[WriteLog] TS-850 PTT Problem

[Dennis Mowers]

Using the W5XD MultiKeyer to drive the PTT lines on two Kenwood 850's.

This is a new unit, and the first time it has been used.

Both radios do not operate properly when the PTT is asserted.  The "On 
Air" led comes on, but in split, the radio does not switch to the TX 
VFO.   I called the YV0 a few  times on his freq before I noticed the 
problem.  Thankfully, there were a few "kind" frequency police, who 
mentioned it to me, before I noticed what was going on. 

The PTT line from the radio has a pull up voltage of  about 7.5 volts.  
The MultiKeyer output voltage with PTT asserted is about .7V. 

Perhaps my new MultiKeyer isn't saturating the PTT output switch fully.  
I would expect .2-.3 volts Vce sat on a switch.

Has anyone else had this problem? 

73, Dennis K5YA