Category Archives: Shortwave Radio

Replacement power supplies for WJ-8711A/HF-1000A series receivers

Photo by Paolo Viappiani

Many thanks to SWLing Post contributor, Dean Bianco, who writes:

Inspired by Chuck Yarbrough ‘s YouTube video, I ordered one of the newly-manufactured replacement power supplies for the WJ-8711A/HF-1000A series from WJ Systems, a new company run by noted WJ master technician Stephen Pappin. For those of us who own one (or more) of the dozen or so variants of these now-classic early DSP receivers, these new PS’s can provide an extension of their useful lifespans. These units are direct substitutions for the flawed Condor switching supplies, the Achilles heel of an otherwise fine general coverage radio. Nearly all of the original Condors have lived past their useful, in-spec lifespans and have become (or soon to become) malfunctioning ticking time bombs that will summarily go off the rails (pun intended) and spike all kinds of nasty voltages that will destroy your pricey beauty forever. While admittedly there are other inevitable EOL issues endemic to the 87xx series, e.g., expired time-keeping battery RAM and aging encoders making it harder to find spare parts, a well-cared for receiver can enjoy a much-welcomed rejuvenation and keep the grim reaper of radios at bay for a while!

The official website for WJ Systems is: www.wj-systems.com

Chuck Yarbrough’s YouTube videos demonstrating the installation and testing of the new power supply:

Part 1 of 2:

Part 2 of 2

Thanks!

Dean

Thank you for sharing this, Dean!  This is a brilliant upgrade for an iconic receiver!

We’re a garage band, we come from garageland

Hi, FastRadioBurst 23 here letting you know of a couple of our shows this week. On Sunday 28th April 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz we have The Shortwave Garage Sale beamed to Europe via Shortwave Gold. Pull open that garage door, crank up your shortwave radio to 11 and enjoy our rousing Garage and Psyche special. Why not even get into some overalls and lie down on one of those mechanic’s creeper things and really get into the garage vibe!

On our new day of  Wednesday 1st May 2024 via the services of WRMI  we bring you another episode of WMMR – Mystery Mix Radio at 0200 UTC on 9395 kHz. Who knows what DJ Frederick will play but we promise you it’ll be interesting and fun.

We are still looking for some financial help to cover our production and transmission costs for our shows on shortwave so here’s our fundraising video below. We’d love to keep our show on the air for the rest of the year and we are looking for donations (no matter how small as everything helps) to keep our shows bouncing off that ionosphere. Remember, radio connects us all!

For more information on the shows please email [email protected] and check out our old shows here.

May 2024: From the Isle of Music and Uncle Bill’s Melting Pot

Many thanks to SWLing Post contributor, Bill Tilford, who shares the following broadcast schedules:

From the Isle of Music, May 11, 2024 Broadcast:

The main feature will be special guest Kiki Valera with some of his new son cubano album “Vacilón Santiaguero”.
Broadcast times: May 11: 0900-1000 UTC 9670 kHz &
1900-2000 UTC 3955 and 6070 kHz

Uncle Bill’s Melting Pot, May 18, 2024 Broadcast:

The main feature will be special guest Eugene Pao, Hong Kong’s foremost jazz guitarist, with some of his new album “Jazz at Lincoln Center”, recorded live during a tour of the US.
Broadcast times: May 18 0900-1000 UTC 9670 kHz &
1900-2000 UTC 3955 and 6070 kHz

Both programs will feature additional music to round out the hour.
It’s great to be back on Channel 292!

Carlos’ Shortwave Art and recording of the Voice of Korea (April 23, 2024)

Many thanks to SWLing Post contributor and noted political cartoonist, Carlos Latuff, who shares his radio log art of a recent Voice of Korea broadcast.


Carlos notes: 

Kim Jong Un guides combined tactical drill simulating nuclear counterattack, via Voice of Korea.

Click here to listen via YouTube.

Kyodo News Radiofax: Japanese Disaster FM Stations and a Lack of Personnel

Many thanks to SWLing Post contributor, Carlos Latuff, who writes:

Hi Thomas,

I received today by radiofax in Porto Alegre the morning edition of Kyodo News and the front page news is that, due to lack of personnel, the Japanese government has not put into operation more FM radio stations for use in disasters.

Here’s an article dealing with the subject. https://www.tokyo-np.co.jp/article/322546
Since the original is in Japanese, here’s an English translation:

Oku-Noto: No temporary disaster FM stations opened due to lack of personnel, challenges in disseminating support information

In four cities and towns in the Oku-Noto region of Wajima, Suzu, Noto, and Anamizu, Ishikawa Prefecture, which suffered severe damage from the Noto Peninsula Earthquake, local governments have set up ‘Temporary Disaster Broadcasting Stations” (Disaster FM) to disseminate support information to residents. Interviews with local governments revealed on the 20th that the government has not done so. The lack of personnel is said to be a contributing factor, and it has become clear that there are still issues with the way administrative information is communicated, such as procedures for restoring water outages and setting up temporary housing.

Disaster FM was institutionalized in 1995 based on the experience of the Great Hanshin Earthquake. If a local government applies to the Ministry of Internal Affairs and Communications and obtains permission, they can be temporarily installed. In the wake of the Great East Japan Earthquake in 2011, 28 municipalities opened and operated them. It was also opened during the 2016 Kumamoto Earthquake and the 2018 Hokkaido Eastern Iburi Earthquake.

Disaster FM broadcasts on the radio about the safety of residents, evacuation information, and the status of restoration of lifelines such as electricity and gas. It also provides administrative information on the reopening of roads, supermarkets, gas stations, etc., as well as disaster victim certification and donation procedures, and plays a role in supplementing disaster prevention administrative radio.

According to the Ministry of Internal Affairs and Communications, in the wake of the Noto earthquake, employees of the ministry’s Hokuriku General Communications Bureau visited city halls and appealed for the establishment of such systems.

Patrizio receives detailed information about the Woofferton test transmission he confirmed

Woofferton Transmitting Station (Photo by Shirokazan via Wikimedia Commons.)

Many thanks to SWLing Post contributor, Patrizio Cardelli, who shares the following background story (via our friend, Dave Porter) about a Woofferton test transmission received at his QTH in Italy:


Hi Patrizio,

Thank you for your report and I confirm the details for 9885 kHz are correct. These transmissions were to fault-find on a 250/300 kW sender at the UK HF transmitter station at Woofferton in England.

These duration of these tests can be variable as the engineers can sometimes need a long time to establish a fault or they may interrupt the test, make an adjustment and resume. This is particularly so if the fault is of an intermittent nature.

Encompass Digital Media, Woofferton is the only remaining UK HF sender broadcast station and also is the only one with this transmission test audio and email address.

The audio is contained in a file play-out system and incorporates non-copyright music and voice announcements from one of the engineers, Martin, 2E1EKX at the transmitter site.

There is a Club amateur radio station on site with the callsign M0WOF and the operators are Matt G8XYJ, Dave M0MYA, Gillian M0OVW, John G1JOD and Martin 2E1EKX.

The amateur radio repeater GB3VM that was on site has recently been moved and the history of it is here https://hbrg.co.uk/gb3vm/

Woofferton has recently celebrated 80 years on the air and there was much publicity in the broadcast media.

My son Matt, G8XYJ was the Transmitter Engineer on duty running the 9885 tests.

He features it in the following Youtube video: