[Elecraft] Controlling KAT500/KPA500 with Icom 7610

[kd4iz at frawg.org]

Buck,

I have a similar setup with an IC-7300 and my KAT500/KPA500 combo. It does
not auto band change before key up. It does change on a quick, low power
tune however. IIRC I made a not so recent inquiry to Elecraft yielded the
explanation that my experience was correct. If I can find the message I will
post the text. 

As Ken WA2LBI  indicated in his message, what I did subsequently was to
jettison the "ICOM AH4 cable" set up (KAT500 Owners Manual, pg 8 to 10) and
just used a generic Analog radio configuration. The frequency sensing
capabilities of the ATU and amp do the job fast and efficiently. Currently I
use a 4-way RCA audio switch to select the keyline sig from one of the HF
radios I use and a remote antenna/rig selector (MFJ 4724) to route the
selected rig to the amp. The KAT500 remembers my preferred HF antenna for
the band I have chosen to use so the antenna side of the MFJ is used to
switch other coaxial feeds. 

Jack Spitznagel - KD4IZ

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
Behalf Of Buck
Sent: Monday, April 19, 2021 14:04
To: Lyn at LNAINC.com; elecraft at mailman.qth.net
Subject: Re: [Elecraft] Controlling KAT500/KPA500 with Icom 7610

I made up the cable from the Molex to the TUNE on the KAT500 as described
and have checked continuity from end to end.  All OK.

I have the SEND from the 7610 connected to the PTT RLY on the KAT500.

When I change bands, nothing happens.  Is there another setting I need to
change in the 7610?

Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 4/19/2021 10:35 AM, Lyn Norstad wrote:
> Buck -
> 
> The KAT500 Rev D1 Manual, pages 13, 14 and 15 cover the Icom connections.
> 
> The "AH4" cable (the one you're describing) powers the KAT500 and 
> controls the "Tune" function.  If yours isn't doing anything, the 
> cable is probably defective.
> 
> What else do you have connected?
> 
> 73
> Lyn, W0LEN
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Buck
> Sent: Monday, April 19, 2021 7:42 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] Controlling KAT500/KPA500 with Icom 7610
> 
> Anyone who has succeeded, I could use some help.  The connection from 
> the 7610 molex antenna tuner jack to the "Icom in" jack on the KSAT500 
> doesn't do anything.
> 
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