Radio and rails...

M0RVB

Thunderpole T-X handheld CB radio

I actually spotted this little CB handheld via one of M0XFB's Tiktok videos. CB is not particularly active round here but even so I felt a handheld bit would still make a good addition to my kit. It will manage the full 4W output and has both the UK FM, and EU FM / AM ranges. https://www.thunderpole.co.uk/thunderpole-t-x-overview.html explains it better than me. It has the ubiquitous rubber duck type antenna but the antenna connector usefully is a BNC. No idea what the range will be with that antenna but it's certainly a handy little thing.

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M0RVB

Meshtastic

I just got two Lily LORA modules with Meshtastic firmware loaded, one on 433MHz and one on 868MHz. Both arrived with old firmware but that is no issue as the firmware is readily available, and anyway the documentation seems to recommend that loading the latest firmware is the first thing to do. There is a Meshtastic app for the iPhone and Mac (others available) with features replicated between them.  However, my thoughts of updating fell at the first hurdle. There are three options, use a web flasher, a CLI version or use a serial adapter. The web flasher requires Chrome or Edge and all my PC kit is in bits because of the leaky pipe. The Mac does not have Chrome nor is Chrome getting anywhere near it! There is a CLI option which requires brew and python3 / pip all of which need installing, leaving me to wonder if I (a) install all that on the Mac or (b) fettle the Windows PC together sufficiently to use it.  So, Windows PC on the floor, monitor resting against it (the monitor lives on a 4x stand so has no feet attached), Edge loaded and the 433MHz unit plugged in… finally…

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M0RVB

10MHz OXCO

I recently acquired a 10Ghz / 144MHz transverter which should get me a little closer to the band. I do still have a kit to build but having this means I can eventually test that as well. It needs a 10MHz reference input and I was recommended one from an eBay seller in China. The unit arrived today and having had it sat on a 'scope and counter for several hours it does seem to produce a solid 10Mhz signal at a nice sine wave (it has TTL output too). Not bad for £12.

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M0RVB

Shack dismantling

Looks like I am out of action for a few days. We noticed a bulge in the kitchen ceiling which is directly under the shack. There are two pipes that run across under the floor for hot and cold water to the taps and down from the hot water cylinder to the rest of the house. Yes, you guessed it, right under my desk. So, all the radios, screens, Mac and PCs, audio stuff and all cabling out and desk out. On lifting the carpet the floorboard I needed to lift ran right across the room, and right under the test bench! So, all the equipment had to move, including the allegedly portable spectrum analyser and the teleprinter. Fortunately GB7RVB and all the network gear is on shelving attached to the wall so that can stay. And there is was, one leaking lead to copper joint. Far too late to go and get the bits to fix it… and searching for the parts by smartphone is not amusing. Grumble.

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M0RVB

The end of collecting

Seeing as I closed my valve collection website down and removed much of my personal stuff before it got archived (valvecollector.uk) I suppose I had better keep my story somewhere… I started collecting when I was just a kid but only seriously from about 1999 when I set up my first collection website, initially on a bit of webspace at work. From there it moved about a few times, first to some commercial webspace provided free by a friend who owned an ISP, then to our house, then past three other ISPs to a dedicated physical server which I rented, and then on to a VPS where it stayed until closed down and archived at the beginning of 2024. I used to collect just about everything but it got out of hand when the collection reached 3,000 types,some of which were huge beasts. From then I settled on just CV types and almost all of the non-CV valves - about 1,500 went to the National Valve Museum, which has a website almost as old as my own. I first became interested in valves, and electronics in general when I was about 8. My grandad drew a sine wave on the wall to try…

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