Re: [Elecraft] KAT500 beta 2.04

[Mike Flowers]

Hi Andy,

Tried the new version of the Utility.   'Invalid handle' error when 'Copy
New Files from Elecraft' is clicked.

Unzipped the new beta firmware into my beta directory, and when I tried
loading the beta firmware I got 'Cannot start a busy state machine' error.

I'll stick with v 01.75 for now ... 

- 73 and good DX de Mike, K6MKF, NCDXC Vice-President 2021-2022


> -Original Message-
> From: elecraft-boun...@mailman.qth.net  boun...@mailman.qth.net> On Behalf Of Andy Durbin
> Sent: Wednesday, October 06, 2021 08:28
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] KAT500 beta 2.04
> 
>
https://elecraft.com/pages/kat500-fully-automatic-tuner-firmware-and-utility
> 
> New KAT500 firmware and also a new Utility version.   Quite a few issues
fixed
> that are not mentioned in the release notes.
> 
> I'd like to thank Dick, K6KR, for his patience as we worked though my
defect
> reports and enhancement suggestions.  I learned a lot from our discussions
as
> this firmware update slowly matured.
> 
> All of my alpha testing was with a Kenwood TS-590S.  Hopefully owners of
> other rigs will try this beta and report any issues.
> 
> 73,
> Andy, k3wyc
> __
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[Elecraft] KAT500 beta 2.04

[Andy Durbin]

https://elecraft.com/pages/kat500-fully-automatic-tuner-firmware-and-utility

New KAT500 firmware and also a new Utility version.   Quite a few issues fixed 
that are not mentioned in the release notes.

I'd like to thank Dick, K6KR, for his patience as we worked though my defect 
reports and enhancement suggestions.  I learned a lot from our discussions as 
this firmware update slowly matured.

All of my alpha testing was with a Kenwood TS-590S.  Hopefully owners of other 
rigs will try this beta and report any issues.

73,
Andy, k3wyc
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[Elecraft] KAT500 firmware Beta 02.04, KAT500 Utility, and programming reference updated.

[Dick Dievendorff]

We have just placed KAT500 firmware Beta version 02.04 and an updated KAT500 
Utility and KAT500 Serial Command reference on our web site.

Firmware   & Software – Elecraft

Please send comments to supp...@elecraft.com   
with KAT500 in the subject line.

Thanks to Andy, K3WYC, for his assistance during this effort.

73 de Dick, K6KR

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Re: [Elecraft] KAT500 - does it earth antenna connections

[Andy Durbin]

"You don't need to manually choose an antenna on startup. It remembers what
was last used on each band (assuming you are using an Elecraft or Kenwood
rig with it). I think it will still remember the last used even in a dumb
situation without knowledge from the radio; it just needs the radio support
to have "per-band" memory."

No radio support is needed for antenna per-band memory.  All the KAT500 needs 
to know is the TX frequency.  It then decides which antenna to select based on 
"band" and the antenna preferences defined by the KAT500 PC Utility.

A weakness of this design is that, if only RF sensing is used for frequency 
determination, the KAT500 may fault due to a mismatched load before the 
appropriate antenna has been selected for the new band.

Antenna selection can be performed by serial command but, even though my 
controller is capable of that, I have seen no reason to replicate the antenna 
selection logic already built into the KAT500.   There is a caveat though -  
the internal antenna selection logic doesn't work correctly when KAT500 is in 
BYP mode.  (The workaround for that defect is to never use BYP mode.  MAN mode 
with Byp active is electrically the same and antenna selection does work 
correctly in that configuration).

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 - does it earth antenna connections

[David Aslin G3WGN]

So if I have one antenna port which no longer seems to function (port 2) the 
GDT may be a good suspect?
Suggestions for troubleshooting invited
73, David G3WGN M6O WJ6O



Sent from my Galaxy

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[Elecraft] KAT500 - does it earth antenna connections

[Bob McGraw]

I would suggest a dummy load be connected to antenna port #1 and your 
antennas to #2 and #3.   As to grounding, I suggest one review the ARRL 
book "Grounding and Bonding for the amateur station".


I've seen many ham stations that ground ground ground and still have 
issues, in some cases they attribute to a dangerous condition,  
regarding lightning protection and RF grounding. There is a LOT of 
incorrect and incomplete information passed around with regard to 
grounding.  It is mostly originated as  "old ham lore" with no 
scientific basis found or applied.


And yes, the KAT500 has 3 antenna ports and port #1 is the default 
selected when power is not applied.


73

Bob, K4TAX


On 10/1/2021 8:15 AM, elecraft-requ...@mailman.qth.net wrote:

Message: 11
Date: Thu, 30 Sep 2021 10:10:49 -0500
From: Ted Edwards W3TB
To: "David Ferrington, M0XDF"
Cc: ElecraftList
Subject: Re: [Elecraft] KAT500 - does it earth antenna connections
Message-ID:

Content-Type: text/plain; charset="UTF-8"

Interesting idea.
I have two antennas, so I could connect my ground to #1 and antennas to #2
and #3?
Just manually choose an antenna on start-up.   Hm-m-m-m-m.

On Thu, Sep 30, 2021 at 9:54 AM David Ferrington, M0XDF <
m0...@alphadene.co.uk> wrote:


Thanks Greg - guess I should learn to count!
73 de David, M0XDF

If people knew how hard I worked to get my mastery, it wouldn't seem so
wonderful after all. -Michelangelo Buonarroti, sculptor, painter,
architect, and poet (1475-1564)


On 30 Sep 2021, at 15:46, Greg Mitchell  wrote:

It has 3 antenna connections, not 4. It grounds the unused ones and

selects antenna 1 on power-off. I put my dummy-load on antenna 1 so my
station is disconnected from the antennas when powered down.

On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF <

m0...@alphadene.co.uk  <mailto:m0...@alphadene.co.uk>> wrote:

Sorry if this is obvious, but I haven?t bought a KAT500 yet (to go with

the KPA500 I managed to pick up from a fellow ham). I?m aware there are 4
selectable antenna connectors. Does it ground or earth the ones not
currently selected?

73 de David, M0XDF (K3 #174, P3 #108)

For disappearing acts, it's hard to beat what happens to the eight hours

supposedly left after eight of sleep and eight of work.

-Doug Larson

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-- 73 de Ted Edwards, W3TB and G?PWW and thinking about operating CW: 
"Do today what others won't, so you can do tomorrow what others can't."

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Re: [Elecraft] KAT500 - does it earth antenna connections

[Jack Brindle via Elecraft]

This is not quite correct. It does not connect unused antenna ports to ground. 
It does have a GDT and 1 meg resistor to ground on each port, however.
When power is off to the KAT500, ANT1 is connected directly to the input port.

But you are correct in that it has three output antenna ports.

73,
Jack, W6FB



> On Sep 30, 2021, at 9:46 AM, Greg Mitchell  wrote:
> 
> It has 3 antenna connections, not 4. It grounds the unused ones and selects
> antenna 1 on power-off. I put my dummy-load on antenna 1 so my station is
> disconnected from the antennas when powered down.
> 
> On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF <
> m0...@alphadene.co.uk > wrote:
> 
>> Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with
>> the KPA500 I managed to pick up from a fellow ham). I’m aware there are 4
>> selectable antenna connectors. Does it ground or earth the ones not
>> currently selected?
>> 
>> 73 de David, M0XDF (K3 #174, P3 #108)
>> 
>> For disappearing acts, it's hard to beat what happens to the eight hours
>> supposedly left after eight of sleep and eight of work.
>> -Doug Larson
>> 
>> __
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Re: [Elecraft] KAT500 - does it earth antenna connections

[Ray]

The Ground should be Attached to the Equipment,
Not to the Antenna lead.
Ray WA6VAB  K3 


From: David Ferrington, M0XDF
Sent: Thursday, September 30, 2021 8:20 AM
To: Ted Edwards W3TB
Cc: ElecraftList
Subject: Re: [Elecraft] KAT500 - does it earth antenna connections

Or connect a dummy load via a power meter (Bird 43) to antenna 1, so you can 
check power output against a third party meter.
73 de David, M0XDF
-- 
It came to me that reform should begin at home, and since that day I have
not had time to remake the world. -Will Durant, historian (1885-1981)

> On 30 Sep 2021, at 16:10, Ted Edwards W3TB  wrote:
> 
> Interesting idea.
> I have two antennas, so I could connect my ground to #1 and antennas to #2 
> and #3?
> Just manually choose an antenna on start-up.   Hm-m-m-m-m.
> 
> On Thu, Sep 30, 2021 at 9:54 AM David Ferrington, M0XDF 
> mailto:m0...@alphadene.co.uk>> wrote:
> Thanks Greg - guess I should learn to count!
> 73 de David, M0XDF
> 
> If people knew how hard I worked to get my mastery, it wouldn't seem so 
> wonderful after all. -Michelangelo Buonarroti, sculptor, painter, architect, 
> and poet (1475-1564) 
> 
> > On 30 Sep 2021, at 15:46, Greg Mitchell  > <mailto:kb1...@arrl.net>> wrote:
> > 
> > It has 3 antenna connections, not 4. It grounds the unused ones and selects 
> > antenna 1 on power-off. I put my dummy-load on antenna 1 so my station is 
> > disconnected from the antennas when powered down.
> > 
> > On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF 
> >  > <mailto:m0...@alphadene.co.uk><mailto:m0...@alphadene.co.uk 
> > <mailto:m0...@alphadene.co.uk>>> wrote:
> > Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with the 
> > KPA500 I managed to pick up from a fellow ham). I’m aware there are 4 
> > selectable antenna connectors. Does it ground or earth the ones not 
> > currently selected?
> > 
> > 73 de David, M0XDF (K3 #174, P3 #108)
> > 
> > For disappearing acts, it's hard to beat what happens to the eight hours 
> > supposedly left after eight of sleep and eight of work.
> > -Doug Larson 
> > 
> > __
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> > Home: http://mailman.qth.net/mailman/listinfo/elecraft 
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> 
> -- 
> 73 de Ted Edwards, W3TB and GØPWW
> 
> and thinking about operating CW:
> "Do today what others won't,
> so you can do tomorrow what others can't."

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Re: [Elecraft] KAT500 - does it earth antenna connections

[David Ferrington, M0XDF]

Or connect a dummy load via a power meter (Bird 43) to antenna 1, so you can 
check power output against a third party meter.
73 de David, M0XDF
-- 
It came to me that reform should begin at home, and since that day I have
not had time to remake the world. -Will Durant, historian (1885-1981)

> On 30 Sep 2021, at 16:10, Ted Edwards W3TB  wrote:
> 
> Interesting idea.
> I have two antennas, so I could connect my ground to #1 and antennas to #2 
> and #3?
> Just manually choose an antenna on start-up.   Hm-m-m-m-m.
> 
> On Thu, Sep 30, 2021 at 9:54 AM David Ferrington, M0XDF 
> mailto:m0...@alphadene.co.uk>> wrote:
> Thanks Greg - guess I should learn to count!
> 73 de David, M0XDF
> 
> If people knew how hard I worked to get my mastery, it wouldn't seem so 
> wonderful after all. -Michelangelo Buonarroti, sculptor, painter, architect, 
> and poet (1475-1564) 
> 
> > On 30 Sep 2021, at 15:46, Greg Mitchell  > > wrote:
> > 
> > It has 3 antenna connections, not 4. It grounds the unused ones and selects 
> > antenna 1 on power-off. I put my dummy-load on antenna 1 so my station is 
> > disconnected from the antennas when powered down.
> > 
> > On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF 
> >  >  > >> wrote:
> > Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with the 
> > KPA500 I managed to pick up from a fellow ham). I’m aware there are 4 
> > selectable antenna connectors. Does it ground or earth the ones not 
> > currently selected?
> > 
> > 73 de David, M0XDF (K3 #174, P3 #108)
> > 
> > For disappearing acts, it's hard to beat what happens to the eight hours 
> > supposedly left after eight of sleep and eight of work.
> > -Doug Larson 
> > 
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft 
> >  
> >  > >
> > Help: http://mailman.qth.net/mmfaq.htm  
> > >
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> > >
> > 
> > This list hosted by: http://www.qsl.net  
> > >
> > Please help support this email list: http://www.qsl.net/donate.html 
> >   > >
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> > >
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> 
> -- 
> 73 de Ted Edwards, W3TB and GØPWW
> 
> and thinking about operating CW:
> "Do today what others won't,
> so you can do tomorrow what others can't."

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Re: [Elecraft] KAT500 - does it earth antenna connections

[Greg Mitchell]

You don't need to manually choose an antenna on startup. It remembers what
was last used on each band (assuming you are using an Elecraft or Kenwood
rig with it). I think it will still remember the last used even in a dumb
situation without knowledge from the radio; it just needs the radio support
to have "per-band" memory. I could be wrong. I know it remembers fine with
my K3.

