Keying Problems

[george fremin iii]

Kevin E. Schmidt writes:
>
>
>
>One possiblility might be that you are using a parallel port and have
>ptt enabled in TR. In that case, the strobe line which is connected to
>the keyer transistor emitter will be pulled low during the whole
>transmission making the keyer transistor more susceptible to rf. If you
>set ptt enable = false with the control-j menu, the strobe line gets
>keyed along with the cw line that is connected to the transistor base.
>If CT keys both lines by default that would explain the difference.
>
>On the other hand, I may be completely wrong.
>
>73 Kevin w9cf
>=-------------------------------------------------------------
>Kevin Schmidt w9cf@ptolemy.la.asu.edu

Kevin is correct. 

I would suggest putting some filtering on the keying lines if you
have problems with RF - a few turns around a torriod should fix you
up - or figure out how to get the rf out of your shack. 

The other soultion is to do as Kevin suggests and turn the 
PTT signal in TR off - this will make the keying interface
act just like the other logging programs.  



-- 

George Fremin III
Austin, Texas C.K.U.    "My theory is that if you can work everything
K5TR                      you can hear on 75, then obviously your're 
512/416-7010              not hearing enough." -- John NT5C
geoiii@bga.com