[WriteLog] Intermittent PTT Dropout
cfmorris at bellsouth.net
Tue Jan 10 00:38:02 EST 2006
Mike, what are you using to generate PTT? I had this problem with Comm PTT
enabled in WL, but havent had it since with serial port PTT. For the
contest rigs at the camp, I built the 3 separate function breakout box (at
home I built just FSK into the shell) using a Radio Shack box and little
piece of breadboard with both going to RCA jacks. Now I have PTT, CW and
FSK on one serial port, and havent had the same PTT problem since.
A lot of times I had a problem with PTT hanging because of RF interfering
with the CAT signal to tell the rig to unkey. I just lived with the
intermittent key/unkey and noticed that it went away when I changed both
rigs to serial PTT.
> Date: Mon, 09 Jan 2006 10:10:35 -0500
> From: Mike <k4gmh at arrl.net>
> Subject: [WriteLog] Intermittent PTT Dropout
> To: writelog at contesting.com
> Message-ID: <22.214.171.124.2.20060109095555.00e6a6f0 at arrl.net>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> Had a problem with PTT dropping out every now and then. Obviously,
> noticed it most while CQing.
> V10.55D is used but believe the problem has been around for a couple
> of prior versions.
> Using homemade (single transistor) interface and a 800 MHz computer,
> with ~600 Mb RAM, running XP Home.
> Noticed that sometimes, after the computer drops PTT while sending a
> message, the computer would reactivate the PTT before the end of the
> message and then repeat the message. Other times the message would
> end without the computer generated repeat message. Also, if the
> message was manually started after PTT dropout, but before the end of
> the message, the computer would reactivate PTT and the rest of the
> message would be sent as if PTT had not been dropped. The manually
> started message would be sent immediately at the end of the first
> message. The screen displays all of the first message, even the
> section during PTT dropout. If the dropped PTT occurred during an
> auto-CQ and not manually restarted, the next CQ would be started at
> the correct time and the PTT would not drop-out in the second message.
> Has others seen this problem? Any remedies?
> Mike, K4GMH
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