On Thu, Sep 30, 2021 at 11:11 AM Ted Edwards W3TB 
wrote:

> Interesting idea.
> I have two antennas, so I could connect my ground to #1 and antennas to #2
> and #3?
> Just manually choose an antenna on start-up.   Hm-m-m-m-m.
>
> On Thu, Sep 30, 2021 at 9:54 AM David Ferrington, M0XDF <
> m0...@alphadene.co.uk> wrote:
>
>> Thanks Greg - guess I should learn to count!
>> 73 de David, M0XDF
>>
>> If people knew how hard I worked to get my mastery, it wouldn't seem so
>> wonderful after all. -Michelangelo Buonarroti, sculptor, painter,
>> architect, and poet (1475-1564)
>>
>> > On 30 Sep 2021, at 15:46, Greg Mitchell  wrote:
>> >
>> > It has 3 antenna connections, not 4. It grounds the unused ones and
>> selects antenna 1 on power-off. I put my dummy-load on antenna 1 so my
>> station is disconnected from the antennas when powered down.
>> >
>> > On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF <
>> m0...@alphadene.co.uk > wrote:
>> > Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with
>> the KPA500 I managed to pick up from a fellow ham). I’m aware there are 4
>> selectable antenna connectors. Does it ground or earth the ones not
>> currently selected?
>> >
>> > 73 de David, M0XDF (K3 #174, P3 #108)
>> >
>> > For disappearing acts, it's hard to beat what happens to the eight
>> hours supposedly left after eight of sleep and eight of work.
>> > -Doug Larson
>> >
>> > __
>> > Elecraft mailing list
>> > Home: http://mailman.qth.net/mailman/listinfo/elecraft <
>> http://mailman.qth.net/mailman/listinfo/elecraft>
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>> http://mailman.qth.net/mmfaq.htm>
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>> >
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>> > Please help support this email list: http://www.qsl.net/donate.html <
>> http://www.qsl.net/donate.html>
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>
>
>
> --
> 73 de Ted Edwards, W3TB and GØPWW
>
> and thinking about operating CW:
> "Do today what others won't,
> so you can do tomorrow what others can't."
>
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Re: [Elecraft] KAT500 - does it earth antenna connections

[Ted Edwards W3TB]

Interesting idea.
I have two antennas, so I could connect my ground to #1 and antennas to #2
and #3?
Just manually choose an antenna on start-up.   Hm-m-m-m-m.

On Thu, Sep 30, 2021 at 9:54 AM David Ferrington, M0XDF <
m0...@alphadene.co.uk> wrote:

> Thanks Greg - guess I should learn to count!
> 73 de David, M0XDF
>
> If people knew how hard I worked to get my mastery, it wouldn't seem so
> wonderful after all. -Michelangelo Buonarroti, sculptor, painter,
> architect, and poet (1475-1564)
>
> > On 30 Sep 2021, at 15:46, Greg Mitchell  wrote:
> >
> > It has 3 antenna connections, not 4. It grounds the unused ones and
> selects antenna 1 on power-off. I put my dummy-load on antenna 1 so my
> station is disconnected from the antennas when powered down.
> >
> > On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF <
> m0...@alphadene.co.uk > wrote:
> > Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with
> the KPA500 I managed to pick up from a fellow ham). I’m aware there are 4
> selectable antenna connectors. Does it ground or earth the ones not
> currently selected?
> >
> > 73 de David, M0XDF (K3 #174, P3 #108)
> >
> > For disappearing acts, it's hard to beat what happens to the eight hours
> supposedly left after eight of sleep and eight of work.
> > -Doug Larson
> >
> > __
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-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."
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Re: [Elecraft] KAT500 - does it earth antenna connections

[David Ferrington, M0XDF]

Thanks Greg - guess I should learn to count!
73 de David, M0XDF

If people knew how hard I worked to get my mastery, it wouldn't seem so 
wonderful after all. -Michelangelo Buonarroti, sculptor, painter, architect, 
and poet (1475-1564) 

> On 30 Sep 2021, at 15:46, Greg Mitchell  wrote:
> 
> It has 3 antenna connections, not 4. It grounds the unused ones and selects 
> antenna 1 on power-off. I put my dummy-load on antenna 1 so my station is 
> disconnected from the antennas when powered down.
> 
> On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF 
> mailto:m0...@alphadene.co.uk>> wrote:
> Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with the 
> KPA500 I managed to pick up from a fellow ham). I’m aware there are 4 
> selectable antenna connectors. Does it ground or earth the ones not currently 
> selected?
> 
> 73 de David, M0XDF (K3 #174, P3 #108)
> 
> For disappearing acts, it's hard to beat what happens to the eight hours 
> supposedly left after eight of sleep and eight of work.
> -Doug Larson 
> 
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Re: [Elecraft] KAT500 - does it earth antenna connections

[Greg Mitchell]

It has 3 antenna connections, not 4. It grounds the unused ones and selects
antenna 1 on power-off. I put my dummy-load on antenna 1 so my station is
disconnected from the antennas when powered down.

On Thu, Sep 30, 2021 at 10:40 AM David Ferrington, M0XDF <
m0...@alphadene.co.uk> wrote:

> Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with
> the KPA500 I managed to pick up from a fellow ham). I’m aware there are 4
> selectable antenna connectors. Does it ground or earth the ones not
> currently selected?
>
> 73 de David, M0XDF (K3 #174, P3 #108)
>
> For disappearing acts, it's hard to beat what happens to the eight hours
> supposedly left after eight of sleep and eight of work.
> -Doug Larson
>
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[Elecraft] KAT500 - does it earth antenna connections

[David Ferrington, M0XDF]

Sorry if this is obvious, but I haven’t bought a KAT500 yet (to go with the 
KPA500 I managed to pick up from a fellow ham). I’m aware there are 4 
selectable antenna connectors. Does it ground or earth the ones not currently 
selected?

73 de David, M0XDF (K3 #174, P3 #108)

For disappearing acts, it's hard to beat what happens to the eight hours 
supposedly left after eight of sleep and eight of work.
-Doug Larson 

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Re: [Elecraft] KAT500/KPA500 with IC-7610?

[Ken Winterling]

I have had the IC-7610 and the KPA500/KAT500 for over three years and it
works very well when I switch bands with the intention of transmitting. My
"nit" to pick is that the KAT500, as has been said, can not be preset by
the IC-7610 in receive. It can preset the KPA500, for all bands but WARC,
by using a DIY "band data" voltage cable (Icom doesn't support band data
voltages for the WARC bands).

If I want to *listen* to different frequencies on the IC-7610 that are on
different antennas connected to the KAT500 I have to manually select the
antenna on the KAT500. This makes scanning frequencies on the IC-7610
impossible.

The KPA1500, that combines an amp and antenna matcher (aka tuner), can read
Icom CI-V data and preset both the amp and the "tuner". This feature should
have been/should be available for the KPA500 and KAT500. I believe the
KPA500 and KAT500 can read data from Kenwood and Yaesu transceivers. Why
was Icom left out of the mix?

Ken
WA2LBI





On Sun, Aug 1, 2021 at 4:33 PM CUTTER DAVID via Elecraft <
elecraft@mailman.qth.net> wrote:

>
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Re: [Elecraft] KAT500/KPA500 with IC-7610?

[Lyn Norstad]

Yes, I believe you're right, Andy.  At least the CI-V is capable of
including frequency data - but KAT doesn't read it.

The KPA does read band data, presumably from voltage.

73
Lyn, W0LEN


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Andy Durbin
Sent: Sunday, August 01, 2021 2:15 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KAT500/KPA500 with IC-7610?

"The only downside to using Icom gear with the KPA/KAT500 is that Elecraft
does not "read" the frequency "voltage" indicator and therefore does not
preset the tuner to the correct values without transmitting."

KPA500 only needs to know the band but KAT500 needs to know the actual
frequency within the band.  Isn't ICOM band voltage exactly that - a band
indicator not a frequency indicator?

To implement the interface properly you'd have to know the exact TX
frequency which I think could be extracted from CI-V data.

73,
Andy, k3wyc
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Re: [Elecraft] KAT500/KPA500 with IC-7610?

[CUTTER DAVID via Elecraft]

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Re: [Elecraft] KAT500/KPA500 with IC-7610?

[Andy Durbin]

"Both are VERY quick to sense TX frequency. All it takes ia a dit or a tap on 
the mic. All they NEED from the rig are RF and a KEY or PTT voltage or closure."

May work for you but are you using KAT500 antenna port selection?  My issues 
with RF detection as the primary tuning mechanism include the fact that the 
KAT500 will fault before it has time to select the correct antenna for the band 
in use.

I need the KAT500 and KPA500 to be configured before I transmit.  I suspect 
that anyone who uses KAT500 antenna port selection would too.

73,
Andy, k3wyc

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Re: [Elecraft] KAT500/KPA500 with IC-7610?

[Jim Brown]

On 8/1/2021 12:15 PM, Andy Durbin wrote:

KPA500 only needs to know the band but KAT500 needs to know the actual 
frequency within the band.


Both are VERY quick to sense TX frequency. All it takes ia a dit or a 
tap on the mic. All they NEED from the rig are RF and a KEY or PTT 
voltage or closure.


73, Jim K9YC
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[Elecraft] KAT500/KPA500 with IC-7610?

[Andy Durbin]

"The only downside to using Icom gear with the KPA/KAT500 is that Elecraft does 
not "read" the frequency "voltage" indicator and therefore does not preset the 
tuner to the correct values without transmitting."

KPA500 only needs to know the band but KAT500 needs to know the actual 
frequency within the band.  Isn't ICOM band voltage exactly that - a band 
indicator not a frequency indicator?

To implement the interface properly you'd have to know the exact TX frequency 
which I think could be extracted from CI-V data.

73,
Andy, k3wyc
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Re: [Elecraft] KAT500/KPA500 with IC-7610?

[Lyn Norstad]

I'll chime in too, echoing what Ken says.  All you need is the "tune" cable
to connect the KAT500 to the rig for control of the Tune function.  I also
use the LDG cable (just because it's easy ...) but you can easily make your
own.  (I am not familiar with the Ten-a-Tuner mentioned by Buck ... perhaps
it is the same?)

I prefer to use the Elecraft Utilities for both KPA and KAT500 for all
tuning and setup settings, but the Tune button on the rig (or tuner) works
fine as well (it automatically supplies the proper power for tuning).  

Generally, for digital operation I set the rig to about 18% power.  For SSB,
up to 25%.  All the rig settings are automatically stored with each saved
config file.

The only downside to using Icom gear with the KPA/KAT500 is that Elecraft
does not "read" the frequency "voltage" indicator and therefore does not
preset the tuner to the correct values without transmitting.  That
ultimately is not a big deal, but does produce a 2 or 3 second delay for
tuning when first transmitting after a band or significant frequency change.
I generally hit the utility's Tune button as soon as I change so the
receiver sees a good match.

73
Lyn, W0LEN

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Winterling
Sent: Friday, July 30, 2021 12:41 PM
To: Buck
Cc: Elecraft Reflector
Subject: Re: [Elecraft] KAT500/KPA500 with IC-7610?

Chuck,

I, too, have been using an IC-7610 with the KAT500/KPA500 combination for
several years. My IC-7610 TUNER jack is connected to the TUNE jack on the
rear of the KAT500 via a LDG Electronics IC-PAC-6 cable. While the TUNE
button on the IC-7610 or the TUNE button on the KAT500 activates the
IC-7610 10W tune function and causes the KAT500 to tune, the Elecraft
KAT500 manual stated "If a tune cycle is performed, 20 watts or more will
produce more accurate tuning".

My procedure is to switch to RTTY mode on the IC-7610 and key the rig. The
KAT500 matches the load and I return the rig to the previous mode. This
literally takes only a few seconds. Yes, the TUNE button works but I have
found that sometimes my method produces a better match. Be sure to follow
the KAT500 "training" procedure to store your various bands and frequencies
in the tuner so they can be quickly recalled.

As has been mentioned, you have to manually adjust your output as you
switch between the amp and full power. I have a Brother P-Touch label on
the amp to remind me about max power input.

As for obtaining a tuner cable, you can get one from LDG, and other
vendors. The IC-PAC-6 cable is 6' long while the IC-PAC cable is 14" long.
https://ldgelectronics.com/index.php/products/accessories/cables/

GL & 73!

Ken
WA2LBI



On Fri, Jul 30, 2021 at 12:55 PM Buck  wrote:

> I am running that combo now.  Plug a Ten-a-Tuner ($10) from W2ENY.com
> into the antenna tuner jack on the back of the 7610 or 7300.  When you
> push the rig's tune button it will send a 10w signal for about 8
> seconds.  The KAT500 reads the frequency and makes the switch also
> sending the info to the KPA500.
>
> You have to manually reduce the drive power from the 7610 or the amp
> will fault when you transmit.
>
> It is not as elegant as the Elecraft system but it works reasonably
> well.  I was told there was a cable that would connect the 7610 but I
> could not get my home-brew one to work.  If someone can point to a
> source, I would appreciate it.
>
> Buck, K4IA
> Honor Roll
> 8BDXCC
> Author EasyWayHamBooks.com
> License and Operating Manuals
>
> On 7/30/2021 9:12 AM, Chuck Chandler wrote:
> > I'm currently running the K3S with the KAT500/KPA500 combo.  It works
> > great.
> >
> > I'm starting to look at what my next rig might be, and have tentatively
> > narrowed it down to the K4 and IC-7610.  I know the K4 will integrate
> with
> > the KAT/KPA just as well as the K3 does.
> >
> > How about the IC-7610?  Are there significant drawbacks in the
> > integration?  How well does the iCom handle things like training the KAT
> > for a new antenna via the rig TUNE button, or changing power levels
> > between barefoot and QRO, for example?   Are power settings per band
> > supported?
> >
> > Any advice appreciated!
> >
> > 73 de Chuck, WS1L
> >
> > chandler...@gmail.com
> >
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H

Re: [Elecraft] KAT500/KPA500 with IC-7610?

[Ken Winterling]

Chuck,

I, too, have been using an IC-7610 with the KAT500/KPA500 combination for
several years. My IC-7610 TUNER jack is connected to the TUNE jack on the
rear of the KAT500 via a LDG Electronics IC-PAC-6 cable. While the TUNE
button on the IC-7610 or the TUNE button on the KAT500 activates the
IC-7610 10W tune function and causes the KAT500 to tune, the Elecraft
KAT500 manual stated "If a tune cycle is performed, 20 watts or more will
produce more accurate tuning".

My procedure is to switch to RTTY mode on the IC-7610 and key the rig. The
KAT500 matches the load and I return the rig to the previous mode. This
literally takes only a few seconds. Yes, the TUNE button works but I have
found that sometimes my method produces a better match. Be sure to follow
the KAT500 "training" procedure to store your various bands and frequencies
in the tuner so they can be quickly recalled.

