[WriteLog] W5XD keyer question--PTT outputs not saturating.

[Dennis Mowers]

My XD Keyer is about 2 months old.  It has the PS2501-2  opto isolator 
in the PTT circuits. 

The opto diode series resistor is 1.2K in the Keyer.  I paralled a 330 
ohm with the existing 1.2K's, and the PTT now works on both my TS-850's.

The spec sheet says absolute max diode current is 80 Ma, so it looks 
like 20Ma or so is safe, and drives the switch hard enough now.

Dennis K5YA

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