Category Archives: FM

Radio Waves: The Future of On-Air DJs, SDR Comparison, Radios That Never Were, and an Internet Radio Player for Linux

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 Jack Kratoville, Dave Zantow, and Dennis Dura for the following tips:


Live From Everywhere? The American Radio DJ In An On-Demand World (1A)

iHeartMedia owns and operates 858 broadcast radio stations, serving more than 150 markets throughout the U.S. The company reaches over a quarter billion monthly listeners ?in America.

In January, news hit that iHeartMedia was reassessing its ability to adapt to the modern music industry. The company said that it plans to make “significant investments … in technology and artificial intelligence.”

However, its on-air DJs were caught off guard when they found out that the company’s restructuring plan didn’t include them.

Streaming platforms has ushered in the digital age of music where each person make their own playlists. What does that mean for the future of the on-air DJ in the United States?

Click here to listen to the audio.

A comprehensive lab comparison between multiple software defined radios (RTL-SDR.com)

Librespace, who are the people behind the open hardware/source SatNOGS satellite ground station project have recently released a comprehensive paper (pdf) that compares multiple software defined radios available on the market in a realistic laboratory based signal environment. The testing was performed by Alexandru Csete (@csete) who is the programmer behind GQRX and Gpredict and Sheila Christiansen (@astro_sheila) who is a Space Systems Engineer at Alexandru’s company AC Satcom. Their goal was to evaluate multiple SDRs for use in SatNOGS ground stations and other satellite receiving applications.

The SDRs tested include the RTL-SDR Blog V3, Airspy Mini, SDRplay RSPduo, LimeSDR Mini, BladeRF 2.0 Micro, Ettus USRP B210 and the PlutoSDR. In their tests they measure the noise figure, dynamic range, RX/TX spectral purity, TX power output and transmitter modulation error ratio of each SDR in various satellite bands from VHF to C-band.

The paper is an excellent read, however the results are summarized below. In terms of noise figure, the SDRplay RSPduo with it’s built in LNA performed the best, with all other SDRs apart from the LimeSDR being similar. The LimeSDR had the worst noise figure by a large margin.[]

Radios that Never Were (N9EWO)

Dave Zantow (N9EWO) shares a new page on his website devoted to receivers and amateur transceivers that never quite made it to the marketplace. []

Shortwave: A Modern Internet Radio Player for Linux (It’s Floss)

Brief: Shortwave is a modern looking open source Internet Radio player for Linux desktop. We take a quick look at it after its recent stable release.

Shortwave is an interesting open-source radio player that offers a good-looking user interface along with a great experience listening to the Internet stations. It utilizes a community-powered database for the Internet stations it lists.

Shortwave is actually a successor of the popular radio app for Linux, Gradio. Its developer Felix joined GNOME and discontinued Gradio to create Shortwave from scratch in Rust programming language. If you were using Gradio as your preferred Internet radio station player, you can import the library as well.

Recently, Shortwave released its first stable version and seems to push new updates after that as well.[]


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!

Spread the radio love

Radio Waves: ACMA Report, Maine Stations Close, The National Emergency Library, and RAF Bombing Disrupted Propaganda

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’sRadio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Alan, Bill Mead, Bill Hemphill, and Gregg Freeby for the following tips:


The future delivery of radio (Australia Communications and Media Authority)

The ACMA released an issue paper in May 2019 to hear from industry about the delivery of radio.  We also wanted to consider if there needs to be any changes to support radio services into the future.

Following this, we conducted a public consultation, receiving submissions from across the industry. We found that live radio across different platforms is important to Australians. This is especially relevant during emergency situations, such as the recent bushfires. We also determined that a mix of platforms is crucial to bringing radio to listeners.

Our report identifies four broadcast spectrum planning priority activities to help support radio:

    • converting commercial, community and national radio broadcasting services from AM to FM where available
    • improving the coverage of radio broadcasting services where spectrum is readily available
    • making digital radio channel plans for regional DAB+ where there is a planned rollout
    • supporting trials of new broadcasting technology.

