Are you using a MH-59 mic?
There is a known RFI problem, easily solved using
some toroids.
> Wonder if anyone has experienced this anomaly with the FT-857:
>
> When operating 2m FM at 50 watts the rig will shut down on key-up using hand
> mic. This doesn't happen every transmit cycle but during a round table
> conversation it may occur several times. Sometimes the rig restores to
> normal operation status other times it is left in the off state and I have
> to press the on button to activate the unit.
>
> When I reduced power output to 25 watts there problem is not reproducible.
>
> I've watched the battery voltage which in rec. is about 14.1 but in xmit the
> voltage drops to 12.8. I wonder if the unit is powering down thinking the
> operating voltage is too low?
>
> Thoughts are welcome.
>
> 73, dave wa3gin
--
Thanks! & 73, doc, KD4E
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