As has been mentioned, you have to manually adjust your output as you
switch between the amp and full power. I have a Brother P-Touch label on
the amp to remind me about max power input.

As for obtaining a tuner cable, you can get one from LDG, and other
vendors. The IC-PAC-6 cable is 6' long while the IC-PAC cable is 14" long.
https://ldgelectronics.com/index.php/products/accessories/cables/

GL & 73!

Ken
WA2LBI



On Fri, Jul 30, 2021 at 12:55 PM Buck  wrote:

> I am running that combo now.  Plug a Ten-a-Tuner ($10) from W2ENY.com
> into the antenna tuner jack on the back of the 7610 or 7300.  When you
> push the rig's tune button it will send a 10w signal for about 8
> seconds.  The KAT500 reads the frequency and makes the switch also
> sending the info to the KPA500.
>
> You have to manually reduce the drive power from the 7610 or the amp
> will fault when you transmit.
>
> It is not as elegant as the Elecraft system but it works reasonably
> well.  I was told there was a cable that would connect the 7610 but I
> could not get my home-brew one to work.  If someone can point to a
> source, I would appreciate it.
>
> Buck, K4IA
> Honor Roll
> 8BDXCC
> Author EasyWayHamBooks.com
> License and Operating Manuals
>
> On 7/30/2021 9:12 AM, Chuck Chandler wrote:
> > I'm currently running the K3S with the KAT500/KPA500 combo.  It works
> > great.
> >
> > I'm starting to look at what my next rig might be, and have tentatively
> > narrowed it down to the K4 and IC-7610.  I know the K4 will integrate
> with
> > the KAT/KPA just as well as the K3 does.
> >
> > How about the IC-7610?  Are there significant drawbacks in the
> > integration?  How well does the iCom handle things like training the KAT
> > for a new antenna via the rig TUNE button, or changing power levels
> > between barefoot and QRO, for example?   Are power settings per band
> > supported?
> >
> > Any advice appreciated!
> >
> > 73 de Chuck, WS1L
> >
> > chandler...@gmail.com
> >
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[Elecraft] KAT500/KPA500 with IC-7610?

[Chuck Chandler]

I'm currently running the K3S with the KAT500/KPA500 combo.  It works
great.

I'm starting to look at what my next rig might be, and have tentatively
narrowed it down to the K4 and IC-7610.  I know the K4 will integrate with
the KAT/KPA just as well as the K3 does.

How about the IC-7610?  Are there significant drawbacks in the
integration?  How well does the iCom handle things like training the KAT
for a new antenna via the rig TUNE button, or changing power levels
between barefoot and QRO, for example?   Are power settings per band
supported?

Any advice appreciated!

73 de Chuck, WS1L

chandler...@gmail.com
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[Elecraft] KAT500 remote control questions.

[Gordon LaPoint]

I'm using the KAT500 remote software to control the tuner remotely. The 
only issue I have is it will not stay in "Manual" mode and switches to 
"Auto" when the software starts up on the remote.  It looks like it 
switches to Auto at other times also, not sure about that yet.


Is there any way to cause the KAT500 Remote software, in host mode, to 
start in "Manual" mode?


I have the software start when the computer boots, along with RCForb 
server and RemAud.


The radio is a Kenwood TS-590sg, but that should not matter.  I have 
tried it with a K3, no difference.


Thanks,

Gordon - N1MGO


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Re: [Elecraft] KAT500 ANT 1 Problem

[Dave]

See the important press release on the horror of "ACD", (Amateur 
Cheapness disease), at:


https://forums.qrz.com/index.php?threads/two-new-genes-linked-to-amateur-radio-cheapness-disease-discovered.754456/

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/12/21 11:46 AM, Bob McGraw wrote:
I realized some 50 years ago that all connectors are not created equal. 
There are good connectors and "good looking" connectors. Since we 
primarily intend to use the connectors and not "look" at them, then one 
should be aware of differences.    If the connector does not have the 
company name or MIL number on it, then it is most likely only a "good 
looking" connector or counterfeit knock-off.   In fact, regarding some 
of the ham fest connectors, I'd  be ashamed to put a company name on 
them too.    Be aware of no name connectors.


Amphenol has been a leader in quality connectors for RF.   Cannon and 
Neutric are good for audio brands.  There's others but be aware there 
are many counterfeit connectors in the market place. Bargain connectors 
generally turn out to be NO BARGAIN because they cause issues, now or 
later.   You've spent several thousand dollars on your station and you 
are going to trust its operation to a $1 connector?  That is false economy.


Also, when soldering the center pin on a PL-259, do NOT let solder build 
up on the outside of the male pin.  It will expand the center contact 
when inserted into the SO-239 and problems will abound.


73

Bob, K4TAX


On 7/12/2021 10:24 AM, elecraft-requ...@mailman.qth.net wrote:

-Original Message-
From:elecraft-boun...@mailman.qth.net  
  On Behalf Of Don Wilhelm

Sent: Sunday, July 11, 2021 17:07
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 ANT1 problem

And discard those "Amazon Special" PL-259s. Use only quality 
connectors.  It is not worth it to use off-spec connectors - you are 
witness to the pain and heartache they can cause.


73,
Don W3FPR

On 7/11/2021 4:52 PM, Dave wrote:

If it were me, I'd replace the SO-239 on the tuner...  That way, you
know the issue won't come back to haunt you later.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI

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[Elecraft] KAT500 ANT 1 Problem

[Bob McGraw]

I realized some 50 years ago that all connectors are not created equal.  
There are good connectors and "good looking" connectors. Since we 
primarily intend to use the connectors and not "look" at them, then one 
should be aware of differences.    If the connector does not have the 
company name or MIL number on it, then it is most likely only a "good 
looking" connector or counterfeit knock-off.   In fact, regarding some 
of the ham fest connectors, I'd  be ashamed to put a company name on 
them too.    Be aware of no name connectors.


Amphenol has been a leader in quality connectors for RF.   Cannon and 
Neutric are good for audio brands.  There's others but be aware there 
are many counterfeit connectors in the market place. Bargain connectors 
generally turn out to be NO BARGAIN because they cause issues, now or 
later.   You've spent several thousand dollars on your station and you 
are going to trust its operation to a $1 connector?  That is false economy.


Also, when soldering the center pin on a PL-259, do NOT let solder build 
up on the outside of the male pin.  It will expand the center contact 
when inserted into the SO-239 and problems will abound.


73

Bob, K4TAX


On 7/12/2021 10:24 AM, elecraft-requ...@mailman.qth.net wrote:

-Original Message-
From:elecraft-boun...@mailman.qth.netOn 
Behalf Of Don Wilhelm
Sent: Sunday, July 11, 2021 17:07
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 ANT1 problem

And discard those "Amazon Special" PL-259s. Use only quality connectors.  It is 
not worth it to use off-spec connectors - you are witness to the pain and heartache they 
can cause.

73,
Don W3FPR

On 7/11/2021 4:52 PM, Dave wrote:

If it were me, I'd replace the SO-239 on the tuner...  That way, you
know the issue won't come back to haunt you later.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI

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[Elecraft] KAT500 ANT1 problem

[Andy Durbin]

"So if the Asian manufacturer considers 4 mm easier and close enough the pin 
will be oversize.WW II drawings give the pin diameter as max/min 
0.158/0.154 ."

Isn't 4. mm = 0.1575 inch?  If so, 4 mm is within the quoted WWII spec size 
range.  The problem would not be specifying 4 mm but the tolerance that was 
placed on that measurement.

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 ANT1 problem

[Dave]

I am using the Times Microwave connectors on Times Microwave LMR-400 for my HF 
antennas. Except a Belsen 8267 jumper around the rotor to Yagi. The Times 
Mocrowave connectors for RG8, 214, 214, 9913, and LMR400. I had the LMR400 left 
over from a job so no cost except the UJF male and one UHF female connectors. 
The PolyPhasers are type N female. As long as the coax is not swinging in the 
wind or run around a rotor then the LMR400 is fine. 

Hardline for my cable runs on HF would be overkill as far as loss since runs 
are under 100 feet for each of three antennas. 

Amphenol is the “gold standard” for RG8/213 installations. 

Dave

Sent from my waxed string and tin cans. 

> On Jul 12, 2021, at 1:56 PM, Jim Brown  wrote:
> 
> No question about that, but my comments were with respect to coax other than 
> hard line.
> 
> 73, Jim K9YC
> 
>> On 7/12/2021 8:09 AM, j...@kk9a.com wrote:
>> So does Andrew/Commscope.
>> John KK9A
>> WO2X wrote:
>> Times Microwave also make good connectors. We use them on UHF, but most 
>> cables we make are designed to be put in place semi-permantly.
> 
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Re: [Elecraft] KAT500 ANT1 problem

[Jim Brown]

On 7/12/2021 9:34 AM, Bill Steffey NY9H wrote:

I'll bet he meant Amphenol

Yes. Bad fingers!

73, Jim
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Re: [Elecraft] KAT500 ANT1 problem

[Jim Brown]

No question about that, but my comments were with respect to coax other 
than hard line.


73, Jim K9YC

On 7/12/2021 8:09 AM, j...@kk9a.com wrote:

So does Andrew/Commscope.

John KK9A

WO2X wrote:

Times Microwave also make good connectors. We use them on UHF, but most cables 
we make are designed to be put in place semi-permantly.


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Re: [Elecraft] KAT500 ANT1 problem

[David Christ]

5/32” inches is 0.156” which is 3.968 mm.  So if the Asian manufacturer 
considers 4 mm easier and close enough the pin will be oversize.WW II 
drawings give the pin diameter as max/min 0.158/0.154 .  5/32 is right in the 
middle of this range.  I don’t have the MILSPEC documentation but guess this is 
likely the dimension. Whether that is enough to create problems, I don’t know.

But I also saw a drawing where the pin diameter was specified as large as 4.01 
mm.

Buying only from manufacturers with a known track record of QA and following 
MIL Specs seems to be wise.

David K0LUM

> On Jul 12, 2021, at 10:09 AM,   wrote:
> 
> A PL-259 should have a 5/32" (4mm) pin.
> 
> John KK9A  
> 
> 
> kd4iz wrote:
> 
> What had apparently happened was that I had a batch of the offshore made
> "Amazon Special" PL-259s that appear to have a slightly oversize center pin.
> The patch cable used until recently had one of them on one end. It had
> spread the leaves on the ANT1 SO259 just enough that a good connector, when
> perfectly centered and seated, did not make contact! Gentle recentering of
> the leaves with a miniature flat blade screw drive yielded relief and a
> self-administered head smack.
> Jack Spitznagel - KD4IZ
> Science River LLC
> Biomedical Consulting Services
> 
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Re: [Elecraft] KAT500 ANT1 problem

[Hugo Loranger]

 Probably! Belden cable with Amphenol connectors ... 



Hugo


 Message d'origine 
De : Bill Steffey NY9H 
Date : 2021-07-12 12 h 34 (GMT-05:00)
À : Hugo Loranger , elecraft@mailman.qth.net
Objet : Re: [Elecraft] KAT500 ANT1 problem

I'll bet he meant Amphenol

On 7/12/2021 12:01 PM, Hugo Loranger wrote:
> Hi Jim,
>
> So Amphenol, DX Engineering, RF Industries, Times Microwave, Andrews, are not 
> recommended?
>
> Only Belden?
>
>
>
> Hugo
>
> Message: 13
> Date: Sun, 11 Jul 2021 21:05:21 -0700
> From: Jim Brown 
> mailto:j...@audiosystemsgroup.com>>
> To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net>
> Subject: Re: [Elecraft] KAT500 ANT1 problem
> Message-ID:
>  
> mailto:ec5ede20-52e9-33a4-677a-2fd2c60fd...@audiosystemsgroup.com>>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> On 7/11/2021 1:52 PM, Dave wrote:
>> What had apparently happened was that I had a batch of the offshore made
>> "Amazon Special" PL-259s that appear to have a slightly oversize center
>> pin.
> For several decades, I've served on the Standards Committee of the Audio
> Engineering Society with representatives of the two best mfrs of audio
> connectors -- Switchcraft and Neutrik. Both report having had problems
> with counterfeits of their parts, and that out of tolerance pretty
> common. Some major mic mfrs, both US and EU, have reported
> counterfeiting of their products.
>
> Years ago, I learned that cheap, no-brand connectors are a very
> expensive mistake. When I got back on the air in 2003, I stocked up with
> several dozen adapters that, over the next ten years caused me no end of
> grief.
>
> In North America, if a UHF, BNC, or type-N connector isn't branded
> Belden or stamped with a MIL part number, it's junk.
>
> 73, Jim K9YC
> __
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Re: [Elecraft] KAT500 ANT1 problem

[Bill Steffey NY9H]

I'll bet he meant Amphenol

On 7/12/2021 12:01 PM, Hugo Loranger wrote:

Hi Jim,

So Amphenol, DX Engineering, RF Industries, Times Microwave, Andrews, are not 
recommended?

Only Belden?



Hugo

Message: 13
Date: Sun, 11 Jul 2021 21:05:21 -0700
From: Jim Brown mailto:j...@audiosystemsgroup.com>>
To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net>
Subject: Re: [Elecraft] KAT500 ANT1 problem
Message-ID:
 
mailto:ec5ede20-52e9-33a4-677a-2fd2c60fd...@audiosystemsgroup.com>>
Content-Type: text/plain; charset=utf-8; format=flowed

On 7/11/2021 1:52 PM, Dave wrote:

What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize center
pin.

For several decades, I've served on the Standards Committee of the Audio
Engineering Society with representatives of the two best mfrs of audio
connectors -- Switchcraft and Neutrik. Both report having had problems
with counterfeits of their parts, and that out of tolerance pretty
common. Some major mic mfrs, both US and EU, have reported
counterfeiting of their products.

