K2 frequencyh stability
Posted by
adamkern on
Dec 24, 2006; 1:48pm
URL: http://elecraft.85.s1.nabble.com/K2-frequencyh-stability-tp442294.html
Hello all,
I notice that on K2 #03547 rev B (with KPA100, KDSP2, KSB2,
K160RX and thermistor installed at time of build) the master
frequency drifts as a function of temperature. From an
ambient temp of 65F to max rig temp when the KPA100 fan
kicks in the receiver may drift by 800 Hz. The range is
usually more narrow given the typical temp shift experienced.
My solution has been to calibrate C22 against WWV such that
as the rig warms up, the master frequency set by C22 drifts
towards zero-beat with WWV.
My question is this: how much drift is typical?
Adam, N1KO
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