[Elecraft] KRC2/K3

[iain macdonnell - N6ML]

Hi Hank,

The problem of the K3 locking up when power is removed from the KRC2
started around the time KPA500 support was added to the K3 firmware.
It's "normal" in that it's "not just you", if that helps any...

73,

    ~iain / N6ML


On Sun, Aug 11, 2013 at 8:57 PM, Pfizenmayer <pfizenmayer at q.com> wrote:
> I have a KRC2 using the AUX bus which works OK , switching the RATPAK 5 6 remote box and showing the LED indicators of the RATPAK switch box.
>
>
> I would like to be able to turn off the KRC2 to allow manual switching of the antennas - I am feeding 12vdc to the SOURCE driver terminal strip J5 in the KRC2 and if I turn off that supply , there is a  diode D4 that feeds 12 vdc from the normal DC input jack on the KRC2 to the SOURCE driver Vbb so even if I turn the other 12v supply off , it stays latched on the last band .
>
> If I remove the 12 vdc feeding the microprocessor , but leave the AUX BUSS on ACC connected , the K3 freezes and will not reboot .If I remove the conection between the KRC2 and the ACC connector , then it will reboot and is normal.
>
> Is this normal AUX bus behaviour ? If so looks like I will either clip D4 - or ressurect my relay switch box to completely isolate the 7 wires from either KRC2 or the RATPAK manual switch to the remote switch box.
>
> Hank K7HP
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