Years ago, I learned that cheap, no-brand connectors are a very
expensive mistake. When I got back on the air in 2003, I stocked up with
several dozen adapters that, over the next ten years caused me no end of
grief.

In North America, if a UHF, BNC, or type-N connector isn't branded
Belden or stamped with a MIL part number, it's junk.

73, Jim K9YC
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Re: [Elecraft] KAT500 ANT1 problem

[Hugo Loranger]

Hi Jim,

So Amphenol, DX Engineering, RF Industries, Times Microwave, Andrews, are not 
recommended?

Only Belden?



Hugo

Message: 13
Date: Sun, 11 Jul 2021 21:05:21 -0700
From: Jim Brown mailto:j...@audiosystemsgroup.com>>
To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net>
Subject: Re: [Elecraft] KAT500 ANT1 problem
Message-ID:

mailto:ec5ede20-52e9-33a4-677a-2fd2c60fd...@audiosystemsgroup.com>>
Content-Type: text/plain; charset=utf-8; format=flowed

On 7/11/2021 1:52 PM, Dave wrote:
> What had apparently happened was that I had a batch of the offshore made
> "Amazon Special" PL-259s that appear to have a slightly oversize center
> pin.

For several decades, I've served on the Standards Committee of the Audio
Engineering Society with representatives of the two best mfrs of audio
connectors -- Switchcraft and Neutrik. Both report having had problems
with counterfeits of their parts, and that out of tolerance pretty
common. Some major mic mfrs, both US and EU, have reported
counterfeiting of their products.

Years ago, I learned that cheap, no-brand connectors are a very
expensive mistake. When I got back on the air in 2003, I stocked up with
several dozen adapters that, over the next ten years caused me no end of
grief.

In North America, if a UHF, BNC, or type-N connector isn't branded
Belden or stamped with a MIL part number, it's junk.

73, Jim K9YC
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Re: [Elecraft] KAT500 ANT1 problem

[rocketnj]

Yes, Andrews especially for Heliax hardline 

73
Dave wo2x


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of j...@kk9a.com
Sent: Monday, July 12, 2021 11:09 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 ANT1 problem

So does Andrew/Commscope.

John KK9A

WO2X wrote:

Times Microwave also make good connectors. We use them on UHF, but most cables 
we make are designed to be put in place semi-permantly.

73
Dave wo2x

Sent from my iPad

> On Jul 12, 2021, at 12:07 AM, Jim Brown  wrote:
> 
> On 7/11/2021 1:52 PM, Dave wrote:
>> What had apparently happened was that I had a batch of the offshore 
>> made "Amazon Special" PL-259s that appear to have a slightly oversize center 
>> pin.
> 
> For several decades, I've served on the Standards Committee of the Audio 
> Engineering Society with representatives of the two best mfrs of audio 
> connectors -- Switchcraft and Neutrik. Both report having had problems with 
> counterfeits of their parts, and that out of tolerance pretty common. Some 
> major mic mfrs, both US and EU, have reported counterfeiting of their 
> products.
> 
> Years ago, I learned that cheap, no-brand connectors are a very expensive 
> mistake. When I got back on the air in 2003, I stocked up with several dozen 
> adapters that, over the next ten years caused me no end of grief.
> 
> In North America, if a UHF, BNC, or type-N connector isn't branded Belden or 
> stamped with a MIL part number, it's junk.
> 
> 73, Jim K9YC

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Re: [Elecraft] KAT500 ANT1 problem

[john]

So does Andrew/Commscope.

John KK9A

WO2X wrote:

Times Microwave also make good connectors. We use them on UHF, but most cables 
we make are designed to be put in place semi-permantly.

73
Dave wo2x

Sent from my iPad

> On Jul 12, 2021, at 12:07 AM, Jim Brown  wrote:
> 
> On 7/11/2021 1:52 PM, Dave wrote:
>> What had apparently happened was that I had a batch of the offshore made
>> "Amazon Special" PL-259s that appear to have a slightly oversize center pin.
> 
> For several decades, I've served on the Standards Committee of the Audio 
> Engineering Society with representatives of the two best mfrs of audio 
> connectors -- Switchcraft and Neutrik. Both report having had problems with 
> counterfeits of their parts, and that out of tolerance pretty common. Some 
> major mic mfrs, both US and EU, have reported counterfeiting of their 
> products.
> 
> Years ago, I learned that cheap, no-brand connectors are a very expensive 
> mistake. When I got back on the air in 2003, I stocked up with several dozen 
> adapters that, over the next ten years caused me no end of grief.
> 
> In North America, if a UHF, BNC, or type-N connector isn't branded Belden or 
> stamped with a MIL part number, it's junk.
> 
> 73, Jim K9YC

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Re: [Elecraft] KAT500 ANT1 problem

[john]

A PL-259 should have a 5/32" (4mm) pin.

John KK9A  


kd4iz wrote:

What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize center pin.
The patch cable used until recently had one of them on one end. It had
spread the leaves on the ANT1 SO259 just enough that a good connector, when
perfectly centered and seated, did not make contact! Gentle recentering of
the leaves with a miniature flat blade screw drive yielded relief and a
self-administered head smack.
Jack Spitznagel - KD4IZ
Science River LLC
Biomedical Consulting Services

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Re: [Elecraft] KAT500 ANT1 problem

[David Decoons]

Times Microwave also make good connectors. We use them on UHF, but most cables 
we make are designed to be put in place semi-permantly.

73
Dave wo2x

Sent from my iPad

> On Jul 12, 2021, at 12:07 AM, Jim Brown  wrote:
> 
> On 7/11/2021 1:52 PM, Dave wrote:
>> What had apparently happened was that I had a batch of the offshore made
>> "Amazon Special" PL-259s that appear to have a slightly oversize center pin.
> 
> For several decades, I've served on the Standards Committee of the Audio 
> Engineering Society with representatives of the two best mfrs of audio 
> connectors -- Switchcraft and Neutrik. Both report having had problems with 
> counterfeits of their parts, and that out of tolerance pretty common. Some 
> major mic mfrs, both US and EU, have reported counterfeiting of their 
> products.
> 
> Years ago, I learned that cheap, no-brand connectors are a very expensive 
> mistake. When I got back on the air in 2003, I stocked up with several dozen 
> adapters that, over the next ten years caused me no end of grief.
> 
> In North America, if a UHF, BNC, or type-N connector isn't branded Belden or 
> stamped with a MIL part number, it's junk.
> 
> 73, Jim K9YC
> 
> 
> 
> 
> 
> 
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Re: [Elecraft] KAT500 ANT1 problem

[Jim Brown]

On 7/11/2021 1:52 PM, Dave wrote:

What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize center 
pin.


For several decades, I've served on the Standards Committee of the Audio 
Engineering Society with representatives of the two best mfrs of audio 
connectors -- Switchcraft and Neutrik. Both report having had problems 
with counterfeits of their parts, and that out of tolerance pretty 
common. Some major mic mfrs, both US and EU, have reported 
counterfeiting of their products.


Years ago, I learned that cheap, no-brand connectors are a very 
expensive mistake. When I got back on the air in 2003, I stocked up with 
several dozen adapters that, over the next ten years caused me no end of 
grief.


In North America, if a UHF, BNC, or type-N connector isn't branded 
Belden or stamped with a MIL part number, it's junk.


73, Jim K9YC






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Re: [Elecraft] KAT500 ANT1 problem

[Andy Durbin]

"The secondary toroid of the directional coupler has a direct path to ground. 
That means there is no straight-through DC path."

I may have misunderstood the schematics.  What I see is a DC path between J1 
input and "ATU".  If K20, K21 and K18 are all in the NC state there will be a 
low impedance DC path between "ATU" and ANT-1.  If any of these relays is 
faulty and not closed the DC path will be open.  Sure, there is a DC path 
between J1 and ground through the coupler but I don't see how that changes the 
path to ANT-1.

If ANT-1 is open circuit to XMTR isn't it likely that K18, K21, or K20 is 
faulty?

I realize this is now just a mental challenge as the OP's problem has already 
been solved.

73,
Andy, k3wyc


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Re: [Elecraft] KAT500 ANT1 problem

[Jack Brindle via Elecraft]

Andy, my friend, you are forgetting something. The secondary toroid of the 
directional coupler has a direct path to ground. That means there is no 
straight-through DC path.

Rare that I catch Andy on something…

73,
Jack, W6FB


> On Jul 11, 2021, at 6:12 PM, Andy Durbin  wrote:
> 
> KAT500 antenna selection drops to ANT-1 when there is no power on KAT500.  
> Also, with no power on KAT500, the Bypass relay defaults to bypass state.  
> There should be a simple DC path between input RF connector and ANT-1 RF 
> connector if the KAT500 is not powered.
> 
> Pull the DC input plug and the coax connectors and measure DC resistance 
> between XMTR and ANT-1.  No fancy PIN diode switching in KAT500, it's all 
> relays.
> 
> 73,
> Andy, k3wyc
> __
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[Elecraft] KAT500 ANT1 problem

[Andy Durbin]

KAT500 antenna selection drops to ANT-1 when there is no power on KAT500.  
Also, with no power on KAT500, the Bypass relay defaults to bypass state.  
There should be a simple DC path between input RF connector and ANT-1 RF 
connector if the KAT500 is not powered.

Pull the DC input plug and the coax connectors and measure DC resistance 
between XMTR and ANT-1.  No fancy PIN diode switching in KAT500, it's all 
relays.

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 ANT1 problem

[Dave]

I have had very good luck using American Radio Supply:

https://www.americanradiosupply.com/

and DXE connectors...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/11/21 2:06 PM, Don Wilhelm wrote:
And discard those "Amazon Special" PL-259s. Use only quality 
connectors.  It is not worth it to use off-spec connectors - you are 
witness to the pain and heartache they can cause.


73,
Don W3FPR

On 7/11/2021 4:52 PM, Dave wrote:
If it were me, I'd replace the SO-239 on the tuner...  That way, you 
know the issue won't come back to haunt you later.


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/11/21 1:48 PM, kd...@frawg.org wrote:

Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your quick
answers and for providing the schematic information.
I pulled the unit and did some poke and prod testing with a DVM here 
on the

anti-static mat. My fear was that K18 had a bad contact in the ANT1
position. -Not!-
What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize 
center pin.

The patch cable used until recently had one of them on one end. It had
spread the leaves on the ANT1 SO259 just enough that a good 
connector, when
perfectly centered and seated, did not make contact! Gentle 
recentering of

the leaves with a miniature flat blade screw drive yielded relief and a
self-administered head smack.
Jack Spitznagel - KD4IZ
Science River LLC
Biomedical Consulting Services



-Original Message-
From: kirk.hard...@k6kar.com 
Sent: Sunday, July 11, 2021 14:07
To: kd...@frawg.org
Subject: RE: [Elecraft] KAT500 ANT1 problem

Jack,

The KAT500 schematic is on line (partial)
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png
  Although all schematics aren't available, this may be enough to get 
you

going.

73,

Kirk, K6KAR

-Original Message-
From: elecraft-boun...@mailman.qth.net 
 On

Behalf Of kd...@frawg.org
Sent: Sunday, July 11, 2021 12:38 PM
To: Elecraft@mailman.qth.net
Cc: 'Elecraft Support' 
Subject: [Elecraft] KAT500 ANT1 problem

All,


This is likely something very straight forward, but I do not have a
schematic to follow and troubleshoot.

Symptom: ANT 1 circuit seems to be dead. No match and fault on switch 
from

ANT2 to ANT1. No receive signal.

Tests:

Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will
match normally with rig's internal ATU.

With KAT500 back in line, selected each tuning position (AUTO, MAN, 
BYP) no

difference

With KAT500 still in line, ANT2 and ANT3 work nominally.

Checks:

Reset to factory defaults, restored last working Configuration, no 
change in

above behavior.


If I was a betting guy, I'd guess a relay or switching diode was open,
however - no schematic, don't really know.

Did I miss something



Does this little beastie need to go back to the mothership?


Thanks,

Jack Spitznagel - KD4IZ

Science River LLC

Biomedical Consulting Services



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Re: [Elecraft] KAT500 ANT1 problem

[kd4iz]

Don,
Already gone and replaced... 
Jack - KD4IZ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Don Wilhelm
Sent: Sunday, July 11, 2021 17:07
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 ANT1 problem

And discard those "Amazon Special" PL-259s. Use only quality connectors.  It is 
not worth it to use off-spec connectors - you are witness to the pain and 
heartache they can cause.

