[Elecraft] K3 Auto antenna switching

[Joe Subich, W4TV]

As far as I know the only use of DIGOUT 0 is to indicate low power
operation for a given transverter band:

  > With KIO3 set to TRN or HF-TRN, the DIGOUT0 line (ACC, pin 6) will
  > output 0 V when low power mode is selected for the current
  > transverter band (CONFIG:XVn PWR). At all other times, DIGOUT0
  > will be floating (Hi-Z).

It would be nice if DIGOUT 0 could be used for other functions (e.g.,
per-band/per-mode like DIGOUT 1, or generate a 500 msec pulse in
response to the ATU TUNE button when the KAT3 is off/not installed)
if the K3 is not used with transverters.

73,

    ... Joe, W4TV


On 8/25/2011 4:13 PM, Guy Olinger K2AV wrote:
> Gotcha.
>
> Is what goes on with DIGOUT0 "firmwired" in the firmware, or is that
> available somehow with some sneaky procedure? TWO signals I could work, one
> of them via software command to K3, would be simply splendiferous and get
> rid of ugly relay logic board.  But I know I'm reaching here...
>
> 73, Guy.
>
> On Thu, Aug 25, 2011 at 3:48 PM, Joe Subich, W4TV<lists at subich.com>  wrote:
>
>>
>> DIGOUT1 - see the "PR6 Owners Manual"
>>
>> 73,
>>
>>    ... Joe, W4TV
>