[Elecraft] K3 FSK RTTY

[Dave G4AON]

Welcome to the K3 world Jim. I have used the one transistor interface
from the MMTTY "help files" built into a "D" plug. It uses 1 x NPN
transistor (any small signal one will do), 2 x resistors and 2 x diodes.
I no longer use the MMTTY program but recall not needing a PTT
connection, only the FSK one (from memory the PTT can be done via serial
cable, the normal one used for  used for programming and logging between
the PC and the K3). I have a multi serial card in my PC so there is no
shortage of proper serial connections.

I no longer use MMTTY, but use Ham Radio Deluxe for sound card data
modes and that program only needs the serial cable and 2 x 3.5mm stereo
cables between sound card and K3 (the audio input on the K3 is "mono"
but the stereo cables work just fine).

Above all else, there is no need to rush out buying interfaces...

73 Dave, G4AON
K3/100 #80
-----------------

I have a K3 on it's way form Aptos that will arrive Tuesday, Sept
8th.....would have here today except for a minor hiccup. But, not
complaining....just a lesson in patience. I've been worrying over the
assembly and operating manual the last few days. I like to contest using
FSK RTTY. Looks like the only way to get the FSK from the computer to
the radio is through the Accessory port on the radio. Looks like there
are several other functions that go through the connector. The manual
seems a little shy on how to gather all the data from apparently several
locations and get it into the connector. Is there a cable available to
do that or is one left to their own to fabricate such a spiderweb thing.
I applaud the built in interface isolation transformers only to find
myself faced with having to engineer and build a break out cable that
connects among several pieces of hardware. Do I have this thing all
wrong or do I need to start contemplating building a breakout cable?

Thanks for any help.

Have a good day and 73.

Jim, W0EM