Nice work Eddy. I do my tests a little differently, I look at "overall" stability by zero beating WWV.
Regardless, my early T-4X (5KHz markings) is also just about 1.2KHz. But my slightly newer R-4A (13 tube, but 25KHz markings and vernier Preselector) is worse at just about 1.5KHz. IIRC, there is a drift spec. somewhere of... 1.5KHz, if so, WE are in spec :) And, like you, after a GOOD warmup, they are pretty darn stable!! I have also noted that the drift seems worse at the high end of the dial. 73, Gary WB6OGD ----- Original Message ----- From: Eddy Swynar <deswy...@xplornet.ca> Now---how about all those other T-4X rigs that are out there in general circulation...? Are the results of YOUR stability tests similar to mine here...? ~73~ de Eddy VE3CUI - VE3XZ
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