Category Archives: Ham Radio

New Reuter Elektronik RDR52 QRP general coverage transceiver

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!

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Radio Waves: Pocket SSB Transceiver, Radio On The Bay Event, New Book on History of Spaceweather, and PSK31 on 437 MHz from the Moon

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The uSDX/uSDR QRP transceiver (Chinese version)

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!

Ham Radio SSB Transceiver Fits in Pocket (Hackaday)

Talking about this Chinese ham radio transceiver requires a veritable flurry of acronyms: HF, SSB, QRP, and SDR to start with. [Paul] does a nice job of unboxing the rig and checking it out. The radio is a clone of a German project and provides a low-power radio with a rechargeable battery. You can see his video about the gear below.

SSB is an odd choice for low power operation, although we wonder if you couldn’t feed digital data in using a mode like PSK31 that has good performance at low power. There are several variations of the radio available and they cost generally less than $200 — sometimes quite a bit less.

There isn’t much on the front of the radio. There are a few buttons, a rotary encoder, and an LCD along with a speaker and microphone built-in. There are ports for power to run the radio if you want to not use the battery and a separate port for battery charging. There are also ports for a key, external microphone and speakers, and audio connections that look like they’d work for digital modes. According to commenters, the radio doesn’t have an internal charging circuit, so you have to be careful what you plug into the charging port. [Continue reading…]

(SIDE NOTE: I have been testing one of the USDX / USDR transceivers (a Chinese version–not the open source homebrew project) over at QRPer.com and have been very displeased with performance. So much so, I returned it for a refund. One of the biggest issues being spurious emissions that were produced in harmonics, but also the receiver is one of the worst I’ve ever tested. -Thomas) Continue reading →

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BBC Newshour and the first shortwave Transatlantic Tests

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Former BBC World Service HQ – The Bush House

Many thanks to SWLing Post contributors, Doug and Kris, who both share a link to BBC Newshour which was broadcast yesterday (Dec 12, 2021).

The final segment of the show focuses on the birth of international shortwave radio and the first Transatlantic tests. You can listen to this report over the next month via the BBC Sounds website. This is the final piece in Newshour and starts at the 45:05 mark. Very much worth your time!

Click here to listen to this segment on BBC Sounds (starting at 45:05).

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100th Anniversary of Transatlantic Tests: Special event station using a 1921 replica transmitter

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1BCG Transmitter in 1921 (Source: 1BCG.org)

Many thanks to SWLing Post contributor, Mark (AE2EA), who shares the following announcement:

2021 marks the 100th year anniversary of the historic Transatlantic Tests, where radio amateurs using the call sign 1BCG were responsible for the first successful radio communication across the Atlantic Ocean on “short waves.”

On December 11, 2021 the Antique Wireless Association will recreate these historic transmissions on 160 meters from the Vintage Radio and Communications Museum of Connecticut, using a replica transmitter constructed by volunteers at the Antique Wireless Association. This special event is your opportunity to relive a historic moment in amateur radio history.

More information can be found here http://1BCG.org

Here’s a summary:

The 1BCG replica transmitter will be operating as W2AN/1BCG on 1.820 MHz, plus or minus, using CW, from The Vintage Radio and Communications Museum of Connecticut. Transmissions from W2AN/1BCG will be one-way, just like the original transatlantic tests in 1921. You can get a SWL certificate for this Special Event by sending a copy of the transmitted message to [email protected]

Schedule: Transmissions start on December 11, 2021, on 1.820 MHz, +/-, at 1800 EST or 2300 UTC, then every 15 minutes thereafter for a total of five hours thusly; 1815, 1830, 1845, 1900, 1915, 1930, 1945, 2000, 2015, 2030, 2045, 2100, 2115, 2130, 2145, 2200, 2215, 2230 and the last transmission at 2245 EST.

Mark ~ AE2EA
Antique Wireless Association

I will definitely be listening! Thank you so much for sharing this, Mark!

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Large archive of CW off-air recordings from Italy

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Many thanks to SWLing Post contributor, LUIGI Ciampoli (IZ4KBW), who writes:

Some time ago with a friend of mine I created a very big archive of CW QSO recordings available for everybody who want to listen to CW traffic. The idea was born by the need to give to newcomer HAMS material to train on real CW traffic on the bands (with QSB, QRN, QRM, etc.).

So we started to record our ragchewing, ordering files with date/calls of participants/frequencies/keys used and WPM speed of QTC. At the beginning it was not a serious matter, but nowadays the archive counts thousands of records with local and international radio friends…hours and hours of “swinging morse code.” Some of these QSOs are made with ex professional RT involved on radio ham bands spending time talking about the past golden era and having QSO with OMs on the radio.

