Radio Society of Greater Bixby

Mike KI5YX: Really? That old? Tom KJ5NMH: Yeah, we weren’t even teenagers yet when this one was new. 1958. Tube finals, a 6146 driver and 6550 final, both laid down horizontal in the aluminum heat sink in back. International doesn’t make crystals any more so I added a freq synthsizer, you can see it under my fingers at the top, and a PL tone generator too. It’s also there, but so small you can’t see it in the picture. Ten (10) channels now. Big problem is there’s no hi/low power switch so it’s a hundred (110 W) and ten Watts out all the time. It’ll smoke your average mobile antenna. I got another one from the 60s that’s all transistor. Put a freq synthesizer in it too, but totally different than this one. Has a two wire serial input to the crystal socket from outside with a digital freq display.

Next mtg is 4th Thurs at Scott’s hamburgers in downtown Bixby. More on how antennas work (input impedances) and what controls gain (G5RV and OCFed not included).