[Elecraft] KX3: thermal frequency drift

[Wayne Burdick]

The XG50 will provide very consistent results. It's based on a K3 TCXO. 

But a completely warmed-up, stabilized XG3 might be OK if it's kept well away from the hair-dryer that's used to heat up the rig during the procedure. 

Wayne
N6KR


On Apr 12, 2014, at 2:41 AM, David GM4JJJ <david at gm4jjj.co.uk> wrote:

> 
> 
> From: Eric Swartz - WA6HHQ, Elecraft eric at elecraft.com
> Reply: Eric Swartz - WA6HHQ, Elecraft eric at elecraft.com
> Date: 12 April 2014 at 01:35:33
> To: Edward R Cole kl7uw at acsalaska.net, elecraft at mailman.qth.net elecraft at mailman.qth.net
> Subject:  Re: [Elecraft] KX3: thermal frequency drift  
> 
> The XG3 is perfect for this calibration. Freq is not critical as ling as its 
> close to 50. Our XG50 is actually a little below 50 Mhz. (I think it used the 
> ref oscillator module from the K3.) 
> 
> Eric 
> elecraft.com 
> 
> 
> Eric,
> 
> Curiously the Elecraft procedurehttp://www.elecraft.com/manual/KX3%20Custom%20VFO%20TC%20rev%20A9.pdf says 
> 
> Note that the Elecraft XG3 lacks the necessary stability and is not recommended.  
> 
> 
> 
> 73
> 
> 
> 
> David GM4JJJ
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