Last month there was a brief discussion on PTT dropping out before the
particular message was through sending. I checked the archives and I didn't see
anything resembling a fix, just that several folks had the problem.
I've had the problem for some time and it was sorely aggravated this weekend
during the RTTY Sprint (I guess any problem is aggravated during the sprint). I
use the computer's two serial ports for RTTY to two FT1000mp's. I have a
Quatech 4-port USB to Serial adapter. Two of those ports are the CAT
connections to the radios and in Writelog that is where I key (PTT) the radios.
I suspected this might be causing the dropping PTT but in the first hour
Saturday night I lost the USB to Serial box. I was only running one radio
anyway so I connected CAT to Serial 1 on the computer and Serial 2 became the
RTTY connection.
I still had the problem and it was most aggravating. Has anyone had any luck in
solving the problem?
I'm considering sticking a transisitor in my homebrew RTTY interfaces and
running RTS for PTT via the same comport that I'm using to send RTTY and seeing
if this makes a difference. Has anyone tried that? Or maybe someone who is
doing that anyway and has never experienced the PTT drop problem.
Any ideas would be appreciated.
73,
Bill
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