Paul,
I believe you may be trying to address too many issues at once. Take
then one at a time.
As far as the speaker goes, I suggest the safest solution is to re-wire
the plug to a stereo plug using only the tip and the shell.
Look st the plug - if the plug does not have a ring on it, then it is
not a stereo plug.
The speakers question does not have any direct relationship with the
MMTTY input.
73,
Don W3FPR
On 12/6/2012 8:15 PM, Paul M Dunphy wrote:
Does anyone know if the warning mentioned here in relation an external
speaker and a mono speaker applies to the K3's line out (which is also
stereo):
http://www.elecraft.com/manual/E740107E%20K3%20Owner%27s%20man%20errata%20D10-1.pdf
The reason I ask is I have an old Buxcom Rascal circa 2007-2008
that I used for RTTY and PSK on my ICOM PRO3 with great success . . .
was thinking of just getting the K3 cable (Part 5DK3) and using it
with MMTTY as I had been doing.
The concern is the 1/8" plugs on the 5DK3 look to be mono for both
audio in and audio out on it's schematic diagram.
http://www.packetradio.com/catalog/index.php?main_page=product_info&products_id=2514
It's hard to see because the diagram is so small, but I am 99%
sure they are 1/8" mono plugs.
I want to do FSK, not AFSK. Otherwise I'd just use a couple of
stereo 1/8" inch cables to the computer. Seeing as the Buxcom Rascal
and 5DK3 combo will key the RCA PTT as well as handle the TX and RX
audio, I was going to go that route. Just switch the old ICOM cable
with the 5DK3. Has anyone done this? Seems like a simple way . .. on
the PRO3 I used this setup for RTTY, PSK, JT65, etc. I also read that
you shouldn't try to key the PTT line using the DB9 serial
communications port, and since the Rascal is already working with
MMTTY . . .
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