers Project. Public radio has been a particularly strong force, holding its ground amid digitization and the podcasting craze (partially because it’s participated in it), and it might be strong enough to help print do the same thing. [Continue reading…]

The low-down on long-wave: Unlicensed experimental radio (Hackaday via the Southgate ARC)

In the 125 years since Marconi made his first radio transmissions, the spectrum has been divvied up into ranges and bands, most of which are reserved for governments and large telecom companies. Amidst all of the corporate greed, the ‘little guys managed to carve out their own small corner of the spectrum, with the help of organizations like the American Radio Relay League (ARRL).

Since 1914, the ARRL has represented the interests of us amateur radio enthusiasts and helped to protect the bands set aside for amateur use. To actually take advantage of the wonderful opportunity to transmit on these bands, you need a license, issued by the FCC. The licenses really aren’t hard to get, and you should get one, but what if you don’t feel like taking a test? Or if you’re just too impatient?

Well, fear not because there’s some space on the radio spectrum for you, too.

Welcome to the wonderful world of (legal!) unlicensed radio experimentation, where anything goes. Okay, not anything but the possibilities are wide open. There are a few experimental radio bands, known as LowFER, MedFER, and HiFER where anyone is welcome to play around. And of the three, LowFER seems the most promising.

LowFER, as the name would suggest, contains the lowest frequency range of the three, falling between 160 kHz and 190 kHz, with a whopping wavelength of around one mile. Also known as the 1750-meter band, this frequency range is well-suited for long transmission paths through ground wave propagation, a mode in which the radio signals move across the surface of the earth. This can easily carry even low-power signals hundreds of miles, and occasionally through some atmospheric black magic, signals have been known to travel thousands of miles. These ground wave signals also travel well across bodies of water, especially salt water.

Read the full Hackaday item at:
https://hackaday.com/2021/10/19/the-low-down-on-long-wave-unlicensed-experimental-radio/

RAE bids farewell to its historic English voice, Tony Middleton (RAE)

We regret to inform our listeners that our colleague Juan Antonio “Tony” Middleton passed away in Buenos Aires due to health complications, at the age of 82. His distinctive British accent is part of the history of RAE, where he hosted the English-language program for almost three decades. English-speaking listeners around the world remember his warmth and clarity on the air, not to mention his classic opening line: “This is the international service of the Argentine Radio”.

Born in Argentina and son of British immigrants, he ventured into acting in the English language with the group “Suburban Players”, while he was engaged in various commercial activities with his family. In 1981 he had the opportunity to join RAE as a substitute, thanks to his impeccable English and his pleasant voice. In 1983 he joined as a regular and went on to become head of the English-language department at the station, until his retirement in 2008. [Continue reading…]

Milburn Garland Butler Dec 1, 1935 – Oct 10, 2021 (Dignity Memorial)

Mlburn Garland “Gil” Butler was born December 1, 1935 in Bradenton, Florida. He attended local schools, where his mother was a teacher. He grew up in a community where electrification was still being developed, where the Saturday morning movies were an all-day entertainment for kids, and where families would gather in the town square on Sundays for band music and ice cream. After a brief stint in the Army (serving as a quartermaster at a base near Washington, D.C.), Gil Butler went to college in Colorado, returning to Florida where he graduated from the University of Florida with a degree in radio engineering. Along the way, he met and after a whirlwind courtship married Judith Bunten, who would become his lifelong companion. Gil Butler began working as a DJ at a small radio station in Bradenton, Florida in the early 1950s, spinning disks from the very beginning of Rock and Roll. His love of music of all sorts, from Jazz to Rock to Classical, his collection evolved through several formats (LP, cassette, CD, and MPs), and his special chair was always surrounded by the music he would enjoy while reading in the evening. Professionally, Gil moved up to larger stations and more challenging positions in radio and television; working for radio stations around the Tampa Bay area. His first TV gig was as a general reporter for WTVT in Tampa. From there, he moved to WXYZ in Detroit, Michigan, before moving to Silver Spring in the Washington D.C. where he worked as a White House Correspondent for local CBS affiliate, WTOP, covering Washington politics under presidents Nixon and Ford. During this period, Gil appears briefly in Timothy Crouse’s The Boys on the Bus (a recounting of the White House Press Corps during the Nixon Era). He was one of the six “Knights of the Green Ottoman,” named for an item of furniture in the 1972 White House press complex, where the newsmen would gather and share notes. In one passage, he is described: “Gil Butler… the reporter for TV station WTOP, who was chuckling over a volume of Mencken…” This description will surprise no one who knew him, as Gil was a voracious reader. He was always in the middle of a massive nonfiction volume about politics, military history or the Space Race. After WTOP, in 1978, Gil began his ultimate career at the Voice of America, the United States Information Agency’s international radio network. Over a nearly three decade career with Voice of America, he covered 68 countries, working abroad in Cairo, Egypt, Beiruit Lebanon, Beijing, China, London, England, as well as covering the State Department and Pentagon during his time at home between foreign assignments. At the Voice of America’s 40th Anniversary Celebration, Gil received the Meritorious Honor Award for his work in Cairo covering the assassination and funeral of Egyptian President Sadat and its aftermath. Twenty-seven years later, Voice of America News ran a story looking back at that work and the restraint and integrity he exercised in waiting for confirmation before reporting that Sadat had been killed. [Continue reading…]


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GRAHN Spezialantennen currently closed

Many thanks to SWLing Post contributor, Dan Robinson, who notes that Grahn Spezialantennen is currently closed due to the fact that Mr. Grahn is undergoing extended medical treatment.

Dan received this message from Christine Grahn who did not indicate if/when the business might re-open. We certainly wish him all of the best in recovery.

Click here to view the Grahn Spezialantennen website.

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Rare 1968 Radio Dzaoudzi QSL card fetches $158 at auction

Many thanks to SWLing Post contributor, Dan Robinson, who writes:

In recent years, a number of records have been set for QSL cards from former shortwave stations around the world. The latest example shows that there is still strong collector demand for one of the rarest stations on the air from Africa, Comoros Islands.

In this eBay auction, a classic photo QSL from the station at Moroni went for $158. That’s in the high end for QSL auctions — there have been higher, for example for QSLs from the former AFAN station at McMurdo, Antarctica, and for some other African and Asian cards.

This card shows the 90 meter band shortwave frequency for the station, 3,331 kHz which as veteran DX’ers who are still around recall could be heard with great difficulty from 0300 UTC when the station signed on for morning programming. The other frequency of 7,260 kHz was also heard, though the 90 meter frequency was the easiest for U.S. DX’ers.

– Dan Robinson

Wow! Thank you so much for sharing your insight, Dan. What a fascinating find!

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