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Controlling KAT500/KPA500 with Icom 7610

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Buck

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.
--
k4ia, Buck
K3s# 11497
Honor Roll 8B DXCC
EasyWayHamBooks.com
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Lyn WØLEN

Re: Controlling KAT500/KPA500 with Icom 7610

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: [hidden email]
[mailto:[hidden email]] On Behalf Of Buck
Sent: Monday, April 19, 2021 7:42 AM
To: [hidden email]
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.
--
k4ia, Buck
K3s# 11497
Honor Roll 8B DXCC
EasyWayHamBooks.com
______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
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Buck

Re: 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: [hidden email]
> [mailto:[hidden email]] On Behalf Of Buck
> Sent: Monday, April 19, 2021 7:42 AM
> To: [hidden email]
> 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.
>

Ken Winterling

Re: Controlling KAT500/KPA500 with Icom 7610

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 <[hidden email]> 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: [hidden email]
> > [mailto:[hidden email]] On Behalf Of Buck
> > Sent: Monday, April 19, 2021 7:42 AM
> > To: [hidden email]
> > 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.
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Buck

Re: Controlling KAT500/KPA500 with Icom 7610

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 <[hidden email]
> <mailto:[hidden email]>> 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: [hidden email]
> <mailto:[hidden email]>
> > [mailto:[hidden email]
> <mailto:[hidden email]>] On Behalf Of Buck
> > Sent: Monday, April 19, 2021 7:42 AM
> > To: [hidden email] <mailto:[hidden email]>
> > 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.
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> <http://mailman.qth.net/mailman/listinfo/elecraft>
> Help: http://mailman.qth.net/mmfaq.htm
> <http://mailman.qth.net/mmfaq.htm>
> Post: mailto:[hidden email] <mailto:[hidden email]>
>
> This list hosted by: http://www.qsl.net <http://www.qsl.net>
> Please help support this email list: http://www.qsl.net/donate.html
> <http://www.qsl.net/donate.html>
> Message delivered to [hidden email] <mailto:[hidden email]>
>

Ken Winterling

Re: Controlling KAT500/KPA500 with Icom 7610

The cable between the IC-7610 and the KAT500 does two things. First, it
supplies power to the KAT500 so it turns on when the IC-7610 is powered up.
Second, it allows the TUNER button on the IC-7610 to cause the '7610 to
switch to CW mode and transmit an approximate 10W signal. That, in turn,
causes the KAT500 to attempt to find a matching solution to the selected
antenna. You shouldn't need one of those "tuner plugs" as that function is
built into the KAT500 when connected by the AH-4 Molex cable wiring. The
above assumes that you have the KAT500 connected to the IC-7610 ANT1
antenna port.

If your KAT500 is not working that way with the IC-7610 TUNER button then I
would recheck the cable wiring and verify that the KAT500 is connected to
ANT1 on the IC-7610. If those are good it is possible there is a problem
with the KAT500.

Good luck!

Ken
WA2LBI

On Mon, Apr 19, 2021 at 3:06 PM Buck <[hidden email]> 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 <[hidden email]
> > <mailto:[hidden email]>> 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: [hidden email]
> > <mailto:[hidden email]>
> > > [mailto:[hidden email]
> > <mailto:[hidden email]>] On Behalf Of Buck
> > > Sent: Monday, April 19, 2021 7:42 AM
> > > To: [hidden email] <mailto:[hidden email]>
> > > 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.
> > >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > <http://mailman.qth.net/mailman/listinfo/elecraft>
> > Help: http://mailman.qth.net/mmfaq.htm
> > <http://mailman.qth.net/mmfaq.htm>
> > Post: mailto:[hidden email] <mailto:
> [hidden email]>
> >
> > This list hosted by: http://www.qsl.net <http://www.qsl.net>
> > Please help support this email list: http://www.qsl.net/donate.html
> > <http://www.qsl.net/donate.html>
> > Message delivered to [hidden email] <mailto:[hidden email]>
> >
>

kd4iz

Re: Controlling KAT500/KPA500 with Icom 7610

In reply to this post by Buck

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: [hidden email] <[hidden email]> On
Behalf Of Buck
Sent: Monday, April 19, 2021 14:04
To: [hidden email]; [hidden email]
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: [hidden email]
> [mailto:[hidden email]] On Behalf Of Buck
> Sent: Monday, April 19, 2021 7:42 AM
> To: [hidden email]
> 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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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html Message
delivered to [hidden email]

______________________________________________________________
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Hal Massey

Re: Controlling KAT500/KPA500 with Icom 7610

In reply to this post by Buck

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 <[hidden email]> 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 <[hidden email] <mailto:[hidden email]>> 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: [hidden email]
>> <mailto:[hidden email]>
>> > [mailto:[hidden email]
>> <mailto:[hidden email]>] On Behalf Of Buck
>> > Sent: Monday, April 19, 2021 7:42 AM
>> > To: [hidden email] <mailto:[hidden email]>
>> > 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.
>> >
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> <http://mailman.qth.net/mailman/listinfo/elecraft>
>> Help: http://mailman.qth.net/mmfaq.htm
>> <http://mailman.qth.net/mmfaq.htm>
>> Post: mailto:[hidden email] <mailto:[hidden email]>
>> This list hosted by: http://www.qsl.net <http://www.qsl.net>
>> Please help support this email list: http://www.qsl.net/donate.html
>> <http://www.qsl.net/donate.html>
>> Message delivered to [hidden email] <mailto:[hidden email]>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Buck

Re: Controlling KAT500/KPA500 with Icom 7610

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 <[hidden email]> 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 <[hidden email] <mailto:[hidden email]>> 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: [hidden email]
>>> <mailto:[hidden email]>
>>> > [mailto:[hidden email]
>>> <mailto:[hidden email]>] On Behalf Of Buck
>>> > Sent: Monday, April 19, 2021 7:42 AM
>>> > To: [hidden email] <mailto:[hidden email]>
>>> > 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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