Author Archives: Thomas

Finding a repair service for boat anchors and other vintage valve/tube radio gear

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Vintage tube radios will likely survive an EMP, but how do you power them without mains electricity?

Here’s a common question I receive from SWLing Post readers:

“Where can I have my vintage valve/tube radio repaired? Can you recommend a good repair service?”

The answer isn’t always a simple one, especially for those living in rural or remote parts of the world.

Go local

The short answer is: try to find a local repair service.

Unlike modern solid state radios, “boat anchors” (metal chassis vintage radios) are heavy and very pricey to ship.

Some repair services and retailers won’t even consider shipping vintage metal chassis radios because of the likelihood of damage or a tube or other component loosening during transit resulting in a DOA (Dead On Arrival) situation. They insist on in-store or local pickup/delivery.

Johnson Viking Ranger transmitter

 

Last year at the Dayton Hamvention I was speaking with an acquaintance who restores and repairs vintage tube radios–he specializes in WWII and Cold War era boat anchors (Collins, Signal Corps, Hallicrafters, National HRO, etc.). Although he makes a tidy profit from doing repairs, it’s most certainly a labor of love and not the most profitable use of his time.  He told me that he recently stopped accepting any repairs other than those delivered and picked up locally.

He told me he took great care in packing equipment after repairs had been made–he’d secure all components so that they couldn’t budge during shipment and would either double box or use industrial strength cartons. Being so diligent, his return shipments almost always arrived unscathed, but customers would complain about the shipping costs. He could, of course, skimp on packaging, but then risk his repair work being undermined by rough handling. He was never willing to compromise on shipping and I certainly don’t blame him.

So again, due to the complexities of shipping heavy gear, I always recommend trying to find someone local to do your “boat anchor” repair work first.

Where can you find a local repair shop? If you belong to or know of a local ham radio club, stop by a meeting and ask around. If there’s a vintage radio repair technician in town, someone in the club can likely connect you.

Shipping boat anchors

With that said, there are some excellent repair technicians out there who will take work via parcel shipments, but be prepared to pay upwards of $50-150 each way each way (depending, of course on the radio size and weight).

Lighter tube radios are easier and cheaper to ship, but should still be packed carefully. Bakelite radios, for example, are lightweight but incredibly fragile.

In short: if you ship your vintage radio, pack meticulously and confirm that your repair person will do the same.

And where do you find repair services? I point readers to radio repair service reviews on eHam.net. You might also search the QRZ.com forums or even post a question.

Let’s be clear: some radios are worth the shipping costs!

I am fortunate in that I do have a local friend and mentor Charlie (W4MEC) who repairs tube gear. Better yet, Charlie is willing to teach me how to do repairs and alignments myself. This, I would argue, is the best of both worlds!

A Note of Caution: When it comes to repairing tube/valve gear, I believe you should always learn the ropes with an experienced technician. Unlike battery-powered solid state devices, tube gear is mostly high voltage. If you don’t know what you’re doing inside the chassis of a tube radio, you could be severely shocked or even electrocuted. No radio is worth that price.

Who do you recommend?

If you have any advice about repairing boat anchors and other vintage electronics, please comment! Also, if you can recommend a repair service, please share details.

AM receiver design with regards to IBOC bandwidth claims

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Many thanks to SWLing Post contributor, Emilio Ruiz, who writes:

Hi Thomas,

I’m writing because found this (interesting) analysis about radio
components and the impact on radio receiver quality:

http://www.geocities.ws/shreddermanrulz/myth1.htm

I think may be are interesting topic for readers of the SWLing Post.

This is interesting, Emilio.  Thank you for sharing. Although the reason the author put together this post was to refute IBOC’s claims about testing AM receivers, it is also a fascinating look into cheap AM radio/receiver design.  Thank you for sharing!

Remembering Don Schimmel

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Photos courtesy of Skip Arey

This weekend, I learned of the passing of my friend, Don Schimmel.

