[Yaesu] FT-857

[WA3GIN in Alex. City, VA]

Hi Folks,

 

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