Report to the Minister Future delivery of radio (319.59 KB)

WOXO says farewell to listeners; Gleason Radio Group to go silent after 45 years (Sun Journal)

AUBURN — On Maine Big Z’s “The Breakfast Club,” Mark Turcotte interviewed local business owners, entertainers, activists, and once last summer, a mixed martial arts cage fighter and state senator one hour apart.

“Had to shift gears pretty quickly that morning,” quipped Turcotte, the morning show host since December 2018.

On Wednesday, he was abruptly down to two final shows.

Gleason Radio Group announced that its five stations will go off the air at 7 p.m. Sunday. They include Norway, Paris, Rumford, Mexico and Auburn.

“This feels like the end of an era in Maine radio,” Turcotte said.

Kathy Gleason has run the business with WOXO station manager Vic Hodgkins in the year since her husband, founder and former Auburn Mayor Dick Gleason, died.

“I feel that I tried very hard to keep it going and at the same time have it be for sale,” Gleason said. “It didn’t sell, it may sell. The coronavirus was kind of like the last straw as far as finances go.”

Hodgkins said a combination of low receivables and slow payments, combined with a projected drop in advertising because of COVID-19, has resulted in the need to close the stations.[]

Announcing The National Emergency Library (Internet Archive)

To address our unprecedented global and immediate need for access to reading and research materials, as of today, March 24, 2020, the Internet Archive will suspend waitlists for the 1.4 million (and growing) books in our lending library by creating a National Emergency Library to serve the nation’s displaced learners. This suspension will run through June 30, 2020, or the end of the US national emergency, whichever is later.

During the waitlist suspension, users will be able to borrow books from the National Emergency Library without joining a waitlist, ensuring that students will have access to assigned readings and library materials that the Internet Archive has digitized for the remainder of the US academic calendar, and that people who cannot physically access their local libraries because of closure or self-quarantine can continue to read and thrive during this time of crisis, keeping themselves and others safe.

This library brings together all the books from Phillips Academy Andover and Marygrove College, and much of Trent University’s collections, along with over a million other books donated from other libraries to readers worldwide that are locked out of their libraries.

This is a response to the scores of inquiries from educators about the capacity of our lending system and the scale needed to meet classroom demands because of the closures. Working with librarians in Boston area, led by Tom Blake of Boston Public Library, who gathered course reserves and reading lists from college and school libraries, we determined which of those books the Internet Archive had already digitized.  Through that work we quickly realized that our lending library wasn’t going to scale to meet the needs of a global community of displaced learners. To make a real difference for the nation and the world, we would have to take a bigger step.[]

World War II’s Strangest Bombing Mission (Air & Space)

The RAF knew how to cut the power on propaganda.

eichsmarschall Hermann Göring was beside himself with anger. Years before, he had told the people of Germany that no enemy aircraft would ever cross the country’s borders. Now, on January 30, 1943, a national day of celebration marking the 10th anniversary of Hitler’s rise to power, Göring was made to look like a buffoon.

Dodging in and out of slate gray clouds, Royal Air Force bombers from No. 105 Squadron howled across Berlin. With bomb doors open and Merlin engines at their limits, the wail from a trio of de Havilland Mosquitos mixed with blasts from anti-aircraft batteries below. If everything went as planned, all that noise was going to be on the radio.

In Berlin, amid the grim news from the battlefronts in North Africa and Stalingrad, the January 30 celebration was intended to take German minds off their fallen soldiers and reversals of fortune. The Nazis were going to have a parade. Göring, one of the most powerful figures in the National Socialist German Workers’ Party, was about to deliver a speech to kick off the opening ceremonies in the capital city. British operatives knew it all. They even found out what time the Luftwaffe commandant was due to step to the podium at the Air Ministry Building—exactly 1100.

