Category Archives: Radios

Travel discovery: the Telefunken Superheterodyn Caprice 5451W

I’ve been traveling along the coast of South Carolina this week, and on Thursday, I found myself in the historic town of Conway, South Carolina. I parked downtown and strolled into the past via Papa’s General Store, a small local store with a lot of merchandise––and a lot of charm.

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While browsing a display of antiques, I happened to notice a vintage radio perched on a high shelf. Here’s what caught my eye:

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I asked, was the radio was for sale? And, indeed, it was. One of the sales clerks pulled it from the shelf, dusted off the top, and read the price: $74. I noted that it was a West German Telefunken receiver.  I asked the clerk, Chris,  if it worked, and he confirmed that it did; it belonged to his uncle, who had clearly taken very good care of it.

Chris allowed me to plug it in, turn it on, and tune in a couple of local stations…The Telefunken produced beautiful audio without even the slightest hint of a hum. Chris was pleased that I appreciated the radio, and sincerely wanted me to take it home, so he lowered the price a bit further.  I agreed, and purchased it without hesitation. Just couldn’t help it…

That's Chris behind the counter.

Chris behind the counter with his uncle’s classic Telefunken.

The Telefunken Superheterodyn Caprice 5451W covers the AM/mediumwave band and FM. It’s a tube radio produced in the early 1960s in West Germany, and is now the only tube-based radio I own that covers the FM band.

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Of course, I was very eager to get the Telefunken on the air, so that afternoon I headed to our balcony overlooking the Atlantic, tuned around a bit on the mediumwave band…and was simply amazed at all it could receive.  I picked up my smart phone, and with it made a very short recording of the Cuban station, Radio Reloj, on 820 kHz:

My smart phone’s microphone doesn’t begin to do the Telefunken’s rich audio justice, but you can clearly hear Radio Reloj’s ticks and “RR” in Morse Code at the top of the minute (indeed, if you’re listening with headphones, you may also hear crashing waves in the background). Something nearby generated a lot of RFI right on frequency, too , but the rest of the broadcast band had a surprisingly low noise floor.

I also spent some time with the Telefunken on the FM broadcast band; with a simple wire antenna, this worked wonders.

In my humble op, the audio the Telefunken produces is simply beautiful.  And so, I’ve got to add, is this vintage radio. See for yourself.

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HDTV via an SDRplay RSP

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Check this out: a tutorial on decoding ATSC HDTV via the SDRPlay RSP software defined receiver.

(Source: coolsdrstuff.blogspot.com)

One of the main reasons I got the SDRPlay RSP was its wide bandwidth. It can show up to 8 MHz of spectrum at once. I figured it should be able to watch TV. Turns out it can, but it’s only designed to receive DVB-T.

Unfortunately, they only use that in Europe and a few other places. In North America we use ATSC.

In this article I will show how to use it to watch ATSC.

Click here to read the full tutorial…

This is one of the things I love about SDRs: in many ways, their applications are only limited by your imagination.

Click here to read our review of the SDRplay RSP.

Not all Degen DE1103 eBay listings are the new DSP vesion

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Many thanks to SWLing Post reader, Eric Weatherall, who writes:

I’ve been interested by news of the updated DSP version of the Degen DE1103.

I just saw an eBay auction for a used DE1103 which listed “DSP” in the title. But I looked at a photo of the product and it showed the labeling of the original product. If you look at the bottom left of the unit, the older radios have two lines of product description printed in black, and the newer radios have one line.

Based on photos I found online, here is the old product’s description (which applies to both the Degen and Kaito versions)

“PLL FM STEREO/SW MW LW DUAL CONVERSION SYNTHESIZED WORLD RECEIVER”

And here is the new product’s description.

“FM STEREO/SW MW LW DIGITAL WORLD RECEIVER”

I thought this would be useful for anyone wishing to buy the new DSP version of this radio where a photo of the actual unit is shown.

Eric has a good point–many times on eBay, sellers simply copy descriptions from previous or existing listings. You my find a used DE1103 listed as a unit with DSP. It’s best to confirm the version with the seller before purchasing. To my knowledge, only the 2015 version of the Degen DE1103 has DSP.

