Try to learn something about everything, and everything about somethingThomas Huxley “Darwin's bulldog” (1824-1895)

Make It Tea Blog

0 Post(s) for August 2026

Old Magazines Galore

While surfing the interwebs looking for interesting radio content I came across a brilliant website that has scans of THOUSANDS of old radio-related material.

https://www.worldradiohistory.com

There are trade journals, catalogues, magazines from all parts of the world. It must be a massive undertaking to create and maintain, and to source the material and scan it.

I found almost the complete set of Short Wave Magazine issues going back to the pre-war period! There are also lots and lots of other great magazines.

Short Wave Magazine is of particular importance to me. When I was first getting interested in Short Wave Listening and Amateur Radio as a teenager in the early 1980s I read Short Wave Mag (SMW) and Practical Wireless.

But the thing that cemented my whole outlook on what Amateur Radio is (or should be) was a big pile of SWMs from the 60s and 70s that I was given.

My dad had a friend who turned out to be a long-time SWL and when I expressed an interest in radio my Dad took me on a visit. That was the first time I heard a decent HF receiver (from memory a Trio of some sort, 70s vintage?). I had a nasty Realistic DX100L at the time which was a nightmare to tune in SSB/CW (but still gave me great enjoyment).

More important than hearing his radio (I remember it had a Partridge Joystick antenna attached, propped up in his bedroom, where the radio sat in pride of place on a small table) was the pile of old (they were old and outdated even then) SWMs to read and learn from.

I saw black and white pictures of simple radio shacks, lots of homemade equipment. Sheds and attics full of “proper” radios. Articles about making and modifying transmitters and receivers. Valves and some transistor stuff.

I got the understanding that Amateur Radio was a technical hobby that required you to build stuff. To understand how it works. To “get your hands dirty” and know which end of a soldering iron to hold.

I treasured the small bundle (SWM was a small-form-factor magazine until the 1990s(?) when it went to a “normal” magazine format) of gems from the hey-day of amateur radio. That period when valves were still king, but new technology was coming. Transistors were common, some small IC projects were appearing in the later years of my little collection.

I moved house several times after that. And on one move I lost my collection of old magazines. Not just this pile of really old SMWs, but also my own collection of SWM from the 1980s onwards, and my collection of SPRAT. I'm sad when I remember them, and miss the opportunity to flick through an old 1960s “wireless” magazine…

Finding https://www.worldradiohistory.com/Short_Wave_UK.htm has been a joy!

I can look back and find articles that I remember reading. I plan to slowly look through them, from time to time and remember both my own nascent period in Amateur Radio, but also a time, earlier than that, which taught me so much about what I hold to be the central core of the Radio Hobby - tinkering with the innards of radios. Modern Black Boxes are not a new thing. There are comments in the old SWMs about how the hobby is changing, from one centered around building & technical matters to one based on appliance operation.

While on the subject of articles, we would like to see more projects on complete transmitters or receivers, aerials and so on. It is our view that, despite a wide-spread belief to the contrary, anyone with an R.A.E. pass should be able to build and get working an SSB transmitter, given that the construction methods and testing are set out in clear detail so that the beginner-constructor can fault-find and test out each part as he completes it, thus making the final setting-up something other than “getting the brute to play.” Editorial Comment, Short Wave Magazine, January 1979

Modern Black Boxes are miracles of design and construction. But poking around inside them with a soldering iron isn't an option for most of us.

I'm embracing some of the spirit of the 1960/70/80 SWM articles, and also keeping up to date with some modern-day developments (e.g Arduinos and SI5351 VFOs) but blending them with older technologies - simple superhet and Direct Conversion receivers and CW transmitters that don't need to be terribly complicated.

The key is not to dismiss everything new, but also not to dismiss the huge back-history of designs and techniques.

And for me it's now to migrate myself back to where I first wanted to be in the hobby. What I first thought the hobby was about. Based on my early brainwashing from those SWMs.

The more I re-read them and the more I ponder what I want to get from my time in the shack, the more I want to melt solder, build little circuits and play radio. With the emphasis on PLAY….

28/07/26 15:12 BST · john

My New 30m CW QRP TX is finished

This new TX is re-using PA strip I tried in the QRSS MEPT I've changed the Arduino code and added a rotary encoder and LCD.

→ Read more...

25/07/26 15:38 BST · john

First QSOs With New TX/RX Project

I'm building the companion TX 30m CW TX for my recently completed 30m phasing RX 30m Phasing Rx

It uses a 4-stage PA strip consisting of

  • Class-A amp : 2N3904
  • Tuned Class-A amp : 2N2222
  • Tuned Class-C amp : BFY51
  • Class-C MOSFET PA : IRF510

→ Read more...

21/07/26 14:54 BST · john

Going All In With QRP?

I've been mulling over my real interests in amateur radio (again) and it's still firmly in the realm of HF and CW. And I've always had more fun playing with simple stuff and QRP.

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19/07/26 11:09 BST · john

Domain Change

I originally had this site under the domain gm4slv.org.uk, but last year, during the phase I was going through of wanting to revert my amateur radio activity back to my original G4SLV callsign, following the OFCOM rule changes, I took out a new domain g4slv.info.

I stopped using gm4slv.org.uk and started using g4slv.info. I also took out the domain g4slv.cloud for my other VPS that I obtained to run gopher and to be a test-bed for a few things that would leave my main wiki/blog/website un-harmed.

I also changed all my Linux/FreeBSD box usernames from gm4slvg4slv

Recently I realized that I preferred using GM4SLV on the air - so much of my radio life has been spent with GM4SLV, and the few people I've got any recent involvement with in radio know me as GM4SLV. I switched back to using GM4SLV as my operational callsign on-air and this week I decided to also revert all my various linux/BSD box usernames to gm4slv as well.

This was a little bit more involved than I thought, when I missed changing my membership to the sudo group on one box and then found I couldn't sudo. I couldn't su to root either, and I'd disabled root ssh logins…. got there in the end though.

That left the domain name for my web/wiki/blog server.

I re-activated the dormant registration for gm4slv.org.uk (nobody had claimed it while it was out of my ownership) and obtained a new SSL certificate for the new domain and pointed its DNS record to the VPS hosting the web/wiki/blog.

This VPS was also the DNS host for g4slv.info so I updated g4slv.info DNS record to point this domain to the other VPS (the gopher one, g4slv.cloud) and installed Apache2 purely to hold an single index.html page. This informs anyone visiting g4slv.info that they should update their bookmarks and redirects to gm4slv.org.uk

Job done.

I'll let g4slv.info expire in due course and stick with gm4slv.org.uk from now on.

16/07/26 09:47 BST · john