Royal Air Force leaders had dispatched orders to a pair of Mosquito squadrons experienced in low-level attacks. “I was playing [cards] in the crew room when my driver first told me we were going on an op,” Sergeant Richard Charles “Lofty” Fletcher later told reporters. “I must admit I was a bit shattered when I found out it was Berlin.”

The 400-mph Mosquitos were undertaking the RAF’s first daylight bombing attack on Germany’s largest city. Their target was not the parade route or even the Reichsmarschall himself, but something bigger. It didn’t take a top-level English spy to figure out that Göring’s remarks would be transmitted to the far corners of the Third Reich. The bombers banked and streaked towards Berlin’s Haus des Rundfunks—the headquarters building of the German State broadcasting company.

Göring and the radio building were slightly more than four miles apart—a distance that the Mosquitos could cover, going all-out, in roughly 40 seconds. And the cacophony they brought with them traveled even faster. As the mics went live and Göring began to speak, the roar of impending catastrophe became audible over the 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!

Spread the radio love

Radio Waves: Digitizing Pakistan, BBC MW Closures, Lowe HF-250 Review, and BBC News suspends 450 job cuts

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’sRadio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Alan, Mike, and Dave Zantow for the following tips:


Government to fully digitize Radio Pakistan (Radio Pakistan)

The incumbent government, under its vision of introducing modern trends and technology in different sectors, has planned to fully digitize the state-owned Radio Pakistan.

This information has been revealed in official documents during the ongoing week-long national workshop on Digital Radio Migration policy of Radio Pakistan at Pakistan Broadcasting Academy, Islamabad.

The digitization will bring about a revolution in the field of broadcasting in the country, and will capture the audience at home and abroad including South Asia and Central Asia and the Middle East through quality news, current affairs and programs.

Under the plan, the biggest 1000-Kilowatt DRM Medium-wave transmitting station of Radio Pakistan will be set up at Fort Monroe hill station in Dera Ghazi Khan district in South Punjab at an estimated cost of three billion rupees.

It will be the first ever most powerful but digital transmitter of Radio Pakistan that is to be established in center of the country as part of Phase-II of Digital Radio Migration policy and it will help cover the entire population of Pakistan with crystal clear and noise-free waves.

The project has already been approved by the federal cabinet while the Punjab government has been asked to acquire land for the said purpose.

Under Phase-II of DRM plan, five DRM+FM transmitters of 10-kilowatt each will be installed in Islamabad, Lahore, Karachi, Faisalabad and Multan in the existing Radio Stations.

Besides, eight DRM+FM transmitters of five kilowatt each will be installed in Quetta, Peshawar, Gilgit, Skardu, Gwadar, Mirpur (Azad Kashmir), Khairpur and Narowal in the existing radio stations.

The phase-II of the plan would be accomplished in three years with an overall estimated cost of 3,153 million rupees.

And under Phase-III of the plan, four DRM medium wave transmitters of 100-kilowatt each will be installed in Lahore, Skardu, Quetta and Peshawar for strategic purposes.[]

BBC Radio to close more medium wave transmitters (Radio Today)

The BBC says it is closing a further 18 medium wave transmitters across England, Scotland and Wales in the next stage of its plan to cut costs.

Services being closed range from BBC Radio Solent’s two AM frequencies on the South Coast to BBC Radio Scotland’s service in Aberdeen.

Six more BBC Local Radio services will no longer be transmitted on AM – they are Three Counties Radio (630 and 1161 kHz), BBC Radio Merseyside (1485 KHz), BBC Radio Newcastle (1458 KHz), BBC Radio Solent and BBC Radio Solent (for Dorset) 999 and 1359 KHz, BBC Radio Cornwall (630 and 657 kHz) and BBC Radio York (666 and 1260 KHz).

Kieran Clifton, Director, BBC Distribution & Business Development explains: “The majority of radio listening in the UK – including to the BBC – is now digital, and digital listening is continuing to grow.

