On Thu, May 1, 2014 at 9:11 PM, Ben Collins-Sussman
<suss...@red-bean.com> wrote:
> Hello friends,
>
> I've been using my tiny KX3 with a KPA500 and KAT500 for many months now.
> The KX3 only puts out 12 watts, but the KPA500 translates it successfully
> into about 200W. The KPA500 and KAT500 have been connected via the
> official DB15 cable sold by Elecraft, and the KX3 triggers the amp via RCA
> cable into the amp's PA-key connector.
>
> Fast-forward to today: I just received a K3, and I'm really excited to see
> the K3, KPA500, and KAT500 all just "work together" magically. Except
> they're not.
>
> I've connected everything exactly as shown in the KAT500 manual:
>
> - K3's ACC port is connected to the tuner's XCVR port, via the official
> KPAK3AUX cable.
> - The tuner's AMP port is connected to the amp's AUX port, via the
> official E850463 cable.
>
> I'm definitely able to use the K3 and tuner together when the amp is off.
> But when I turn on the amp, there appears to be no communication between
> amp and K3.
>
> - The amp doesn't notice when I change bands on the K3.
> - The amp won't let me change bands at all, even when I push its band
> buttons!
> - When I put the amp into OPER and transmit 15 or 20W from the K3, the
> amp doesn't appear to "key" and amplify. It just shows the exact 20W as
> passing through (on it's 'power' display.)
>
> I've verified that the amp's RADIO option is set to 'K3'.
>
> Does anyone have any ideas?
What happens if you connect the K3 directly to the KPA500 (i.e. remove
the KAT500 from the picture, temporarily) ? If they still don't
cooperate, try the other cable....
73,
~iain / N6ML
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