73,
Don W3FPR

On 7/11/2021 4:52 PM, Dave wrote:
> If it were me, I'd replace the SO-239 on the tuner...  That way, you 
> know the issue won't come back to haunt you later.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 7/11/21 1:48 PM, kd...@frawg.org wrote:
>> Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your 
>> quick answers and for providing the schematic information.
>> I pulled the unit and did some poke and prod testing with a DVM here 
>> on the anti-static mat. My fear was that K18 had a bad contact in the 
>> ANT1 position. -Not!- What had apparently happened was that I had a 
>> batch of the offshore made "Amazon Special" PL-259s that appear to 
>> have a slightly oversize center pin.
>> The patch cable used until recently had one of them on one end. It 
>> had spread the leaves on the ANT1 SO259 just enough that a good 
>> connector, when perfectly centered and seated, did not make contact! 
>> Gentle recentering of the leaves with a miniature flat blade screw 
>> drive yielded relief and a self-administered head smack.
>> Jack Spitznagel - KD4IZ
>> Science River LLC
>> Biomedical Consulting Services
>>
>>
>>
>> -Original Message-
>> From: kirk.hard...@k6kar.com 
>> Sent: Sunday, July 11, 2021 14:07
>> To: kd...@frawg.org
>> Subject: RE: [Elecraft] KAT500 ANT1 problem
>>
>> Jack,
>>
>> The KAT500 schematic is on line (partial) 
>> https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png
>> https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png
>> https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png
>>   Although all schematics aren't available, this may be enough to get 
>> you going.
>>
>> 73,
>>
>> Kirk, K6KAR
>>
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net 
>>  On Behalf Of kd...@frawg.org
>> Sent: Sunday, July 11, 2021 12:38 PM
>> To: Elecraft@mailman.qth.net
>> Cc: 'Elecraft Support' 
>> Subject: [Elecraft] KAT500 ANT1 problem
>>
>> All,
>>
>>
>> This is likely something very straight forward, but I do not have a 
>> schematic to follow and troubleshoot.
>>
>> Symptom: ANT 1 circuit seems to be dead. No match and fault on switch 
>> from
>> ANT2 to ANT1. No receive signal.
>>
>> Tests:
>>
>> Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and 
>> will match normally with rig's internal ATU.
>>
>> With KAT500 back in line, selected each tuning position (AUTO, MAN,
>> BYP) no
>> difference
>>
>> With KAT500 still in line, ANT2 and ANT3 work nominally.
>>
>> Checks:
>>
>> Reset to factory defaults, restored last working Configuration, no 
>> change in above behavior.
>>
>>
>> If I was a betting guy, I'd guess a relay or switching diode was open,
>> however - no schematic, don't really know.
>>
>> Did I miss something
>>
>>
>>
>> Does this little beastie need to go back to the mothership?
>>
>>
>> Thanks,
>>
>> Jack Spitznagel - KD4IZ
>>
>> Science River LLC
>>
>> Biomedical Consulting Services
>>
>>
>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html 
>> Message
>> delivered to kirk.hard...@k6kar.com
>>
>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.n

Re: [Elecraft] KAT500 ANT1 problem

[Don Wilhelm]

And discard those "Amazon Special" PL-259s. Use only quality 
connectors.  It is not worth it to use off-spec connectors - you are 
witness to the pain and heartache they can cause.


73,
Don W3FPR

On 7/11/2021 4:52 PM, Dave wrote:
If it were me, I'd replace the SO-239 on the tuner...  That way, you 
know the issue won't come back to haunt you later.


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/11/21 1:48 PM, kd...@frawg.org wrote:

Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your quick
answers and for providing the schematic information.
I pulled the unit and did some poke and prod testing with a DVM here 
on the

anti-static mat. My fear was that K18 had a bad contact in the ANT1
position. -Not!-
What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize 
center pin.

The patch cable used until recently had one of them on one end. It had
spread the leaves on the ANT1 SO259 just enough that a good 
connector, when
perfectly centered and seated, did not make contact! Gentle 
recentering of

the leaves with a miniature flat blade screw drive yielded relief and a
self-administered head smack.
Jack Spitznagel - KD4IZ
Science River LLC
Biomedical Consulting Services



-Original Message-
From: kirk.hard...@k6kar.com 
Sent: Sunday, July 11, 2021 14:07
To: kd...@frawg.org
Subject: RE: [Elecraft] KAT500 ANT1 problem

Jack,

The KAT500 schematic is on line (partial)
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png
  Although all schematics aren't available, this may be enough to get 
you

going.

73,

Kirk, K6KAR

-Original Message-
From: elecraft-boun...@mailman.qth.net 
 On

Behalf Of kd...@frawg.org
Sent: Sunday, July 11, 2021 12:38 PM
To: Elecraft@mailman.qth.net
Cc: 'Elecraft Support' 
Subject: [Elecraft] KAT500 ANT1 problem

All,


This is likely something very straight forward, but I do not have a
schematic to follow and troubleshoot.

Symptom: ANT 1 circuit seems to be dead. No match and fault on switch 
from

ANT2 to ANT1. No receive signal.

Tests:

Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will
match normally with rig's internal ATU.

With KAT500 back in line, selected each tuning position (AUTO, MAN, 
BYP) no

difference

With KAT500 still in line, ANT2 and ANT3 work nominally.

Checks:

Reset to factory defaults, restored last working Configuration, no 
change in

above behavior.


If I was a betting guy, I'd guess a relay or switching diode was open,
however - no schematic, don't really know.

Did I miss something



Does this little beastie need to go back to the mothership?


Thanks,

Jack Spitznagel - KD4IZ

Science River LLC

Biomedical Consulting Services



__
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Re: [Elecraft] KAT500 ANT1 problem

[Dave]

If it were me, I'd replace the SO-239 on the tuner...  That way, you 
know the issue won't come back to haunt you later.


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 7/11/21 1:48 PM, kd...@frawg.org wrote:

Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your quick
answers and for providing the schematic information.
I pulled the unit and did some poke and prod testing with a DVM here on the
anti-static mat. My fear was that K18 had a bad contact in the ANT1
position. -Not!-
What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize center pin.
The patch cable used until recently had one of them on one end. It had
spread the leaves on the ANT1 SO259 just enough that a good connector, when
perfectly centered and seated, did not make contact! Gentle recentering of
the leaves with a miniature flat blade screw drive yielded relief and a
self-administered head smack.
Jack Spitznagel - KD4IZ
Science River LLC
Biomedical Consulting Services



-Original Message-
From: kirk.hard...@k6kar.com 
Sent: Sunday, July 11, 2021 14:07
To: kd...@frawg.org
Subject: RE: [Elecraft] KAT500 ANT1 problem

Jack,

The KAT500 schematic is on line (partial)
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png
  Although all schematics aren't available, this may be enough to get you
going.

73,

Kirk, K6KAR

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of kd...@frawg.org
Sent: Sunday, July 11, 2021 12:38 PM
To: Elecraft@mailman.qth.net
Cc: 'Elecraft Support' 
Subject: [Elecraft] KAT500 ANT1 problem

All,

  


This is likely something very straight forward, but I do not have a
schematic to follow and troubleshoot.

Symptom: ANT 1 circuit seems to be dead. No match and fault on switch from
ANT2 to ANT1. No receive signal.

Tests:

Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will
match normally with rig's internal ATU.

With KAT500 back in line, selected each tuning position (AUTO, MAN, BYP) no
difference

With KAT500 still in line, ANT2 and ANT3 work nominally.

Checks:

Reset to factory defaults, restored last working Configuration, no change in
above behavior.

  


If I was a betting guy, I'd guess a relay or switching diode was open,
however - no schematic, don't really know.

Did I miss something

  

  


Does this little beastie need to go back to the mothership?

  


Thanks,

Jack Spitznagel - KD4IZ

Science River LLC

Biomedical Consulting Services

  

  


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Re: [Elecraft] KAT500 ANT1 problem

[kd4iz]

Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your quick
answers and for providing the schematic information. 
I pulled the unit and did some poke and prod testing with a DVM here on the
anti-static mat. My fear was that K18 had a bad contact in the ANT1
position. -Not!- 
What had apparently happened was that I had a batch of the offshore made
"Amazon Special" PL-259s that appear to have a slightly oversize center pin.
The patch cable used until recently had one of them on one end. It had
spread the leaves on the ANT1 SO259 just enough that a good connector, when
perfectly centered and seated, did not make contact! Gentle recentering of
the leaves with a miniature flat blade screw drive yielded relief and a
self-administered head smack.
Jack Spitznagel - KD4IZ
Science River LLC
Biomedical Consulting Services



-Original Message-
From: kirk.hard...@k6kar.com  
Sent: Sunday, July 11, 2021 14:07
To: kd...@frawg.org
Subject: RE: [Elecraft] KAT500 ANT1 problem

Jack,

The KAT500 schematic is on line (partial)
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png
https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png
 Although all schematics aren't available, this may be enough to get you
going.

73,

Kirk, K6KAR

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of kd...@frawg.org
Sent: Sunday, July 11, 2021 12:38 PM
To: Elecraft@mailman.qth.net
Cc: 'Elecraft Support' 
Subject: [Elecraft] KAT500 ANT1 problem

All,

 

This is likely something very straight forward, but I do not have a
schematic to follow and troubleshoot.

Symptom: ANT 1 circuit seems to be dead. No match and fault on switch from
ANT2 to ANT1. No receive signal.

Tests: 

Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will
match normally with rig's internal ATU.

With KAT500 back in line, selected each tuning position (AUTO, MAN, BYP) no
difference

With KAT500 still in line, ANT2 and ANT3 work nominally.

Checks:

Reset to factory defaults, restored last working Configuration, no change in
above behavior.

 

If I was a betting guy, I'd guess a relay or switching diode was open,
however - no schematic, don't really know.

Did I miss something

 

 

Does this little beastie need to go back to the mothership?

 

Thanks,

Jack Spitznagel - KD4IZ

Science River LLC

Biomedical Consulting Services

 

 

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[Elecraft] KAT500 ANT1 problem

[kd4iz]

All,

 

This is likely something very straight forward, but I do not have a
schematic to follow and troubleshoot.

Symptom: ANT 1 circuit seems to be dead. No match and fault on switch from
ANT2 to ANT1. No receive signal.

Tests: 

Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will
match normally with rig's internal ATU.

With KAT500 back in line, selected each tuning position (AUTO, MAN, BYP) no
difference

With KAT500 still in line, ANT2 and ANT3 work nominally.

Checks:

Reset to factory defaults, restored last working Configuration, no change in
above behavior.

 

If I was a betting guy, I'd guess a relay or switching diode was open,
however - no schematic, don't really know.

Did I miss something

 

 

Does this little beastie need to go back to the mothership?

 

Thanks,

Jack Spitznagel - KD4IZ

Science River LLC

Biomedical Consulting Services

 

 

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Re: [Elecraft] KAT500 80 meter anomaly

[Andy Durbin]

All the frequencies lie in the same bin and there will be some, perhaps a lot 
of, variation in match as the frequency changes.  I would first run an autotune 
at the mid point of all the frequencies. I would then use MAN mode to prevent 
auto tune on frequency change within the same bin.

Autotune can come up with some really bad matches particularly if the 
transmitter folds back during the tune attempt.  KAT firmware can see reflected 
power as zero with low forward power even if the match is horrible (coupler is 
low sensitivity) and this makes it believe it has found a good match.

73,
Andy, k3wyc



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Re: [Elecraft] KAT500 80 meter anomaly

[Lyn Norstad]

Andy -

I had a response from Dick D, and he suggested disabling Recall Tune on QSY
in both MAN and AUTO modes.  I did so, and the problem stopped ... for a day
or two ... but comes back if I operate in MAN mode very long (I normally
leave it in AUTO).  I am using Counter for frequency info (ICOM).  I believe
MTM0 and MTA0 would do the same.

I have experimented with various FCCS settings in the past - including 5
- and will revisit that.  Basically, the KAT does not exhibit the stability
it had when new (2 years ago).  And I seem to need to go thru this whole
process about every 6 months or so.  My first step is always to check the
antenna system, but that has not revealed any issues.

Perhaps aging components are at fault.  If there was a test for same, that
would be helpful.  But the issues are not critical enough for me to send it
in for service since it is out of warranty, and who needs to clog up the
Mother Ship at this time?

73
Lyn, W0LEN


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Andy Durbin
Sent: Friday, July 09, 2021 6:19 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KAT500 80 meter anomaly

"Is there a Command that would help to alleviate this behavior?  Or a way to
tell the KAT500 to ignore one or more of its preset frequencies that are
causing issues?"

How are you telling your KAT500 what frequency to use.  CAT, Counter, or
both?

Is you KAT500 in MAN or AUTO mode?

If you are commanding frequency with CAT then FCCS 5; will make the
KAT500 ignore counter frequency for up to 50 seconds and stop any toggling
between CAT and counter frequencies.

Commands MTM0; and MTA0; ought to help but, according to my test notes, they
don't work as documented.

73,
Andy, k3wyc
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[Elecraft] KAT500 80 meter anomaly

[Andy Durbin]

"Is there a Command that would help to alleviate this behavior?  Or a way to 
tell the KAT500 to ignore one or more of its preset frequencies that are 
causing issues?"

How are you telling your KAT500 what frequency to use.  CAT, Counter, or both?

Is you KAT500 in MAN or AUTO mode?

If you are commanding frequency with CAT then FCCS 5; will make the KAT500 
ignore counter frequency for up to 50 seconds and stop any toggling between CAT 
and counter frequencies.

Commands MTM0; and MTA0; ought to help but, according to my test notes, they 
don't work as documented.

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 80 meter anomaly

[Lyn Norstad]

EDIT:  Don't be confused when I say "L/C" but express the values as "C/L."
You know what I mean ... 

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyn Norstad
Sent: Tuesday, July 06, 2021 3:48 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KAT500 80 meter anomaly

On 80 meters, the KAT500 stores frequencies in memory every 10 kHz.  Because
of bandwidth issues, normally that's a good thing.  Except when it isn't.

 

Many digital modes that use prescribed frequencies are clustered in a fairly
narrow region.  For example ("dial frequency" in kHz):

 

FT8 = 3573.000

FT4 = 3575.000

 

Winlink 80m Gateway 1 = 3586.000

Winlink 80m Gateway 2 = 3595.000

 

If you only operate FT8 and FT4, there is no issue.  Likewise, if you only
operate Winlink in that region, no problem.  But if you operate both, the
KAT500 can't seem to recall the exact settings for any of those frequencies
consistently.

 

Here's an experiment for you to try, if you're interested:

 

1)Clear the frequency memory for 80 meters on whatever antenna you use
(KAT500 configuration>Erase Antenna Tuner Memories).

2)Using the same utility, "Memorize" a setting for each of the four
above frequencies.

3)Conduct a Winlink VARA HF session at both 3586 and 3595 kHz (if you
can't connect to any stations, that's OK too).

4)Then using WSJT-X software, do a brief session using FT8 and then FT4.

 

So far, so good.  Everything works great.