“This change was planned as long ago as 2011, but we have taken a measured approach to implement it to ensure that as many of you as possible have already moved on to other ways of receiving the services before we make this change. We know that the changes will impact some of you, and that’s why we’re speaking about the plans again now. We want to make sure that people listening to these transmissions will be able to use other methods to hear the same programmes.”[]

Dave’s review of the Lowe HF-250 (N9EWO)

[…]As far as audio quality goes, it’s extremely difficult to beat the Lowe HF-250. Mind you it has it’s share of “bug-a-boos” as well.

In our view it has held up much better in it’s old age vs. the AOR AR7030. Properly operating and in decent condition samples are fairly rare on the used market now (even more so in North America). Most owners know what the receiver is and hang on to them. But once a great while one does show up on the used market. Click here to read the full review.

BBC News suspends 450 job cuts to ensure Covid-19 coverage (BBC News)

BBC News has suspended plans to cut 450 jobs as it faces the demands of covering the coronavirus pandemic.

The job losses were announced in January and were part of a plan to complete a £80m savings target by 2022.

Outlets due to be hit include BBC Two’s Newsnight, BBC Radio 5 Live and the World Service’s World Update programme.

Director general Tony Hall gave staff the news on Wednesday, a week after the broadcaster delayed the end of the free TV licence scheme for all over-75s.

Lord Hall said “we’re suspending the consultation on those saving plans”.

He told staff: “We’ve got to get on with doing the job that you’re doing really brilliantly.

“It would be inappropriate. We haven’t got the resource to plough ahead with those plans at the moment, so we’ll come back to that at some point.

“But for the moment we just want to make sure you are supported and you’ve got the resources to do the job that you and your colleagues are doing amazingly.”[]


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!

Spread the radio love

Radio Waves: Keeping Car Radios, Moon Bounce, Voyager 2, and ABC Delays Plan

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’sRadio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to SWLing Post contributors Benn, Tony, and Michael Bird for the following tips:

Opinion: Automakers, don’t remove radios from the dashboard (The Detroit News)

Make no mistake about it: The renaissance of electric vehicle manufacturing has been one of the most significant blessings of innovation in the 21st century. The continued production and voluntary adoption of electric vehicles have made the United States a greener and cleaner nation. However, while EV makers continue working to bring the U.S. forward environmentally, they need to ensure their design methods do not have a negative impact on one of the country’s most crucial national security apparatuses.

As the former administrator of the Federal Emergency Management Agency (FEMA) that oversaw the operations of over 220 declared disasters, I am concerned about what I’ve seen from automakers removing AM radios from vehicles — an action that will make Americans less safe in emergency situations.

Interference between the broadcast reception and the electric motors of certain cars, principally electric vehicles, is the reasoning behind some companies’ decision to eliminate the radio from car dashboards. However, scrapping radio rather than making the signals compatible can severely harm the federal government’s disaster relief efforts.

Federal law mandates that FEMA always possess the capabilities to deliver messages to the American people. To this end, FEMA has spent tens of million dollars and counting perfecting the Primary Entry Point (PEP) stations — consisting mostly of AM stations, but some FM ones as well — that connect to The National Public Warning System.[]

Australia’s first ever moon bounce remembered as a feat that shocked industry experts (ABC News)

You probably haven’t heard of Ray Naughton’s feat of science — not many people have. But 55 years ago, the quiet electronics store owner from Birchip, in western Victoria, successfully completed Australia’s first ever moon bounce.

The amateur radio fanatic had spent most of his time alone in a paddock, tinkering away on a 250-metre wide, 30-metre tall antenna capable of bouncing a radio signal off the moon and back again.

Mr Naughton was driven by news that astronauts would soon be walking across its surface.

When that day came, on July 20 1969, Mr Naughton used his antenna to tune into conversations between astronauts and NASA.

