[Elecraft] TX Inhibit options

Bruce Beford bruce.beford at myfairpoint.net
Wed Jun 29 07:58:06 EDT 2011


Seems to me this -could- be done, but would require some modifications to
your sequencer system. 
 
Using the TX INH input (pin 7 or AUX connector on the K3, set TX INH to ON).
You would need an output from your sequencer that stays low until TX
permission is desired. This operation would be dependant on the band the K3
is on, so you would need to add logic to decode the Band0-3 outputs, and set
CONFIG:KIO3 to TRN. 
 
Alternatively, you could use a KRC2 to access the auxbus data out to decode
the TRN band.  Again, added logic would activate the inhibit function only
when 2M is selected, based on the output of the KRC2.
 
This is all based on reading the signal descriptions in the K3 manual. I
have not tried it. I am sure there are probably other ways to accomplish
this.
 
Good luck,
Bruce, N1RX
 
> Question then - is there a way of disabling/inhibiting the TX button/ mic
> socket ptt on the rig just on 2m so that on 2m you can only instigate TX
via
> the back panel PTT in line?
> Help appreciated!
> Roger Banks
> GW4WND 
 

 



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