 

But now go back to the Winlink software are try to check for mail using the
same frequencies, 3586 and 3595 (it would be nice to connect this time).  If
your system works like mine, on every other transmission it will hunt for a
new match (even if it's already 1:1).  In my case, the "normal" L/C values
are:

 

@ 3573 = 0 / 6500

@ 3575 = 0 / 6500

 

@ 3586 = 180 / 6500

@ 3595 = 180 / 6500

 

When the KAT500 goes a little bit crazy with its "every other time hunt" on
the Winlink frequencies (3586 and 3595) it will jump to some extremely high
SWR value (in the 80s or 90s) and then eventually settle back with an L/C of
. say . 0 / 5400 (creating settings for 3592 kHz).  Meanwhile, the Gateway
station has very likely lost at least half of your transmission.  This
behavior is independent of Automatic or Manual settings, exciter power
settings, KPA500 On or Off (but OFF is better for testing, for obvious
reasons).

 

Is there a Command that would help to alleviate this behavior?  Or a way to
tell the KAT500 to ignore one or more of its preset frequencies that are
causing issues?

 

 

73

Lyn, W0LEN

 

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[Elecraft] KAT500 80 meter anomaly

[Lyn Norstad]

On 80 meters, the KAT500 stores frequencies in memory every 10 kHz.  Because
of bandwidth issues, normally that's a good thing.  Except when it isn't.

 

Many digital modes that use prescribed frequencies are clustered in a fairly
narrow region.  For example ("dial frequency" in kHz):

 

FT8 = 3573.000

FT4 = 3575.000

 

Winlink 80m Gateway 1 = 3586.000

Winlink 80m Gateway 2 = 3595.000

 

If you only operate FT8 and FT4, there is no issue.  Likewise, if you only
operate Winlink in that region, no problem.  But if you operate both, the
KAT500 can't seem to recall the exact settings for any of those frequencies
consistently.

 

Here's an experiment for you to try, if you're interested:

 

1)Clear the frequency memory for 80 meters on whatever antenna you use
(KAT500 configuration>Erase Antenna Tuner Memories).

2)Using the same utility, "Memorize" a setting for each of the four
above frequencies.

3)Conduct a Winlink VARA HF session at both 3586 and 3595 kHz (if you
can't connect to any stations, that's OK too).

4)Then using WSJT-X software, do a brief session using FT8 and then FT4.

 

So far, so good.  Everything works great.

 

But now go back to the Winlink software are try to check for mail using the
same frequencies, 3586 and 3595 (it would be nice to connect this time).  If
your system works like mine, on every other transmission it will hunt for a
new match (even if it's already 1:1).  In my case, the "normal" L/C values
are:

 

@ 3573 = 0 / 6500

@ 3575 = 0 / 6500

 

@ 3586 = 180 / 6500

@ 3595 = 180 / 6500

 

When the KAT500 goes a little bit crazy with its "every other time hunt" on
the Winlink frequencies (3586 and 3595) it will jump to some extremely high
SWR value (in the 80s or 90s) and then eventually settle back with an L/C of
. say . 0 / 5400 (creating settings for 3592 kHz).  Meanwhile, the Gateway
station has very likely lost at least half of your transmission.  This
behavior is independent of Automatic or Manual settings, exciter power
settings, KPA500 On or Off (but OFF is better for testing, for obvious
reasons).

 

Is there a Command that would help to alleviate this behavior?  Or a way to
tell the KAT500 to ignore one or more of its preset frequencies that are
causing issues?

 

 

73

Lyn, W0LEN

 

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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Mike Harris via Elecraft]

I wish more would do the honour of letting the list know the cure.

Regards,

Mike VP8NO

On 14/06/2021 13:18, Michael K Bottles via Elecraft wrote:

No worries Lance, I hate to tell you how often I have performed “Operator 
Error”!
Kim - K7IM

Sent from my iPad


On Jun 14, 2021, at 09:16, Lance HP  wrote:


I found my issue.operator error.
I didn't realize that the band selection was only 160m. I didn't try changing 
the antenna config when 160m was selected since I don't operate on 160m yet.

I don't remember how that got changed. Anyway...selected all bands AND selected 
enabled for all antennas and it works fine.

Sorry about that!
I am still loving this autotuner. Currently tuning a doublet, but will be 
tuning a longer wire soon (most likely a loop).

Lance
KK4DX

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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Michael K Bottles via Elecraft]

No worries Lance, I hate to tell you how often I have performed “Operator 
Error”!
Kim - K7IM

Sent from my iPad

> On Jun 14, 2021, at 09:16, Lance HP  wrote:
> 
> 
> I found my issue.operator error.
> I didn't realize that the band selection was only 160m. I didn't try changing 
> the antenna config when 160m was selected since I don't operate on 160m yet.
> 
> I don't remember how that got changed. Anyway...selected all bands AND 
> selected enabled for all antennas and it works fine.
> 
> Sorry about that!
> I am still loving this autotuner. Currently tuning a doublet, but will be 
> tuning a longer wire soon (most likely a loop).
> 
> Lance
> KK4DX
> 
> -- Original Message --
> From: "Andy Durbin" 
> To: "Lance HP" 
> Sent: 6/14/2021 11:03:49 AM
> Subject: Re: Re[4]: [Elecraft] KAT500 Tuner antenna selection stuck in #2 
> position
> 
>> With the configuration shown all antennas should have been selectable on 160 
>> m.  I assume your did not make a screen shot with band selected to the band 
>> that exhibited the problem.
>> 
>> Having the same enabled antennas on ALL bands may be appropriate for your 
>> station but  some of my antennas are single band and must only be enabled on 
>> one band.
>> 
>> Anyway, sound like it was doing what you had told it to do but your email 
>> may be rejected by the "list" because of the embedded image.  Perhaps post 
>> there to say you found the problem?
>> 
>> 73,
>> Andy, k3wyc
>> 
>> 
>>> 
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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Lance HP]

I found my issue.operator error.
I didn't realize that the band selection was only 160m. I didn't try 
changing the antenna config when 160m was selected since I don't operate 
on 160m yet.


I don't remember how that got changed. Anyway...selected all bands AND 
selected enabled for all antennas and it works fine.


Sorry about that!
I am still loving this autotuner. Currently tuning a doublet, but will 
be tuning a longer wire soon (most likely a loop).


Lance
KK4DX

-- Original Message --
From: "Andy Durbin" 
To: "Lance HP" 
Sent: 6/14/2021 11:03:49 AM
Subject: Re: Re[4]: [Elecraft] KAT500 Tuner antenna selection stuck in 
#2 position


With the configuration shown all antennas should have been selectable 
on 160 m.  I assume your did not make a screen shot with band selected 
to the band that exhibited the problem.


Having the same enabled antennas on ALL bands may be appropriate for 
your station but  some of my antennas are single band and must only be 
enabled on one band.


Anyway, sound like it was doing what you had told it to do but your 
email may be rejected by the "list" because of the embedded image.  
Perhaps post there to say you found the problem?


73,
Andy, k3wyc





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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Andy Durbin]

""Last resort" tried and in the factory default configuration, the
antenna ports are changeable."

Good to know it isn't a hardware problem.

Can your please take a screen shot of the configuration/antenna tab with "band" 
selected to a band that exhibits the problem.  Email direct to me or post a 
link so everyone can see it.

73,
Andy, k3wyc

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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Lance HP]

Thanks Andy.
"Last resort" tried and in the factory default configuration, the 
antenna ports are changeable.
Restored my saved configuration and it is back to only #2 antenna port - 
no other ports are selectable. Very strangemust be one of those 
"easter eggs" buried in a menu or something.


I'll contact Elecraft *again*. Hopefully I can get someone to talk to 
about the issue. I am surprised I am the only one who has seen this 
issue.


Lance, KK4DX
-- Original Message --
From: "Andy Durbin" 
To: "elecraft@mailman.qth.net" 
Sent: 6/14/2021 9:53:52 AM
Subject: Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 
position



"haven't tried to erase all my settings and revert back to factory default 
settings...yet. I was only going to do that as a last resort."

There is no reason this should be "last resort".  Save the current 
configuration, test with factory default configuration, then restore saved configuration.

If default config does not exhibit the problem then you should send the problem 
configuration to Elecraft support together with an exact series of steps 
required to reproduce the problem.

73,
Andy, k3wyc


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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Andy Durbin]

"haven't tried to erase all my settings and revert back to factory default 
settings...yet. I was only going to do that as a last resort."

There is no reason this should be "last resort".  Save the current 
configuration, test with factory default configuration, then restore saved 
configuration.

If default config does not exhibit the problem then you should send the problem 
configuration to Elecraft support together with an exact series of steps 
required to reproduce the problem.

73,
Andy, k3wyc


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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Lance HP]

I changed the configuration accordingly and no joy. I had everything set 
up properly in the configuration selection - enabled all the antenna 
ports. What is interesting is if I chose an antenna port other than #2, 
it does change on the 'operate' menu briefly, but then reverts back to 
#2. There are no relay clicks from this action.


Lance, KK4DX

-- Original Message --
From: "Phil Hystad" 
To: "kk4dx" 
Cc: elecraft@mailman.qth.net
Sent: 6/13/2021 12:46:57 PM
Subject: Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 
position



I have had a similar problem and in my case I was not looking at the right spot
for adjusting the antennas.

There are two different spots when using the KAT500 utility.  The Operate menu 
selection and then also the Configuration\Antennas selection.

In my case, the Operate page would not let me change the antenna (nor the 
KAT500) because the configuration of antennas was not set up properly.  I have 
no idea how those got changed since they had been OK before but I reconfigured 
the antenna selection options and saved the configuration and everything worked 
correctly after that.

73, phil, K7PEH



 On Jun 13, 2021, at 8:15 AM, kk4dx  wrote:

 Anyone have this happen to them?
 I cannot change the antenna selector via the front panel of the KAT500 or
 the utility software. The utility software is working as I can remotely
 cycle through the modes, but the antenna selector is stuck. All antenna
 positions are checked (enabled) in the utility software and when I advance
 to another position, the software moves the selection back to #2.



 --
 Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Lance HP]

KAT500 mode is any mode - current mode is auto, but any mode change does 
not make any difference in ability to change from the #2 antenna 
position.


 haven't tried to erase all my settings and revert back to factory 
default settings...yet. I was only going to do that as a last resort.


Lance, KK4DX

-- Original Message --
From: "Andy Durbin" 
To: "elecraft@mailman.qth.net" 
Sent: 6/13/2021 8:40:30 PM
Subject: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position


"I cannot change the antenna selector via the front panel of the KAT500 or the 
utility software."

What was the KAT500 mode when you observed this problem?  There is a known 
firmware defect that may prevent enabled antennas being selected when mode is 
BYP.  The same problem does not exist if mode is MAN and state is Bypassed.  
Until this is fixed the solution is to avoid mode BYP (Mode MAN and state 
bypass is electrically identical).

73,
Andy, k3wyc
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[Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Andy Durbin]

"I cannot change the antenna selector via the front panel of the KAT500 or the 
utility software."

What was the KAT500 mode when you observed this problem?  There is a known 
firmware defect that may prevent enabled antennas being selected when mode is 
BYP.  The same problem does not exist if mode is MAN and state is Bypassed.  
Until this is fixed the solution is to avoid mode BYP (Mode MAN and state 
bypass is electrically identical).

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[Phil Hystad via Elecraft]

I have had a similar problem and in my case I was not looking at the right spot
for adjusting the antennas.

There are two different spots when using the KAT500 utility.  The Operate menu 
selection and then also the Configuration\Antennas selection. 

In my case, the Operate page would not let me change the antenna (nor the 
KAT500) because the configuration of antennas was not set up properly.  I have 
no idea how those got changed since they had been OK before but I reconfigured 
the antenna selection options and saved the configuration and everything worked 
correctly after that.

73, phil, K7PEH


> On Jun 13, 2021, at 8:15 AM, kk4dx  wrote:
> 
> Anyone have this happen to them?
> I cannot change the antenna selector via the front panel of the KAT500 or
> the utility software. The utility software is working as I can remotely
> cycle through the modes, but the antenna selector is stuck. All antenna
> positions are checked (enabled) in the utility software and when I advance
> to another position, the software moves the selection back to #2.
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] KAT500 Tuner antenna selection stuck in #2 position

[kk4dx]

Anyone have this happen to them?
I cannot change the antenna selector via the front panel of the KAT500 or
the utility software. The utility software is working as I can remotely
cycle through the modes, but the antenna selector is stuck. All antenna
positions are checked (enabled) in the utility software and when I advance
to another position, the software moves the selection back to #2.



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Re: [Elecraft] KAT500 Blinking "MAN" LED - Bad Astron P/S On/Off Switch

[Jim Brown]

On 5/3/2021 4:07 PM, John W2XS wrote:

The other day I turned on my Astron RS-35M and then my K3, P3, KAT500, and
KPA500. I've done this at least once per day for the last several years.
This time, however, I heard arcing from the Astron's on/off switch. Then I
saw that the KAT500 LED was blinking constantly about 3 times per second.


Every Astron I've checked had a manufacturing defect that fails to bond 
AC power line green wire to the chassis, thanks to paint under the lug 
to which it was soldered. In addition, the V- terminal is soldered to 
the same lug, connecting it to the green wire, but not to the chassis. I 
suspect that when the switch broke, it put some voltage on V- and 
failure to bond stuff properly in the shack coupled some voltage to the 
KAT500.