We released this large archive of recordings in a Google drive folder that can be shared. The archive is located at the following link : https://drive.google.com/drive/folders/1XaF3Mvwa6WvgOCzZjp0NwzgnYdNHsW2Q

de IZ4KBW/op Luigi

Sample recording made on November 21, 2021. I8QFK, IZ8VKW, IU1MRY (Using a Paddle on 7036 kHz):

Thank you for sharing this, Luigi! What a wonderful idea. I think I will approach you about adding a few of these to the Shortwave Radio Audio Archive as well as there are very few ham radio CW recordings.

Click here to check out IZ4KBW’s CW QSO off-air recording archive.

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Radio Waves: Cassette’s Role in Creation of Internet, AU2JCB Special Event, Joel Hallas (W1ZR) SK, and Shortwave Chatter

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Radio Waves: Stories Making Waves in the World of Radio

Many thanks to SWLing Post contributors Datta (VU2DSI), Kim Elliott, Ron, and the Southgate ARC for the following tips:

How the Cassette Tape Helped Create the Internet (WNYC Studios)

In 1983, Simon Goodwin had a strange thought. Would it be possible to broadcast computer software over the radio? If so, could listeners record it off the air and onto a cassette tape? This experiment, and dozens of others in the early 80s, created a series of cassette fueled, analog internets. Our friend Simon Adler at Radiolab reports.

This is a segment from our November 26th, 2021 program, How Cassette Tapes Changed the World. [Read and listen to this piece at WNYC Studios…]

AU2JCB operation 19 NOV to 14 DEC 2021 (Datta, VU2DSI)

AU2JCB is a special event callsign to commemorate the birth date (30 NOV) & to pay homage & tell about the great INDIAN scientist Aacharya JAGADISH CHANDRA BOSE who is recognized as the “Father of Wireless Communication” by the scientific community of our world.
VU2DSI- Datta Deogaonkar will operate with this AU2JCB special event call sign. Continue reading →

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A selection of Black Friday/Cyber Monday 2021 Radio Deals

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While I’m not exactly in the market for anything other than a few radio accessories, I have been checking out some Black Friday Deals online. I must admit that there seems to be even more deals this year than there were last year.

A few retailers worth checking out (in alphabetical order):

Airspy

As we mentioned in a previous post, AirSpy is once again offering huge discounts via their international distributors. This is a great time to snag the HF+ Discovery.

C.Crane

C.Crane has a small selection of items on deep discount for Black Friday including two of their popular SoftSpeaker pillow speakers and an LED flashlight. Click here to check out their deals.

Elecraft

US manufacturer, Elecraft, has included a number of products in their Black Friday sale. Note that some items may have a 6-8 week lead time. I’m a massive fan of their KX2 and KX3 transceivers–they currently have shack-in-a-box KX2/KX3 packages in their promotion. Click here to check out their sale.

GigaParts

GigaParts always has an impressive number of items in their Black Friday/Cyber Monday sales. They have the super popular Yaesu FT-891–which is a great general coverage transceiver for broadcast band listening–for $629.95. I also noticed they have the Icom IC-R6 wideband handheld receiver in stock for $185.95. Click here to check out all of their deals.

Ham Radio Outlet

HRO has a number of radio items in their Black Friday sale. In particular, they have the SDRplay RSP1A wideband SDR for $99.95. They also have the Yaesu FT-891 for $629.95. They’ve many more deals, so check out their homepage for details.

Ham Test Online

Ham Test Online is offering a sale on their online license self-paced programs. Everyone in my family used this system for at least one license level and it worked brilliantly. From their newsletter:

Take advantage of our Black Friday Cyber Weekend Sale from Black Friday through Cyber Monday (November 26-29). If you’ve been wanting to get your license or upgrade, do it now and save $10 on each of our courses and $35 on the FCC fee:

Technician — $19.95 (33% off the $29.95 list price).

General — $24.95 (29% off the $34.95 list price).

Extra — $29.95 (25% off the $39.95 list price).

Renewal — $14.95 (50% off the $29.95 list price).

Click here to check it out at Ham Test Online.

Main Trading Company (MTC)

Two readers note that MTC is having a year sale which includes a Tecsun PL-880 for $169 and a number of radios and accessories.

Click here to check out their home page.

Radioddity

Radioddity’s Black Friday sale includes 15% off site-wide. They’re one of the biggest Xiegu retailers, so if you’ve been considering a G90, X5105, or the new X6100 for example, this would be a great time to purchase. Click here to check out their deals (use the discount code BFCM).