On 9/15/2012 6:05 PM, Sebastian, W4AS wrote (regarding drift problems
with XV144 and XV432 transverters):
> <snip> To minimize frequency drift, the manual suggests to always have the
> local oscillator powered, easily accomplished by changing a jumper inside;
> note that requires 12 volts to always be present. <snip>
Since the local oscillator oven draws only minimal current, and since
the units draw very little total current in receive mode, it seems
logical to do as the manuals suggest and leave the units powered during
periods of potential use. Under these circumstances I have had no
problem with drift. I should mention that my XV144 is stacked on my
XV432 with 1" aluminum bar stock used for spacing, and there is no
cooling fan.
John Ragle -- W1ZI
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