A small group of locals watched on in wonder, realising for the first time what their private neighbour had been working on.[]

When Voyager 2 Calls Home, Earth Soon Won’t Be Able to Answer (NY Times)

NASA will spend 11 months upgrading the only piece of its Deep Space Network that can send commands to the probe, which has crossed into interstellar space.

Voyager 2 has been traveling through space for 43 years, and is now 13 billion miles from Earth. But every so often, something goes wrong.

At the end of January, for instance, the robotic probe executed a routine somersault to beam scientific data back to Earth when an error triggered a shutdown of some of its functions.

“Everybody was extremely worried about recovering the spacecraft,” said Suzanne Dodd, who is the Voyager project manager at NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

The mission’s managers on our planet know what to do when such a fault occurs. Although it takes about a day and a half to talk to Voyager 2 at its current distance, they sent commands to restore its normal operations.

But starting on Monday for the next 11 months, they won’t be able to get word to the spry spacecraft in case something again goes wrong (although the probe can still stream data back to Earth). Upgrades and repairs are prompting NASA to take offline a key piece of space age equipment used to beam messages all around the solar system.[]

ABC forced to delay five-year plan and job cuts announcement (The Age)

The ABC has been forced to delay the release of its five-year blueprint – including job cuts – to prioritise its response to the coronavirus pandemic.

The national broadcaster was due to announce its long-term plan at the end of this month. A three-year funding freeze that took effect last July, stripping $84 million from ABC’s budget, will result in an estimated 200 redundancies.

In an email to staff, managing director David Anderson said, “I think you will agree with me when I say that the current situation with COVID-19 means our focus must be on the welfare of all of you and our role as a public broadcaster in providing the community with timely and credible information in this challenging time for our country.

“For this reason, I’m sure you will understand my decision to postpone the announcement until we are through this period … your patience and professionalism are, as always, greatly appreciated.”

Anderson told employees he would reveal his plan “as soon as we have returned to normal levels of activity”.[]


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!

Spread the radio love

John’s “illicit friend from the good old days”

At the 1-watt setting (13.8V, 470mA DC in) The labels are Photoshopped here for illustration, ie they’re not on the actual case (Source: AE5X)

Many thanks to SWLing Post contributor, John (AE5X), who recently shared a link to the following story on his excellent radio blog:

[…]It was the late 1990’s in Montclair NJ. A friend played guitar in a local band and wanted to get some air time for a few of their original songs. He knew his chances of getting his tunes played on a commercial FM station hovered somewhere between zero and none. And – this is key – he’d seen Pump Up The Volume and knew that I knew a “bit about radios”.

My friend – I’ll call him “Don” since that was (and still is) his name – wondered if there was some way he could be outfitted with a radio similar to that in Pump Up The Volume, and, if so, what would his range be. I told him that a lot depends on the antenna’s location.

Funny thing about Don: besides being in a rock & roll band, he was also a caretaker for a Montclair church. A church with a very tall belltower. A belltower that he had access to. Do you see where this is going? Furthermore, Don and his wife lived on church property as part of his caretaker responsibilities.[…]

Click here to read the full story at AE5X’s blog.

What a divine alignment, John! 🙂 Fantastic story and, I’m sure, one that resonates with many here in the SWLing Post community.  Perhaps readers will comment with details  about their own “illicit” friends and radio escapades!

Spread the radio love

Radio Red Zone: A Coronavirus station in quarantined Italy

(Source: Aljazeera)

Radio Red Zone broadcasts from a town under quarantine and brings listeners useful health advice and sense of community.

Codogno, Italy – As the coronavirus grips Italy and stringent measures are taken to slow the spread of the infection, a local radio station is providing citizens with a sense of normality amid a quarantine.

The station broadcasts from Codogno, a town now known as the “Wuhan of Italy” under lockdown. Trains do not stop there, and the streets are empty.

“Good morning, Codogno!” says 82-year-old presenter Pino Pagani, starting his live broadcast from inside Lombardy’s red-zone area, where about 50,000 people have been under quarantine for almost two weeks.

