Don, Makes sense. I actually went ahead and did the temperature compensation procedure tonight. I let the XG50 warm up while the KX3 was warming up (~30 minutes), then performed the procedure. Cooling down for a bit after, I noticed that the tone now varies by +/- 3 Hz, much better than pre-procedure. Pretty good for using a hotel mini-fridge that only cooled the radio down to 19C. :) Thanks all for the advice.
73, -Mooneer KG6AOV On Fri, Feb 15, 2013 at 5:15 PM, Don Wilhelm <[email protected]> wrote: > Mooneer, > > I would not go so far as to say that. Any stable signal generator needs > some warmup time. For instance my HP8640B is very stable - but only after > about a 2 hour warmup period. Everything inside has to come up to > operating temperature, and it drifts until that occurs. > I would suggest at least a 15 minute warmup for the XG50, a half hour > would be better. At least I would be more comfortable with an assumption > like that even if it is overkill. > > I believe the 8 hour 'burn in' is a time to allow the XG50 crystal some > 'run time'. New crystals will typically exhibit some initial change in > frequency that does not re-occur - think of it similar to the 'break-in' > period for a new engine - you don't have to repeat that every time you > start the car, but you do have to let it warm up before it will deliver > peak performance. > > 73, > Don W3FPR > > > On 2/15/2013 7:53 PM, Mooneer Salem wrote: > >> Assuming the 8 hour run has been done, it sounds like I can turn on the >> XG50 right when I start the procedure. Thanks for the clarification. :) >> >> > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
