See below...
> On Sep 22, 2020, at 1:10 PM, Eric Norris wrote:
>
> Dear Gang:
>
> I have several old auxbus cables, the type that is about 3/8" thick, and
> has a bend radius of about 1/4 mile. Several pins are missing. The cable
> clamping thumbscrews are not secured, and can float free in a zero-G
> environment.
>
> I have other AUXBUS cables that are thin, have nice ergo thumbscrews, but
> are not missing any pins.
>
> 1) How many types of AUXBUS cables are there?
No idea. I would guess two or three. At one point we switched to a full cable
with adapters that disconnected the pertinent pins.
> B) Can the AUXBUS cable that has all of it's pins be used between a K3 and
> an elecraft amplifier? Between an elecraft transverter cable and AUXBUS
> (assuming the specially-made-per-the-XV manual cable is in between) port
> via a gazillion all straight-wired Y adapters?
No, definitely not. Take a look at the KPAK3AUX K3 Cable diagram near the back
of the KPA500 manual - it is on page 45 of the E1 version. It shows that the
following pins are not connected: 1, 4, 6, 7, 8. Of these pins 7 and 8 must NOT
be connected between the KPA500 and the K3. The others listed are not used by
the KPA.
Also, Pin 11 is the INHIBIT input to the KPA, while it is DIGOUT1 on the K3. If
you use DIGOUT1 for some function (like enabling an external Preamp like the
PR6), be sure that the KPA’s INHIBIT setting is turned off.
That thick cable with missing pins can be very useful. So can the others, if
you make sure the appropriate pins do not connect to the amplifiers. A small
straight-though adapter with the appropriate pins broken off can be quite
helpful here.
73!
Jack, W6FB
>
> I think I knew this once but no more.
>
> Thanks.
>
> 73 Eric WD6DBM
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