73, Jim K9YC



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[Elecraft] KAT500 Blinking "MAN" LED - Bad Astron P/S On/Off Switch

[John W2XS]

The other day I turned on my Astron RS-35M and then my K3, P3, KAT500, and
KPA500. I've done this at least once per day for the last several years.
This time, however, I heard arcing from the Astron's on/off switch. Then I
saw that the KAT500 LED was blinking constantly about 3 times per second. 
After doing some troubleshooting, I replaced the power supply switch with
one I had here but the tuner's LED kept blinking and the unit would not
respond to any key press, including the power button. I tried connecting the
KAT500 to the computer but there was no connection to be made. Then the
blinking changed frequency and got faster. Eventually, I was able to connect
and reload the KAT500 firmware and everything has been OK since.
I do have the KAT500 connected directly to the power supply since I am
powering a P3 and a PR6-10 from the K3's aux power connection. I noticed
that, normally, all the LEDs in the KAT500 would blink momentarily as the
power supply was turned on even though I have the KAT500 set to power-on in
the "off" position. Then it would power up and work fine.
Anyway, sorry for the verbage, but my theory is that the bad on/off switch
in the Astron corrupted the firmware in the KAT500. I don't know what the
blinking "man" LED meant, and I don't know why there were 2 different
blinking speeds. I built a little switch box to keep the KAT500 power
disconnected while the power supply comes on and settles down so as not to
have another problem in the future. 
(Marlin P Jones sells an in-line power on/off switch with a 2.1 mm barrel
plug on one end and a 2.1 mm barrel socket on the other end. I would have
used that except I cannot normally reach the back of the KAT500 in my
configuration).
73, John W2XS



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[Elecraft] KAT500 Locked on Ant 1

[Andy Durbin]

It may not be related to your problem but there is a documented issue with 
enabled antennas not being selectable in BPY mode.   Elecraft is aware of this 
issue.  Because of this problem I never use BYP mode.  I use BYP state in MAN 
mode which is electrically equivalent.

Andy, k3wyc
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Re: [Elecraft] KAT500 Locked on Ant 1

[richard gilley]

Hi,
Thank you Dick K6KR, and  Skip NC90 for your help.  I ended up doing a 
factory default, enabled the ant per band and all is well.  
One question:  After setting the configuration, saving, shutting down, and 
powering up I found in checking "edit  configuration" ant 1 and 3 were no 
longer enabled.  However, all worked as expected. Should the latest 
configuration show the antennas enabled?  Perhaps not?

Thank you again, saving me a ship to CA.

Very Best regards
Dick AD1G

> On Apr 29, 2021, at 20:23, richard gilley  wrote:
> 
> Looking for thoughts on my KAT500 that remains locked on Ant 1, cannot change 
> to ant 2, manually or via the Elecraft utility regardless of the mode 
> setting,   Set configuration to a later set up still no joy.  And of course 
> does not tune, no relay actions, no caps set or inductors shown in utility. 
> I am not aware of any electrical storms in the area.
> 
> Appreciate hearing from anyone who has an idea.
> 
> Thank you all.
> AD1G

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Re: [Elecraft] KAT500 Locked on Ant 1

[Dick Dievendorff]

One of your antennas might be disabled.

Check the KAT500 Utility, Configuration, Edit Configuration, Antennas tab.
Perhaps the "Enabled" checkbox is off for ANT2.  This is a per-band setting.

73 de Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of richard gilley
Sent: Thursday, April 29, 2021 17:23
To: George Pasek via Elecraft 
Subject: [Elecraft] KAT500 Locked on Ant 1

Looking for thoughts on my KAT500 that remains locked on Ant 1, cannot
change to ant 2, manually or via the Elecraft utility regardless of the mode
setting,   Set configuration to a later set up still no joy.  And of course
does not tune, no relay actions, no caps set or inductors shown in utility. 
I am not aware of any electrical storms in the area.

Appreciate hearing from anyone who has an idea.

Thank you all.
AD1G
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[Elecraft] KAT500 Locked on Ant 1

[richard gilley]

Looking for thoughts on my KAT500 that remains locked on Ant 1, cannot change 
to ant 2, manually or via the Elecraft utility regardless of the mode setting,  
 Set configuration to a later set up still no joy.  And of course does not 
tune, no relay actions, no caps set or inductors shown in utility. 
I am not aware of any electrical storms in the area.

Appreciate hearing from anyone who has an idea.

Thank you all.
AD1G
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Re: [Elecraft] KAT500 failure

[Andy Durbin]

"I've been at V1.75 firmware for quite some time but random lockups of the 
KAT500 started recently. It might be helpful knowing what command caused the 
problem."

Please establish a repeatable test method and report to Elecraft.  As I have 
said more than once, the issue I experienced does NOT happen in ver 1.75.  It 
would not be helpful to know what command caused the problem.

Andy, k3wyc

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Re: [Elecraft] KAT500 failure

[KK1W]

I've been at V1.75 firmware for quite some time but random lockups of the
KAT500 started recently.

It might be helpful knowing what command caused the problem.

Jim/KK1W


w4sc-2 wrote
> Andy reported.
> 
> “Several have asked for more detail.  All I can share is that the command
> that 
> repeatably caused my KAT500 to lockup does not cause a lockup when KAT
> firmware 
> version 1.75 (current released version) is in use.”
> 
> The possible paths to take are  obvious:
> 
> 1) UPDATE your firmware if older than rev 1.75.
> 2) If you have 1.75 installed AND experiencing a “lockup”, report the
> particulars to Elecraft support. Include complete and accurate detail.  
> 
> Read the firmware release notes for changes made that may have a bearing
> on your issue.
> 
> 73 de Ben W4SC
> 
> 
> Sent from Mail for Windows 10
> 
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> lists+1215531472858-365791@.nabble





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Re: [Elecraft] KAT500 failure

[w4sc]

Andy reported.

“Several have asked for more detail.  All I can share is that the command that 
repeatably caused my KAT500 to lockup does not cause a lockup when KAT firmware 
version 1.75 (current released version) is in use.”

The possible paths to take are  obvious:

1) UPDATE your firmware if older than rev 1.75.
2) If you have 1.75 installed AND experiencing a “lockup”, report the 
particulars to Elecraft support. Include complete and accurate detail.  

Read the firmware release notes for changes made that may have a bearing on 
your issue.

73 de Ben W4SC


Sent from Mail for Windows 10

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Re: [Elecraft] KAT500 failure

[Julia Tuttle]

Is there a reason to keep this a secret?

On Fri, Apr 9, 2021, 09:13 Andy Durbin  wrote:

> "My controller sent a valid command that the KAT500 firmware took
> exception to.  I'll withhold the details but other KAT500 users will not
> experience this problem."
>
> Several have asked for more detail.  All I can share is that the command
> that repeatably caused my KAT500 to lockup does not cause a lockup when KAT
> firmware version 1.75 (current released version) is in use.
>
> If others are experiencing problems with their KAT500 I'd suggest
> providing as much detail as possible to Elecraft.  I log every command I
> sent to my KAT500 so, once I had dismissed thermal failure, it was not
> difficult to isolate the lockup to a single command and to reproduce the
> lockup by sending that command with the KAT utility.
>
> Full details have been shared with KAT500 firmware developer.
>
> 73,
> Andy, k3wyc
>
>
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Re: [Elecraft] KAT500 failure

[Andy Durbin]

"My controller sent a valid command that the KAT500 firmware took exception to. 
 I'll withhold the details but other KAT500 users will not experience this 
problem."

Several have asked for more detail.  All I can share is that the command that 
repeatably caused my KAT500 to lockup does not cause a lockup when KAT firmware 
version 1.75 (current released version) is in use.

If others are experiencing problems with their KAT500 I'd suggest providing as 
much detail as possible to Elecraft.  I log every command I sent to my KAT500 
so, once I had dismissed thermal failure, it was not difficult to isolate the 
lockup to a single command and to reproduce the lockup by sending that command 
with the KAT utility.

Full details have been shared with KAT500 firmware developer.

73,
Andy, k3wyc


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Re: [Elecraft] KAT500 failure

[KK1W]

ANDY DURBIN wrote
> "It's still working over 30 minutes after the fridge cold soak."
> 
> I was tricked by confirmation bias.  The cold soak was not what fixed the
> problem.
> 
> My controller sent a valid command that the KAT500 firmware took exception
> to.  I'll withhold the details but other KAT500 users will not experience
> this problem.
> 
> 73,
> Andy, k3wyc
> 
> 
> 
> 
> 
> 
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> lists+1215531472858-365791@.nabble


Please share if possible. I'm having similar problems with my KAT500. Locks
up for no discernable reason, can't power down. Removing power for just a
few seconds and it's back to normal until the next random lockup.

In my case I'm feeding frequency info to the KAT500 from a RemoteQTH Band
decoder II. I'm running  KAT500/KPA500 combo with an IC7610.

Lockups seem to be totally random but the behavior just started recently,
the setup has been in place for over a year

Thanks,
Jim/KK1W.




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Re: [Elecraft] KAT500 failure

[Julia Tuttle]

Would you be willing to share it? I'm morbidly curious at this point.

On Thu, Apr 8, 2021, 23:02 Andy Durbin  wrote:

> "It's still working over 30 minutes after the fridge cold soak."
>
> I was tricked by confirmation bias.  The cold soak was not what fixed the
> problem.
>
> My controller sent a valid command that the KAT500 firmware took exception
> to.  I'll withhold the details but other KAT500 users will not experience
> this problem.
>
> 73,
> Andy, k3wyc
>
>
>
>
>
>
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Re: [Elecraft] KAT500 failure

[Andy Durbin]

"It's still working over 30 minutes after the fridge cold soak."

I was tricked by confirmation bias.  The cold soak was not what fixed the 
problem.

My controller sent a valid command that the KAT500 firmware took exception to.  
I'll withhold the details but other KAT500 users will not experience this 
problem.

73,
Andy, k3wyc






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Re: [Elecraft] KAT500 failure

[Victor Rosenthal 4X6GP]

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Re: [Elecraft] KAT500 failure

[Andy Durbin]

"I guess that the 10uF electric capacitor connected to LM7805 output is a 
possible cause."

All the front panel LED seem to be on that same 5V rail and they stay normal 
brightness in the fault condition.   I suspect something, other than low 
voltage is killing the MCU.

It's still working over 30 minutes after the fridge cold soak.

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 failure

[Keith Onishi]

I guess that the 10uF electric capacitor connected to LM7805 output is a 
possible cause.

73 de JH3SIF, Keith

> 2021/04/09 7:35、Andy Durbin のメール:
> 
> "I'm suspecting the KAT500 has a thermal problem.  Does anyone recognize 
> these symptoms and know a probable cause?"
> 
> I put it in the fridge for 30 minutes and now it powers up normally, connects 
> to KAT Utility and responds to utility commands.  It's clear it's a thermal 
> problem but which component?
> 
> Wish I still had a can of freezer spray.
> 
> Andy, k3wyc
> 
> 
> 
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Re: [Elecraft] KAT500 failure

[Andy Durbin]

"I'm suspecting the KAT500 has a thermal problem.  Does anyone recognize these 
symptoms and know a probable cause?"

I put it in the fridge for 30 minutes and now it powers up normally, connects 
to KAT Utility and responds to utility commands.  It's clear it's a thermal 
problem but which component?

Wish I still had a can of freezer spray.

Andy, k3wyc



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[Elecraft] KAT500 failure

[Andy Durbin]

My KAT500 has stopped communicating with my controller and does not power up 
normally.  With PC data cable removed, when I pull and replace the power plug 
the KAT500 powers up with a relay clunk and with MAN and ANT 1 LED lit. All 
front panel buttons are unresponsive.  The same thing happened a few weeks ago 
but it recovered after disconnecting and re-connecting power.

If I leave it disconnected for a while sometimes the KAT500 will power up and 
allow the mode to be changed once or twice then it locks up again.  I was once 
able to connect to the Utility but normally Utility does not see the KAT500.  
Most of the time KAT500 powers up showing MAN and ANT-1 and is completely 
unresponsive.

I took a break from composing this email and powered it again.  This time I was 
able to cycle the mode and antenna several times before it locked up showing 
MAN and ANT-3.

AZ is warming up and room temperature is nearly 29 deg C.  I'm suspecting the 
KAT500 has a thermal problem.  Does anyone recognize these symptoms and know a 
probable cause?

Thanks and 73,
Andy, k3wyc


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Re: [Elecraft] KAT500 Question - Manual Mode Light is Flashing

[Irwin KD3TB]

Andy,
I kept the KAT500 in auto tune mode &  I think I solved the problem...1) a
loose plug in the back of the KAT500 & 2) probably snow or frozen
participation on the antenna connection. Not sure what finally solved it,
but all seems to be well During the contest so far.

Tnx , Irwin KD3TB

On Fri, Feb 12, 2021 at 7:24 PM Andy Durbin  wrote:

> "When I have the Tuner in By-Pass Mode for an antenna with a low SWR, even
> when making small changes in the frequency, the Tune switches to MAN
> (Manual Mode) and the MAN light is flashing. How do I get it to stay in
> By-Pass Mode."
>
> One reason for flashing MAN is that KAT500 has entered auto tune mode and
> is waiting for sufficient power to start the solution search.  I don't know
> if this is the reason in your case.  Do you have the ability to log the
> commands your Flex is sending to KAT500?  Is it possible your Flex
> commanded autotune (FT;)?
>
> I never run my KAT500 in BYP mode after I found defects in the antenna
> selection logic when BYP mode is active.  I always run in MAN mode and MAN
> mode with bypass active is electrically identical to BYP mode as far as the
> tuning solution is concerned.
>
> Andy, k3wyc
>
>
>
>
>
>
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-- 
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[Elecraft] KAT500 Question - Manual Mode Light is Flashing

[Andy Durbin]

"When I have the Tuner in By-Pass Mode for an antenna with a low SWR, even when 
making small changes in the frequency, the Tune switches to MAN (Manual Mode) 
and the MAN light is flashing. How do I get it to stay in By-Pass Mode."

One reason for flashing MAN is that KAT500 has entered auto tune mode and is 
waiting for sufficient power to start the solution search.  I don't know if 
this is the reason in your case.  Do you have the ability to log the commands 
your Flex is sending to KAT500?  Is it possible your Flex commanded autotune 
(FT;)?

I never run my KAT500 in BYP mode after I found defects in the antenna 
selection logic when BYP mode is active.  I always run in MAN mode and MAN mode 
with bypass active is electrically identical to BYP mode as far as the tuning 
solution is concerned.

