All,
While Joe's response will eliminate the behavior, I feel that a fuller
explanation is in order.
When a computer boots, it will "exercise" the RS-232 signal lines
including the RTS and DTR signal lines.
If you have your K3 set to do keying or PTT with those lines, you can
expect the K3 to go into transmit while the computer does its boot-up.
So, take your choices - if you have no need for DTR/RTS keying of the
K3, turn the PTT-KEY menu to OFF-OFF as Joe indicated, but if you have
need for computer control of the PTT or Keying of the K3 via the DTR or
RTS signals, then expect that behavior and either place the K3 into TX
TEST or switch to a dummy load while the computer is "doing its
diagnostics" during the boot-up cycle.
73,
Don W3FPR
On 10/12/2014 6:55 PM, Joe Subich, W4TV wrote:
There's also an annoying problem that in valves the comm port. Every
time in turn on my PC, during boot-up, the K3 momentarily transmits.
Is there a way to prevent that or every time I turn on the PC, do I
have to turn off the K3?
Set CONFIG: PTT-KEY -> OFF-OFF and the K3 will no longer respond to
the DTR and/or RTS signals.
73,
... Joe, W4TV
On 2014-10-12 6:47 PM, wa9fvp wrote:
A few months ago I was working on a Visual Basic program to control
my K3. 2
days ago when I went back to do some coding, I had a problem where,
when I
opened the Comm port, the K3 would transmit. I tried sending the RX
software command to the K3 but it didn't help. It was stuck in
transmit! I'm
not sure what happened but after I explored VB6 MSComm Event, I
found that
my code didn't initialize the RTS line. RTSEnable is a VB6 comm
control
that can toggle the RS232, RTS line low or high. The K3 detects the
signal
from the RS232 port and immediately places it in transmit mode. I
added a
line of code and the problem was solved.
There's also an annoying problem that in valves the comm port. Every
time
in turn on my PC, during boot-up, the K3 momentarily transmits. Is
there a
way to prevent that or every time I turn on the PC, do I have to turn
off
the K3?
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