Don was a prominent figure in the world of shortwave radio, author of Radio intrigue, and my go-to man on numbers stations and any other mysterious signals. Over the past ten years, I’ve gotten to spend quality time with Don at the Winter SWL Fest.

My buddy, Gary Donnelly, a regular here at the SWLing Post, was the one who informed me of Don’s passing. Gary wrote the following about his dear friend:

It is with much sadness I announce the death of my SWL Elmer, neighbor and good friend, Don Schimmel, 91. Don passed away at his Hedgesville, WV house.

Don served his country first in the US Navy as a communications guy, then a career at the Central Intelligence Agency where he again was a communications expert. Don served at several locations in Central and South America. Don spent his retirement years in the communications/radio area. He was a “Scanner Scum” with others from the NASWA group. He wrote for Popular Communications and also wrote a small monthly article called Radio Intrique for Dxing.com, a publication of Universal Radio.

Don got me interested in SWL and introduced me to the NASWA group where we later attended several meetings of the group, me more than me. Don gravitated to focusing on the Cuban numbers stations and until a few months before his death, he would tune them in.

Don remained in good health and spirits until past his 90th birthday. He will be missed by the community and he will be missed by me.

Indeed, he will be missed by us all. Thank you, Gary, for sharing this information and for all of the support you gave Don over the years.

DE1DGK reviews the affordable Tecsun R-9012

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Many thanks to SWLing Post contributor, DE1DGK, who shares the following mini review of the Tecsun R-9012:

I also have the Tecsun-R-9012, the little analog brother of the R-920c with digital display, and like to tune over the given bands with it. The sound is loud and clear and speaker-quality seems to be quite good as well. With earphones you can listen FM in stereo sound.

Either on Shortwave and Mediumwave, selectivity and sensitivity are fantastic for such a little 20€ worldband receiver. On FM, the bigger stations come in fine but it’s not very selective for weaker signals or FM-DX.

For shortwave, an external antenna like Tecsun AN-05, often overloads the receiver. It’s not recommend to use it for such low cost receivers at all.

In fact, the serial telescopic antenna works good enough in most of the situations. It could be helpful to shorten telescopic antenna a bit so reception might be better when there is too much RFI around. It depends from band to band. Battery life is amazing. It only needs two AA-batteries and works over months.

When you look for a basic worldband receiver, the Tecsun R-9012 is one of the best analog devices in the 20€-price-range. On the internet are out many reviews and tests about this little receiver which are all positive and often outperforms much more expensive worldband receivers. I would rate the Tecsun R-9012 with all pros and cons with 4.5 out of 5. It does perform great. Ideal for shortwave beginners and listeners who like the analog-feeling or those who want a universal little radio with shortwave.

Thank you for sharing your review!  I agree–the R-9012 is a safe choice for simple and affordable radio fun.

Tecsun R-912 retailers:

All India Radio to shut down national channel

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All India Radio (AIR) Headquarters in Dehli, India. Photo courtesy of Wikipedia.

(Source: The Telegraph)

Public broadcaster Prasar Bharati has decided to close down All India Radio’s national channel and its regional training academies in five cities as part of “cost-cutting measures” and to “rationalise” services.

The programme, technical, ministerial and other staff posted at the national channel in Todapur and Nagpur, etc., apart from those working at the Regional Academies of Broadcasting and Multimedia (RABMs) in five cities, may be posted as per the requirement of the organisation, said the order issued by the Directorate General, All India Radio (AIR).

In order to “rationalise AIR services and keeping in view of the cost-cutting measures”, it has been decided by Prasar Bharati and communicated to DG AIR on December 24, 2018, to close down the national channel of AIR and RABMs located at Ahmedabad, Hyderabad, Lucknow, Shillong and Thiruvananthapuram with immediate effect, it said.

The order, dated January 3, stated that the programmes of archival value maintained by the national channel should be sent to the central archives in Delhi for digitisation and preservation for posterity.

The national channel, which broadcasts from 6pm to 6am, started airing in 1987 and played an important role in keeping people abreast of national issues, an AIR source said.

“National channel has a huge repository of programmes and the personnel will now be redeployed,” the source said.

