I don't know what the correct signals are. Haven't been able to find
that data
k4ia, Buck
K3s# 11497
Honor Roll 8B DXCC
EasyWayHamBooks.com
On 4/19/2021 5:49 PM, Hal Massey wrote:
Hi Buck,
I appreciate the continuity tests you did on your cable. Can you functionally
test the cable? With the cable connected to the 7610 are the correct signals at
the cable outputs?
Regards
-Hal / WB6NNR
On Apr 19, 2021, at 1:06 PM, Buck <[email protected]> wrote:
Auto-sense works. I just don't understand why Icom/Elecraft would even suggest
hooking up the molex connector to the KAT500 if it doesn't do anything. It is
a waste of time.
I got the W2GNY plug to fool the 7610 into transmitting as 10 signal and it
works. I guess I will stick with that.
Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com
On 4/19/2021 2:31 PM, Ken Winterling wrote:
Buck,
I have had the IC-7610 and KAT500/KPA500 for almost three years and they are a very nice
pair (or trio..). The IC-7610 doesn't "control" the KAT500 per se. Changing
bands/frequencies on the IC-7610 doesn't cause any response from the KAT500. Only when
the IC-7610 transmits does the tuner detect (sense) the RF and then adjust the capacitors
and inductors to match to the current antenna. An Elecraft transceiver, OTOH, does
communicate with the KAT500 (and KPA500) and changes bands/frequencies/antenna ports as
the bands and frequencies are changed.
The KPA500 responds the same way and changes bands by sensing transmit RF. You can build
a "band data" cable to interface the IC-7620 to the KP500 and it will, with
restrictions, follow the band selected by the IC-7610. The restriction is that Icom's
band data voltages do not support the WARC bands. As a result, both 24 mHz and 28 mHz
select 28mHz; both 18 mHz and 21 mHz select 21mHz. So, for all bands except WARC, the
KPA500 will follow band selections made on the IC-7610 (or almost any other Icom such as
the IC-7300, etc.).
I can send you a diagram of the band data cable if you would like. It is only marginally
useful and most ops of non Elecraft gear seem to just let the KPA500 (and KAT500) RF
sense the transmitted RF to make necessary selections. Be sure to read the KAT500 manual
section regarding "training" your tuner.
GL!
Ken
WA2LBI
On Mon, Apr 19, 2021 at 2:05 PM Buck <[email protected]
<mailto:[email protected]>> wrote:
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: [email protected]
<mailto:[email protected]>
> [mailto:[email protected]
<mailto:[email protected]>] On Behalf Of Buck
> Sent: Monday, April 19, 2021 7:42 AM
> To: [email protected] <mailto:[email protected]>
> 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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