[TenTec] QSK-5 & Omni VI+ ??

[Ken Brown]

Hi Gert,

You said: "I do have a QSK-5 in my AL1200x which worked fine so far with 
my Kenwood TS-870S and the Elecraft K2 transceivers.Recently I got a 
TenTec Omni VI+ and I do have problems interfacing the QSK-5 by using 
the Omni Vi+ handshaking TX OUT/TX EN. Can somebody give me a hint how 
to do it correctly?"

I have no data on the QSK-5 or the AL1200x, so I cannot tell you what it 
wants for a keying input or what it provides for a keying output. I do 
have an Omni VI and a manual for it, so I can tell you what it does.

The Omni VI has an open collector NPN transistor for it's TX OUT switch. 
The transistor is turned ON at key down, and will pull a positive 
voltage (from your QSK capable amplifier) to near ground potential at 
key down. The keying input to the Omni VI  needs to be something similar 
to that. The  +REG voltage of 8.5 volts that appears at the TX EN input 
of the Omni VI needs to be pulled low by your QSK capable amplifier in 
order to key the Omni VI.

Is the QSK-5 "strappable" for various voltage levels, polarities and 
logical senses? If so you need to set it up to work with what I 
described above.

DE N6KB