[Elecraft] K3, KPA500, KAT500 interactiions

[iain macdonnell - N6ML]

In the standard configuration, the KAT500 does not explicitly inhibit
the KPA500 - rather it interrupts the keying line (by opening relay
contacts). My setup is remote, so I can't confirm this, but the
underscore should not be displayed in this case.

This does require keying to be routed through the KAT500, using the
ACC cables, and no other keying path should be in place (e.g. RCA
direct from K3 to KPA500).

73,

    ~iain / N6ML


On Sat, Mar 16, 2013 at 7:53 PM, Ron D'Eau Claire <ron at cobi.biz> wrote:
> Bill, it should not fault.
>
> When the KAT500 it is tuning, do you see on the KPA500 amplifier front panel
> the asterisk change to an underscore?  If the asterisk stays visible, the
> amplifier is not being inhibited for some reason.
>
> What is the SWR reported by the KAT500 after tuning? If it is not low
> enough, the KPA500 logic may trigger a fault due to excessive reflected
> power.
>
> Do you have the latest firmware in both the KAT500 and KPA500? IIRC, there
> was some tinkering with the timing of the functions that may have been to
> avoid spurious faults. I recommend making sure you are running the latest.
>
> 73 Ron AC7AC
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bill Wiehe
> Sent: Saturday, March 16, 2013 7:31 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K3, KPA500, KAT500 interactiions
>
> I must be having a senior moment so bear with me. If the KPA500 is "not
> keyed" (K6KR) and/or it is "inhibited" (AC7AC) while the KAT500 is tuning,
> why am I getting a "fault" that requires a manual reset?
> BTW I am using the cabling as described in figure 1 on page 4 in the
> KAT500 owners manual with the correct DB15 cables and, in the interest of
> full disclosure, I do use the KPAK3AUX Y cable at the K3 ACC port.
> Bill - W0BBI
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