My R4B crystal calibrator has been acting erratically. Often does not function until the R4B has been on for 20 minutes or so. When I first turn on the calibrator function, I can initially hear it for maybe 100msec, but it does not stay in oscillation. And when it's being persnickety, when it does stay in oscillation, it doesn't sound like a clean sine-wave.
Last night it was acting like this. But just now, it was fine. Came up right off, sounded fine, and was working OK on 15 meters (didn't try 10 meters). I recently did the Hayseed re-capping, so C190 was replaced, and after the recapping it seemed to really help the crystal calibrator function, as it was much worse before the recapping. What else might I check ? I see the calibrator circuitry on the schematic. My scope is still down for repairs. Chuck, K1OM
_______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
