SA2CLC radio stuff

 If you have happened to visit my profile over at Thingiverse, you can see that I havea  few designs concerning radio and related stuff, and of course, I have only published a fraction of what have come out from the printer over the years. I really cannot imagine being without a printer and the possibility to make anything that I need. For intstance, I needed an adapter for a tube socket (German Y8G) to octal. I rummaged through my bins, and found a socket, and also an octal base, from a smashed 6L6. Now, I wanted it som have some stability joining these two, so I designed a piece that mounts to the Y8G socket, and slides into the octal plug. Neat. I use Fusion 360 when designing, and an Creality Ender 3 to print. I added holes that line up with the pins in the octal plug, that way, I can first solder wires to  the socket, guide the wires through the holes, install the socket to the adapter, and then  slide everything into the plug, letting the wire ends protrude thr...

  EM85 under test. A perfect 100% working specimen So, I bought a large amount of tubes from a gentleman, who had been restoring radios for more than 30 years. Many of the boxes was of little interest for me. Tv tubes and pure "bc radio" tubes, but there was a large lot of magic eye tubes, you know, the green glowing things, that was made to aid in tuning in to stations back in the analog VFO era. Function Magic eyes, or indicators, work by directing a stream of electrons onto a phosphorus coated surface.  The phosphor starts to glow green when hit by the electrons, and we can control the way they hit, by inserting a negatively charged element in the way of the electrons or beside the electron stream. By varying the amount of negative voltage, the shape of the beam varies. Different types I mostly had EM84´s, which is a "closing" bar. Used in fm receivers and tape decks among other things. The bar is projected vertical on the side of the tube. I had a few EM80´s and...