Hi all
I promised to let you know what happened to my R-4A (13-tube). I made the pcb for the xtal oscillator that was missing (fiberglass, not phenolic , I'm not religious), collected the parts including a 2N3904 as a replacement for the 2N3394. After some experimenting, I ended up making the L4 on a toroid core. I tried the resistor approach, but it wouldn't oscillate on all bands. The toroid works fine. I removed the L4 from a R-4B, and measured it to ca 1.3 uH on the primary winding with my AADE meter. Now I will do a complete adjustment, and possibly change some of the tubes. I probably will have to change the 100kc calibrator crystal, as it does not work at all. So now my T-4X have a companion. Thanks for all help! 73s de Karl LA1CU [email protected] --- No trees were harmed in the sending of this message, but a lot of electrons were terribly inconvinienced.... Do not print this message unnecessarily!
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