[Elecraft] KAT100 and INFO080 problem

[Don Wilhelm]

Rolf,

The answer may be an easy one - Is the power supply for the KAT100 switched
on before turning the K2 power on?  If not, it should be.

You apparently have the KAT100-2 if it contains the connector for the flat
ribbon cable connector, that is for connecting the KPA100 when mounting the
KPA100 and KAT100 together in the EC2 enclosure.  Connect the KAT100 and the
K2 through the cable shown in the KAT100 manual (from KIO2 to the KPA100).
The connecting cable should be as short as possible, although lengths up to
60cm should work.

73,
Don W3FPR

> -----Original Message-----
>
> Hello friends,
>
> i recently build my k2#5426 and it works amazingly fine. But now i run
> into some trouble with my external tuner: when connected, i get this
> info080 message during power-up and the KAT100 wont start. Inside my K2
> the KAF, the NB, a kio and the ssb-adapter are installed and work
> perfectly. Firmware should be the last possible release, i got my kits
> just three weeks ago.
>
> Of course I searched the eMail list but didnt find really a solution to
> my problem.
>
> What i already did: i checked both my K2 and my KAT100 again carefully,
> all ICs etc are correct installed; i tried to connect them directly via
> a short 10pin flat-ribbon cable between P4/control board and P4/KAT100
> rf board; i checked the AUX-BUS connection between the K2 MCU and the
> KAT100 MCU. When I am disconnecting the KAT everything works fine again;
> when i remove the MCU from its socket in the KAT no error appears. -So I
> am thinking that the problem must be somewhere in the auxbus
> communication between the rig and the tuner, but because of the fact
> that the K2 alone runs flawless with all the modules installed i would
> rather search the bug inside the kat.
>
> Maybe anyone here outside does have an idea whereand how i should
> proceed with my troubleshooting? Might it be possible that the MCU
> inside the tuner could be defective and i should order a replacement?
> -Any hints/ideas are warmly appreciated,
>
> greets from cologne,
> --
> Gruss! & 73 de Rolf Dohmen, DL1KJ
>