[Elecraft] K3 - Asserting DTR/RTS for PTT

[Don Wilhelm]

Mike,

You are apparently setting PTT with the DTR signal OK,

But, how are you "sending a RTTY string"?  If you are using AFSK A, the 
"RTTY string" must come into the K3 as audio (likely from a soundcard) - 
the easiest is to use the K3 LINE IN - plug a stereo cable between the 
soundcard line out and the K3 line in..  You control the LINE OUT level 
on the soundcard AND the LINE-IN level on the K3 to produce 4 bars on 
the ALC display - use TX TEST to set the levels and you will not bother 
anyone with a transmitted signal..

73,
Don W3FPR

Mike wrote:
> Apparently I don't understand the use of DTR/RTS for PTT.
>
> If I assert DTR, the red xmit LED comes on, but when I send an RTTY 
> string to the rig, there is no output. DTR is turned on in CONFIG. I'm 
> in DATA mode and set for AFSK A. What I'm after is a way to avoid VOX 
> with CW ( Yeah I know for CW I need to be in CW mode), RTTY, and PSK. Is 
> there a way?
>
> 73, Mike NF4L
>   
>