K3 - Asserting DTR/RTS for PTT

[Mike Reublin]

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

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[Don Wilhelm-4]

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
>  
>

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