Pagani then reads an inspirational message sent in from listener Diego Lazzanoni, an Italian living in Castiglione d’Adda town:

“We are here in our homes to fight with our childhood friends and families. Although we are on our knees right now, I feel the silent vicinity of my town. Even if the streets are empty, and no sound is to be heard, I know that when this nightmare is over, we will be partying as we alone know how. We don’t and won’t give up.”[…]

Click here to read the full article.

Spread the radio love

A Look Back: Memories of the Panasonic RF-2200 and its sibling, the National Panasonic DR22

Many thanks to SWLing Post contributor, Mario Filippi (N2HUN), for the following guest post:


A Look Back: Memories of the Panasonic RF-2200 and its Sibling, the National Panasonic DR22

by Mario Filippi, N2HUN

All photos by author unless otherwise noted

One of the preeminent AM/FM/SW portables of all time is the venerable Panasonic model RF-2200 receiver that was sold in the USA starting in the mid-1970’s for around $165.00 US.

Weighing in at a hefty 7 pounds, 13 ounces and vital statistics of 12” x 7” x 4” it came equipped with a robust shoulder strap to schlep from the radio shack to alfresco listening sites and was basically a completely self-contained entertainment center for the radio enthusiast.  My first RF-2200 was purchased in the late ‘70’s from Grand Central Radio Shop in New York City, now just a memory and long gone, but back then they sold a bevy of shortwave and ham radio equipment.

Photo 1. Author’s favorite portable of all time, Panasonic RF-2200

It was love at first sight when I saw the RF-2200 in the store’s gleaming glass display case way back when. The ‘2200 possessed all the bells and whistles to guarantee a good time for the SWL such as a rotatable ferrite AM broadcast band antenna, BFO (Beat Frequency Oscillator) for SSB reception, AM /FM/SW (3.9 – 28 MHz) bands, a D’Arsonval “S” meter that doubled as a battery status indicator, large four inch front mounted speaker, switchable coarse/fine tuning speed, base/treble/RF gain pots, 125/500 kHz crystal markers to calibrate the VFO, wide/narrow bandwidth switch, dial/S meter lights, earphone/recorder jacks and telescopic antenna for SW and FM. Plus it sported the renowned Panasonic trademark.

Photo 2. RF-2200’s rear: exposed battery compartment, screw connectors for external antenna, AC plug lower right. Rectangular earphone storage compartment is above batteries. Battery cover’s gray foam pad is dry rotted and needs replacement.

Part of the 2200’s ample avoirdupois can be attributed to the unit’s four “D” battery power plant, but Panasonic also supplied an AC cord to plug into the house mains and an earphone (located inside the battery case).  It runs forever on those four stout dry cells, one of the many positive features of this vintage gem.

Back in those days portable radios generally were not judged and valued based their diminutive size and weight but on the array of features geared to the end-user. Front panels were festooned with an array of controls rivaling an aircraft’s cockpit.  Knobs, analog dials, meters, large front-mounted speakers, switches and lots of black plastic were the order of the day. These all contributed to the beauty and practicality of portable shortwave radios back then.

One thing missing though was built-in memory channels; those existed in the operator’s brain and not yet delegated to memory chips.

Photo 3. Pack of four “D” cells, at 1 lb 4oz, weighs more than some of today’s portables!

One of the features long gone and missing in modern receivers these days is the “recorder out” jack that looks identical to an eight-inch earphone jack and yes the ‘2200 has one. It was used to plug in a tape recorder to memorialize an op’s favorite radio show. Of course back then there were many more shortwave stations broadcasting.  Gone also are those tiny incandescent bulbs, sometimes described as “grain of wheat” lamps that were used on S meters, dials, etc. The RF-2200 sports ample illumination for the S-meter and tuning dial which makes it a perfect bedside table radio for late night DX’ers and insomniacs.

