JEAN-FRANCOIS MENARD wrote:
OK Don, thanks for ideas...
I'm looking the ability to receive from both K2 at the same time. But
when one K2 is TX, the receiving K2 will be off automaticaly (antenna
momentary disconnected). When TX finished, both should receive again.
The only manual operation I see is when I want to choose from wich
one I would like to TX with. The antenna switching technic, with
relay I guess, must be automatic.
I'd be tempted to do it in software on a PIC16F84 or similar. You could
have 2 PTTs if you want, or one single PTT and a rig selector switch. In
any case, you want 2 PTT inputs, 2 PTT outputs, 2 ANT relays, and then
your code goes something like this:
# setup
5 connect both ANTs
# main "waiting to TX" loop
10 if PTT1 pressed then goto 100
20 wait a few ms
30 if PTT2 pressed then goto 200
40 wait a few ms
50 goto 10
# TX on RIG1:
100 disconnect ANT2
110 wait a few ms for relay to bounce
120 PTTOUT1 on
130 wait a few ms
140 if PTT1 still pressed then goto 130
150 PTTOUT1 off
160 wait a few ms for rig to stop transmitting
170 connect both ANTs
180 goto 10
# TX on RIG2:
200 similar to 100...180
1 PIC (assuming you're able to program them), couple of relays, clock RC
or crystal, few other bits and bobs.
--
"Nosey" Nick Waterman, Senior Sysadmin.
#include <stddisclaimer> [EMAIL PROTECTED]
What urge will save us now that sex won't.
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