Tudor confirms: a new version of the Degen DE1103

de1103-dspAfter publishing our previous post about a potentially redesigned Degen DE1103 with DSP, SWLing Post reader, Tudor, comments:

Yes, the DE1103 looks like it’s been redesigned. You can see it dissected here:
http://bbs.tecsun.com.cn/0002.asp?open=724665

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Photo source: http://bbs.tecsun.com.cn/ via Tudor. Click to enlarge.

And, if I’m not mistaken, the SiLabs DSP chip can be seen in this picture:
https://dl.dropboxusercontent.com/u/5417175/2015102316185240911.jpg

Photo source: http://bbs.tecsun.com.cn/ via Tudor

Photo source: http://bbs.tecsun.com.cn/ via Tudor. Click to enlarge.

Wow–thanks so much for confirming this, Tudor! This is obviously a redesigned Degen DE1103. I also noticed “NEW-DE1103-MAIN-1.2” silk-screened on the board:

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Photo source: http://bbs.tecsun.com.cn/ via Tudor. Click to enlarge.

The Hong Kong-based eBay vendor Bigbargainonline is selling the new Degen DE1103 for $79.00 US shipped. I’ve purchased from them several times before and was pleased with the experience.

There are other vendors selling the new Degen DE1103 as well (click here to search eBay) but make sure you’re purchasing the 2015 version of the Degen DE1103 since you can still find the cosmetically-identical legacy DE1103 new in box.

Tudor, thanks again for sharing a link to the discussion on tecsun.com.cn–while I can’t read Chinese (and the Google translation leaves something to be desired!) the photos certainly tell the story.

A DSP version of the Degen DE1103?

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[Click here to read our update to this post.]

SWLing Post reader, Dan, recently sent me this link to the Degen DE1103 on AliBexxpress: http://m.aliexpress.com/item/32521065066.html

The vendor notes a “USA DSP chip” in this unit.

The Degen DE1103 has been around for many years; a testament to its popularity. I’m pretty sure it never had DSP receiver components, though.

I told Dan that this was most likely an error of de1103-dspthe Aliexpress web marketing person.

Today, Dan sent me another link, this time to an eBay listing with the title:

“DEGEN DE1103 DSP FM/LW/SW/MW Stereo Dual Conversion Digital World Band Radio”

I took a close look at the photos and noticed that “DSP” is featured on one of the front panel stickers.

Could it be that the DE1103 has been re-designed with a DSP chip? Can anyone confirm?

Shack Photo Contest: We have a winner!

Vimal's favorite radios are the Tecsun PL 390 and the Eton E100. (Photo: Vimal)

Vimal’s favorite radios are the Tecsun PL-390 and the Eton E100. (Photo: Vimal)

Please join me in congratulating SWLing Post reader, Vimal, for winning our October Shack Photo contest!

Vimal notes:

“I love these radios (see photo above). The Tecsun PL-390 stereo DSP radio with selectable band width- is able to pull in a slew of shortwave stations in quite clearly (of course a lot depended upon time of day and atmospheric conditions.) I can routinely receive signals from Asia, Australia, South America and Europe which is exciting!

And another one is my small Eton E100 Radio- The highlights of this one is that the stereo through headphones sounds great. Its Informative LCD display includes the frequency and the time while the radio is on (some other radios require a keypress to display the clock). It also features a nice amber backlight for the LCD display. Not to forget the sturdy whip antenna.”

Congratulations, Vimal–and many thanks to everyone who shared their photos.

Vimal’s entry was chosen at random from the 62 SWLs and ham radio operators who shared their shack/listening post photos. What an amazing number of entries!

I plan to take the many photos and notes we received from readers and turn them into an online photo galley. I’ll post this as soon as I’ve curated and formatted entries.

If you didn’t win this contest, fear not! We’re already plotting another simple & fun contest before the end of the year.

Reader Challenge

Note, too, that we are still collecting entries for the latest reader challenge: Emergency radio and a chance to win a prepper radio package!