Not many power stages are turned off in the receiver, and 2.1 amps isn't
far out of line for several transmitter stages with idling current in
the driver and PA stages, needed for linearity. But page 3-24 of the on
line manual says the driver collector idling current should be between 3
and 8 ma and the PA idling current should be 1/2 amp, and total current
under 1.5 amps. So maybe the bias needs adjusting by the procedures on
that manual page.
73, Jerry, K0CQ
On 2/24/2011 8:55 PM, Greg S wrote:
> S/N's 01612 and 01895 here .... with the 580 in front. I am using one I
> recently bought with "bad" finals. Strange... I decided to try it on the air
> real quick before I sold it (telling buyer the finals are bad), and lo and
> behold, it puts out near 100W ...even on 10M. I think that's OK. I usually
> run 30W, and turn on the Solid State amp if more is needed. Only thing that
> makes me wonder a bit is, she draws just under 1 ampere when in receive with
> signal, and volume at listening level, and it jumps to about 2.1 amperes when
> PTT is engaged in SSB, with no modulation. That seems a little high?? There
> is no output showing on the watt meter, so ... hmmm... maybe that's about
> normal, and they have many more QSO's in them!
>
> Great list, guys and gals.
>
> 73-
> Greg Schippers, KC8HXO
>
>
> Cogito Ergo Armatum Sum
>
>
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