Speaking of DX, the ‘2200’s rotatable AM ferrite antenna is one of the main virtues this radio possesses.  As an avid AM DX’er and faithful disciple of AM radio in general, the ‘2200’s rotary directional antenna nulls out noise and routinely pulls in stations as far away as Nashville (WSM), Chicago (WBBM), St. Louis (KMOX), Atlanta (WSB), Boston (WBZ) and Toronto (CJBC) when the sun goes down. Look closely at the antenna mount’s base and you’ll even see compass-like degree markings that’ll help when retrieving a favorite local or DX AM station.

Photo 4. Operating manual copy is available on-line

Shortwave coverage is approximately from 3.9 – 28 MHz as per the service manual, but I’ve checked the actual coverage of my unit using a calibrated service monitor and found it to be 3.47 – 28.9 MHz which makes sense since I’ve tuned to W1AW’s code practice on 3.581 MHz with no problem and have also heard the Volmet station on 3.485 MHz. That’s good news for hams wanting to receive 80m CW.  It gets a bit tricky though using the fine tuning option for CW hi hi.

AM broadcast band coverage is only from 525 – 1610 kHz as per the specifications; the AM band had not yet been extended to 1710 kHz at that time.  The ITU approved the extension in 1988. With that in mind I wanted to determine what the actual band coverage of my unit was. Again, using an IFR service monitor it was found to be from 514 – 1720 kHz; that’s good news for those who listen to stations at the top of the band.  It also explains why I can hear YWA, a non-directional radiobeacon (NDB) from Toronto, Canada just below the AM band on a frequency of 516 kHz. If you own a RF-2200 or DR22 tune to the bottom of the AM band and listen for it. You may also hear the warbling sound of NAVTEX stations on 518 kHz.  Switch on the BFO and wait for dark, you might get lucky like I have.

My apologies for not being an FM broadcast band listener so all I can state is the few times I’ve listened it sounded absolutely great.  The specs state a FM broadcast band frequency range of approximately 87.5 – 108 MHz. Mine measured from 86.8 – 108.9 MHz but I’ve yet to realign my unit so these ranges may vary among the population.  Note that I have undertaken the labor intensive task of aligning my National Panasonic DR-22 which is almost the exact same unit as the ‘2200. You can search this blog for my results that were kindly published by Thomas previously (click here to read).

Photo 5. Side by side comparison.  Panasonic RF-2200 on left, National Panasonic DR22 on right.

For those not aware, the RF-2200 was also marketed in Europe as the National Panasonic DR22 and in other parts of the world as the Cougar 2200. My DR22 was an eBay purchase, and that’s the best place to find either model.

DR22s are rather rare compared to the ‘2200 though. First off, one of the major differences with the DR22 is that it runs on either 110 or 220V, and that’s accomplished by a switch on the back of the unit.

DR22 runs on 120 or 240V via switch on rear panel

The DR22’s front panel stenciling is slightly different too, as shortwave bands are labeled “KW 1 – KW 6” in addition to “SW1 – SW6”.  Not sure what “KW” means though. Perhaps some reader can enlighten us.

Well, that’s about it, if you want a RF-2200, or DR22 then window shop on eBay.  Lately they have been selling from $40.00 US (parts only) to $455.00 for pristine units. That’s a pretty wide price range and even I’m surprised at the high prices being gotten for clean units.  All I can say is that the two I have now are staying right here in the shack with me.

Thanks for reading and 73’s.


eBay searches (note these eBay partner links support the SWLing Post):


Thank you so much for sharing this excellent post, Mario. Like you, I’m a massive fan of the Panasonic RF-2200; in fact, I own two of them! It is, in my opinion, the best AM/MW portable ever made. 

Post Readers: Any other RF-2200 and DR22 owners out there? Can anyone explain why the DR22 labels shortwave bands as “KW1 – KW6”–?  Please comment!


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!

Spread the radio love