It is understood that certain sections within AIR are not happy with the decision as they believe the national channel was an important part of the broadcasts and there were other ways to cut costs than shutting it down altogether.

“These days you can livestream, you can make it an application-based service, there are many other ways of cost cutting. The effort should have been to strengthen the national channel and not close it down,” a source said.

Click here to read at The Telegraph.

Many thanks to SWLing Post contributor, Dan Robinson, shares an image of the letter (mentioned above) which was originally posted by Jawahar, on the Gary Cohen Facebook page:

Guest Post: A visit to Tokyo’s Akihabara district

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Many thanks to SWLing Post contributor and word traveler, Chris Johnson, who shares the following:

This past year while traveling for business in Japan I decided to explore a district within the city limits of Tokyo known as Akihabara or better known to locals as the “Electronics District”.

After jumping off the train I found my senses bombarded by a cacophony of sounds and enough neon from the street to the sky to put your senses into overload. The streets were crowded and the stores were filled with every modern electronic device known to man.

Click here to watch video.

My imagination ran wild, I started wondering what this place would have been like in the 1970’s when some of the most cutting edge electronics were CB radios or shortwave receivers, the different brands, models etc… Perhaps some of that still existed here so I started wandering the streets and found more of the same you would find in a big box store but multiplied by 10, overwhelming.

Just when I was ready to give up the search I turned the corner down a side street and discovered a red awning with “Tokyo Radio Department Store” emblazoned on it, I felt like I discovered a lost treasure amongst the modernity.

I walked through the main entrance and was immediately drawn down a maze of narrow corridors that were staffed with small stores and stalls that sold electronic parts both popular and obscure, it was incredible. That was just the first floor with 3 more above to discover, I thought to myself if I ever wanted to build a transmitter this is the one place in the world where you could shop and find all the parts you need.

As I ventured up the narrow stairs to the floors above once again I felt like I found a treasure of gold, before me were shelves and displays crammed full of radios, some I haven’t seen in many years and some from the recent past .

This was like a Hamfest and eBay together under one roof. Truly incredible as you will see in the pictures below. I couldn’t get close to some of the ones wrapped in plastic but maybe a sharp eyed enthusiast can Identify them. I highly recommend anyone traveling to this part of Asia to check out this hidden gem you will not be disappointed.

Thank you so much for sharing this photo tour, Chris! I mean…WOW! There are so many radio gems here. I see some classic solid-state receivers, ham radio transceivers and even valve gear I’ve never seen before. Amazing!

Thank you for taking the time to share your tour of the Akihabara district of Tokyo!

Post readers: Please comment if you’ve ever visited the Akihabara district or any other “Radio Row” districts in the world. please consider sharing your photos!

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“Radio on the Edges”: Robert’s lifelong pursuit

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(Photo source: All Things Radio by Robert Gulley)

SWLing Post contributor, Robert Gulley (AK3Q), recently published a post on his blog discussing the edges of radio reception and his pursuit of DX in all forms. I think this article speaks to many of us.

(Source: All Things Radio by Robert Gulley)

Radio on the Edges can mean a number of different things, depending on one’s perspective. For me, at the moment, it means distance. It means reaching the edges of where a signal can go.

One of the more intriguing aspects of radio is just how far a signal will travel. I have been a DX chaser for years, starting with AM Broadcast signals when I was a kid. The further the station, the cooler the signal in those days.

Then of course there was Shortwave radio. Now that was cool! That was real DX! Hearing countries from around the world was just the best! Well, that it, the best until I became an amateur radio operator and could send signals around the world! Whoo-Hoo! Hot Dog! Oh yeah, baby!!

Still to do on my DX list is to bounce a signal off the moon. Technically my signals have already gone into space, to the ISS and to orbiting satellites. But the moon so far has eluded me. Well at least, confirmation of bouncing off the moon back to myself or to another amateur has so far eluded me.

But Radio on the Edges also means a different kind of DX.[…]

Click here to continue reading on Robert’s excellent site, All Things Radio.