VE6TI wrote:
> I was expecting to see a grid current of 0 ma with the operate-
> standby switch in the "operate position", exciter set to "on", which
> grounds the FL2100B antenna relay, but provides no drive from the
> exciter. Instead the meter indicted 160 ma of current. I have
> checked this current with two different meters. One a 1 ma meter of
> internal resistance 86 ohms shunted with .44 ohms and the other with
> a digital multi-meter. The latter showed 158.5 ma. I wonder where
> this current is coming from?
>
> Suspecting something else was wrong I recorded the following voltages:
> Plate voltage: 2300 volts.
> Grid RFC to ground (operate-standby switch in operate) with exciter
> on standby: -18.4 volts.
> Grid RFC to ground (operate-standby switch in operate) with exciter
> on send, but not keyed: -2.7 volts.
2.7V and 160mA implies a resistance of 16.8 ohms - at first sight it
looks like the current is flowing equally through both 33R resistors.
Have you checked all the decoupling caps?
Steve
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