Radio Caroline: A video diary of the weekend aboard the MV Ross Revenge

Many thanks to Mike Terry who shared the following note and video via Facebook:

The great old days when the signal was mellow and radio waves were not blocked by buildings and hills and propagated beyond the horizon especially at night, it all added to the excitement. We would never have heard many of the great records of the 60s and later without this station! So many international stars made their name on the offshore stations around our coast 50 years or so ago. UK radio was changed for ever.

[Note: This video may only be viewable via Facebook or the SWLing Post site.]

B15 update: Alan Roe’s guide to music on shortwave

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Many thanks to SWLing Post contributor, Alan Roe, who shares his updated Music on Shortwave list for the B15 period.

If you love listening to music on the shortwaves, you’ll love Alan’s free guide.

Click here to download Music on Shortwave B-15 (v3.1)

BBC: Raspberry Pi-powered transmitters broadcast Syrian radio

1 Reply

Many thanks to SWLing Post contributor, Richard Langley, who shares the following:

Latest item, which provides more information, on this previously mentioned news story:

http://www.bbc.com/news/technology-35690688

Here’s an excerpt:

Raspberry Pi computers are being used to power “micro” radio transmitters in Syria.
The Pocket FMs, as they are called, were designed by a German organisation as a way of providing Syrians with independent radio.

The devices have a range of between 4 to 6km (2.5 to 3.75 miles), which is enough to cover an entire town.

At the heart of each is a Raspberry Pi, the credit card-sized single-board computers.
About two dozen have been built, and the designer says they are intended to be as easy to set up as a piece of flat-pack furniture.

“We lost one device in Kobane”, Philipp Hochleichter told BBC Radio 4’s PM programme.

“But due to the bombing – not due to a malfunction.”[…]

Continue reading on the BBC website…

The Raspberry Pi is an amazing little computer; capable of so much at such a low cost. I just purchased a Raspberry Pi 3 yesterday; hoping I can think of a clever way to use it for a little radio fun..

The Heathkit GR-78: Ed’s “basket case” radio

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Many thanks to SWLing Post reader, Edward Ganshirt, who writes:

I picked up this Heathkit GR-78 at a estate/moving sale. It was in a pile of “e-waste” (you know, old vcr’s broken TVs, remote controllers, dead cell phones, etc.).

I found a container and sorted through the stuff to retrieve all what looks like Heathkit parts. The radio was disassembled and scattered about. I was able to collect all the critical components and brought the works to the sales table. The person manning the table said that was stuff they were discarding and I could have it for free but the Easter basket was $0.50.

So far I had put little time into it but was able to mechanically assemble it completely. All the fasteners holding the cabinet were missing. The rest appears to be all there but the primary side of the transformer is open and the NiCads are shorted and stone dead. The manual that I found in their recycle bin is complete and appears to gone through 3 owners by 3 sets of handwriting in the notes and comments through out the manual. If anything this looks like a CSI/forensics troubleshooting process getting into the mind of 3 different owners unsuccessful at making it work.

I will keep you posted on the progress.

WA1-LAI

More power to you, Ed! There are few things as difficult as picking up where someone else left off on a kit build. Your project is exponentially more complicated since there were three people involved and parts are scattered. Please update us with your progress.

Readers: If you have any experience with the GR-78, I’m sure Ed would welcome your input!

Portable power for active antennas

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CPI1000 mit Powerbank

Many thanks to Dennis at Bonito for sharing a link to an article he recently published on the Bonito blog:

Autonomous power supply of our active antennas via USB and power bank

It is getting to be more and more difficult to procure reasonably priced analogue external plug-in power supplies because just like old light bulbs they are no longer allowed to be produced due to power consumption restrictions. We are spending a lot of time to find and buy remaining stock so that we can offer our customers noise-free external power supplies. But for years, there has been an alternative.

Our MegaLoop ML200, ML052, the MegActiv MA305 as well as the GigActiv GA3005 can be operated internally with as little as 5V and so can be powered by the supplied CPI1000DP / CPI3000DP bias tee via a USB cable. In light of the annoying switching power supplies, PowerLAN and heightened mobility of listeners, this is a very practical alternative and offers much more flexibility for the customer. Unfortunately, this fact is not well known and that is why I would like to shed some light on this subject.[…]

Continue reading at the Bonito website.

Thanks, Dennis!

I should note that there are a multitude of 5 VDC powerblocks on the market. I have two made by Eton Corp (see above) that even have hand-crank power generation. I recently used one to power my Raspberry Pi (Raspberry Pirate!) for several hours.

As Dennis states, using a DC source certainly cuts down on interference from noisy power supplies.

Upcoming shows on the Isle of Music

CL find: A Braun “Slim-Line” A-301 amplifier and T-301 receiver

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Many thanks to SWLing Post contributor, Paul, who shares this link to a post on Craig’s List and asks:

“Interesting shortwave tuner, designed by Dieter Rams. Anybody know anything about this?”

I was not familiar with the Braun A-301 and T-301, but I know there are a few SWLing Post readers who are big fans of Braun gear and Rams’ designs. Perhaps someone can comment? If you’re a Braun collector and live in the DC area, this may be worth checking out.

Here’s the full description from CraigsList:

This is a Braun amp/tuner combo from the 80’s in excellent condition. It includes the A-301 integrated amplifier and the T-301 AM/FM/SW tuner designed by Dieter Rams. Both units have been converted to 110 Volt, but only the amp has an American power plug. The tuner will be supplied with an adaptor. This is the last series manufactured in Germany, called “Slim-line”. The amp was recently serviced by Musical Technology in Springfield, bad capacitors were changed out and crystallized solder connections were redone.

This A-301 amp uses DIN connectors for inputs and one will be supplied with the unit. The tuner has a captive DIN connector, and if you wish to use it with other amps, you will have to get a female DIN to RCA plug adaptor. It works fine with this amp, though. This analog tuner has FM (UKW), AM (MW) and SW bands as well as 5 manual presets.

All metal construction with excellent design and ergonomics. Not a huge amount of power, only 42 watts, but very good sound, excellent extended bass and a very captivating midrange for a solid-state amp. Unusual balance control with a variable loudness contour. Tuner is also unusual, with a shortwave section as well as sensitive FM and AM bands. Overall, very good sound.

I will also supply one set of DIN speaker connectors without wires, although this amp has 2 sets of outputs. I will also supply a set of 2-prong DIN speaker plugs, but they are not capable of accepting large speaker wires. If you wish to use larger gauge wire, you will have to find larger plugs (available on Ebay).

More info on this amp can be found at Radiomuseum here:

http://www.radiomuseum.org/r/braun_a301a_30.html

Tuner info:

http://www.radiomuseum.org/r/braun_t301t_30.html

I can demo these units for any serious purchaser.