Andy, k3wyc






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[Elecraft] KAT500 Question - Manual Mode Light is Flashing

[Irwin KD3TB]

Set up: Flex 6500 with KAT500 & KPA500 using Elecrafts recommended settings

When I have the Tuner in By-Pass Mode for an antenna with a low SWR, even
when making small changes in the frequency, the Tune switches to MAN
(Manual Mode) and the MAN light is flashing. How do I get it to stay in
By-Pass Mode.

This recently started and not sure what changed? A setting in the KAT500
Config Mode?

Thanks,
--

-- 
Irwin KD3TB
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Re: [Elecraft] KAT500

[Rich NE1EE]

On 2021-02-06 08:38:-0500, ws6x@gmail.com wrote:
>Anyway, thanks for bearing with me while I outed this scammer.

Thanks for posting this thread. I really had my eyes opened on a subject I am 
naive about...

~R~
72/73 de Rich NE1EE
The Dusty Key
On the banks of the Piscataqua

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Re: [Elecraft] KAT500

[Grant Youngman]

Glad you got this figured out.  I was hit the same way on a WTB ad.  
Fortunately, the payment instructions in the offer to sell just didn’t smell 
quite right.  And sure enough, I contacted the supposed seller, and he didn’t 
know what I was talking about. 

It’s a “buyer beware” world out there .. 

Grant NQ5T

> On Feb 6, 2021, at 8:38 AM, ws6x@gmail.com wrote:
> 
> Hello Again,
> 
> Sorry for being so “mysterious” yesterday. Several of you have written, some 
> with helpful suggestions, but many being curious about what I thought was 
> “suspicious” about the KAT500 transaction. 
> 
> Briefly, I have learned when you place a “WTB:” ad on QTH.com, you often 
> encounter one of the lurking scammers, who will offer to sell you the item 
> you are wanting. They will spoof an unsuspecting, legitimate ham, who does 
> not include an email address in their QRZ listing. There are several 
> tell-tale signs of such an operation, and such was the case yesterday with 
> the offer to sell me KAT500, SN 0296.
> 
> I wrote this group yesterday, hoping that perhaps the rightful owner would 
> step forward. Sure enough, last evening the real owner of the equipment 
> contacted me. Interestingly, asking for a close-up photo clearly showing the 
> Serial Number will usually stop these guys in their tracks, but yesterday the 
> scammer provided me with that photo. These guys are becoming very 
> sophisticated.
> 

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[Elecraft] KAT500

[ws6x.ars]

Hello Again,

Sorry for being so “mysterious” yesterday. Several of you have written, some 
with helpful suggestions, but many being curious about what I thought was 
“suspicious” about the KAT500 transaction. 

Briefly, I have learned when you place a “WTB:” ad on QTH.com, you often 
encounter one of the lurking scammers, who will offer to sell you the item you 
are wanting. They will spoof an unsuspecting, legitimate ham, who does not 
include an email address in their QRZ listing. There are several tell-tale 
signs of such an operation, and such was the case yesterday with the offer to 
sell me KAT500, SN 0296.

I wrote this group yesterday, hoping that perhaps the rightful owner would step 
forward. Sure enough, last evening the real owner of the equipment contacted 
me. Interestingly, asking for a close-up photo clearly showing the Serial 
Number will usually stop these guys in their tracks, but yesterday the scammer 
provided me with that photo. These guys are becoming very sophisticated.

Anyway, thanks for bearing with me while I outed this scammer.

73 es Stay Safe,

Jim – WS6X

 

P.S. I’m still looking for a KAT500. Any offers?  

 

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[Elecraft] KAT500

[ws6x.ars]

Hello,

I have a guy trying to sell me a used KAT500, SN 0296. He sent me an actual
photo with the SN clearly showing. Also in the photo is KPA500 SN 0702.
Something seems suspicious. I did a Google image search, but the results
were inconclusive.

Does anyone in this group own, or has ever owned this pair?

Please contact me off list.

Thanks,

Jim - WS6X

 

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Re: [Elecraft] KAT500

[Jim Brown]

On 1/17/2021 12:53 PM, Jack W4GRJ wrote:

Is there anyway to set antenna selection to bypass when selected?
i have a dipole on ant one where I use the kat500
on ant two I have a random wire on outdoor tuner, I would like kat500 to always 
bypass when ant two is selected.


Yes. It's easy from the KAT500 Utility. Might require a bit of RTFM

73, Jim K9YC
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Re: [Elecraft] KAT500

[Jack Brindle via Elecraft]

Sure. Just select bypass for the antenna on the front panel. When you QSY to 
that band, the setting will take affect and the ATU will be in bypass mode.
I do this with my tribander, which does not need the ATU, just the switch.

73!
Jack, W6FB


> On Jan 17, 2021, at 12:53 PM, Jack W4GRJ  wrote:
> 
> Is there anyway to set antenna selection to bypass when selected?
> i have a dipole on ant one where I use the kat500
> on ant two I have a random wire on outdoor tuner, I would like kat500 to 
> always bypass when ant two is selected.
> 
> tnx
> Jack
> W4GRJ
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[Elecraft] KAT500

[Jack W4GRJ]

Is there anyway to set antenna selection to bypass when selected?
i have a dipole on ant one where I use the kat500
on ant two I have a random wire on outdoor tuner, I would like kat500 to always 
bypass when ant two is selected.

tnx
Jack
W4GRJ
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Re: [Elecraft] KAT500 lost serial comms - try factory defaults?

[Frank R. Oppedijk]

Hi all,

A follow-up on my problem: today I’ve opened up the belly of the KAT500 and 
have done some testing. With no USB cable connected and the KAT500 powered up, 
the Q1 drain voltage is 2.39V, where I would expect 5V. Also the gate voltage 
is 2.30V, where I would expect it to be floating. With the power off, I’ve 
measure the drain-gate resistance. It’s 5.5 k ohms. Oops!

My conclusion must be that Q1 has failed. So now I’m about to learn how to SMD 
components, hi hi.

Thanks for your help so far.

73 de Frank PA4N


> On 4 Dec 2020, at 17:35, Rick Bates, NK7I  wrote:
> 
> Frank,
> 
> I would start with a complete power removal (not just off) to the KAT500 and 
> the computer (unplugged from power).  Then go have a cuppa.  When you get 
> back, plug the power in and restart it and test.
> 
> I have found that some devices (more in the USB realm) occasionally 'stick' 
> when exposed to RF and that a long power removal is the only cure.  If it's a 
> frequent event, you have an RFI issue to deal with (better grounding and 
> bonding is the first place to start for that).
> 
> GL,
> Rick NK7I
> 
> 
> 
> On 12/4/2020 8:22 AM, Frank R. Oppedijk wrote:
>> Hi all,
>> 
>> I’ve used my KAT500 with pleasure for many years, but recently a problem has 
>> arisen: I’ve lost the serial communication feature. I’ve already swapped the 
>> KXUSB cable with another one (home-brew) so I’m pretty sure it’s not the 
>> KXUSB that’s gone kaput. And the PC is doing USB comms fine (e.g. the USB 
>> interfaces to my K3), so I guess it’s not the PC or the USB port either.
>> 
>> I’m contemplating trying a KAT500 factory reset. But two questions arise:
>> 1. Can I do a factory reset without having the serial comms working (so: can 
>> I do a factory reset other than from within the KAT500 Utility)?
>> 2. What antennas are enabled after a factory reset?
>> 
>> (Question 2 is because I have multiple antennas connected to the KAT500, and 
>> if the factory defaults would be that only ANT1 would be enabled, I would 
>> lose functionality until I’ve got the KAT500 repaired…)
>> 
>> Hope the collective wisdom of the group can help me out.
>> 
>> 73 de Frank PA4N
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---
drs. ing. Frank R. Oppedijk
QRD
Oostvaardersdiep 9
1309 AA  Almere
tel: 036 - 737 00 55
GSM: 06 - 26 214 365

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Re: [Elecraft] KAT500 lost serial comms - try factory defaults?

[Dick Dievendorff]

The KAT500 utility sends EEINIT;

SET format: EEINIT; erases EEPROM containing frequency memories, per-band
settings and all
configuration selections, including the current RS-232 speed. Configuration
and per-band settings are
formatted to default values during restart after a microcontroller reset.
EEINIT; does not change the
KAT500 serial number or its fault table.

RST0 and RST1 have to do with resetting (restarting) the microcontroller.

73 de Dick, K6KR



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Andy Durbin
Sent: Friday, December 4, 2020 09:29
To: elecraft@mailman.qth.net
Subject: [Elecraft] KAT500 lost serial comms - try factory defaults?

"2. What antennas are enabled after a factory reset?"

On all bands ANT 1, 2, and 3 are enabled and "preferred" is set to "last
used"

I don't know what the Utility sends for "Reset Configuration".  The
documented reset command is:

RSTx (Reset, SET only)
SET format: RST0; or RST1;
RST0; resets the microcontroller without saving state in EEPROM. This is
equivalent to removing the power plug and plugging it back in again. RST1;
simulates pressing the power off button which saves current state in EEPROM
before reset.
RST may be ignored while transmitting.

Neither RST0; nor RST1; appear to clear the memorized settings so I suspect
the Utility uses another command.  Now I may have to find out what that is


73,
Andy, k3wyc
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delivered to d...@elecraft.com 

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Re: [Elecraft] KAT500 lost serial comms - try factory defaults?

[Andy Durbin]

"Neither RST0; nor RST1; appear to clear the memorized settings so I suspect 
the Utility uses another command.  Now I may have to find out what that is  
 "


The  utility commanded reset sequence appears to be:

;
l;
eeinit;

KAT500 replies with its identity.

"EEINIT (Clear configuration and frequency memories, SET only)
SET format: EEINIT; erases EEPROM containing frequency memories, per-band 
settings and all configuration selections, including the current RS-232 speed. 
Configuration and per-band settings are formatted to default values during 
restart after a microcontroller reset. EEINIT; does not change the KAT500 
serial number or its fault table.
EEINIT; is ignored while the ATU is tuning or transmitting.
EEINIT is used by the KAT500 Utility Configuration page Reset to Factory 
Defaults button."

I expect the KAT500 could be reset with a terminal emulator but that would 
require KAT500 to be capable of receiving serial data input.  It seems very 
unlikely to me that a serial port issue would be fixed by the reset, unless 
caused by an incorrect baud setting.

73,
Andy, k3wyc
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[Elecraft] KAT500 lost serial comms - try factory defaults?

[Andy Durbin]

"2. What antennas are enabled after a factory reset?"

On all bands ANT 1, 2, and 3 are enabled and "preferred" is set to "last used"

I don't know what the Utility sends for "Reset Configuration".  The documented 
reset command is:

RSTx (Reset, SET only)
SET format: RST0; or RST1;
RST0; resets the microcontroller without saving state in EEPROM. This is 
equivalent to removing the power plug and plugging it back in again. RST1; 
simulates pressing the power off button which saves current state in EEPROM 
before reset.
RST may be ignored while transmitting.

Neither RST0; nor RST1; appear to clear the memorized settings so I suspect the 
Utility uses another command.  Now I may have to find out what that is 

73,
Andy, k3wyc
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Re: [Elecraft] KAT500 lost serial comms - try factory defaults?

[Rick Bates, NK7I]

Frank,

I would start with a complete power removal (not just off) to the KAT500 
and the computer (unplugged from power).  Then go have a cuppa.  When 
you get back, plug the power in and restart it and test.


I have found that some devices (more in the USB realm) occasionally 
'stick' when exposed to RF and that a long power removal is the only 
cure.  If it's a frequent event, you have an RFI issue to deal with 
(better grounding and bonding is the first place to start for that).


GL,
Rick NK7I



On 12/4/2020 8:22 AM, Frank R. Oppedijk wrote:

Hi all,

I’ve used my KAT500 with pleasure for many years, but recently a problem has 
arisen: I’ve lost the serial communication feature. I’ve already swapped the 
KXUSB cable with another one (home-brew) so I’m pretty sure it’s not the KXUSB 
that’s gone kaput. And the PC is doing USB comms fine (e.g. the USB interfaces 
to my K3), so I guess it’s not the PC or the USB port either.

I’m contemplating trying a KAT500 factory reset. But two questions arise:
1. Can I do a factory reset without having the serial comms working (so: can I 
do a factory reset other than from within the KAT500 Utility)?
2. What antennas are enabled after a factory reset?

(Question 2 is because I have multiple antennas connected to the KAT500, and if 
the factory defaults would be that only ANT1 would be enabled, I would lose 
functionality until I’ve got the KAT500 repaired…)

Hope the collective wisdom of the group can help me out.

73 de Frank PA4N
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[Elecraft] KAT500 lost serial comms - try factory defaults?

[Frank R. Oppedijk]

Hi all,

I’ve used my KAT500 with pleasure for many years, but recently a problem has 
arisen: I’ve lost the serial communication feature. I’ve already swapped the 
KXUSB cable with another one (home-brew) so I’m pretty sure it’s not the KXUSB 
that’s gone kaput. And the PC is doing USB comms fine (e.g. the USB interfaces 
to my K3), so I guess it’s not the PC or the USB port either.

I’m contemplating trying a KAT500 factory reset. But two questions arise:
1. Can I do a factory reset without having the serial comms working (so: can I 
do a factory reset other than from within the KAT500 Utility)?
2. What antennas are enabled after a factory reset?

(Question 2 is because I have multiple antennas connected to the KAT500, and if 
the factory defaults would be that only ANT1 would be enabled, I would lose 
functionality until I’ve got the KAT500 repaired…)

Hope the collective wisdom of the group can help me out.

73 de Frank PA4N
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[Elecraft] KAT500 FS

[Doug Eaton via Elecraft]

For Sale: KAT500 tuner, serial# 198X. Original owner and non-smoking home. 
$475.00 shipped to lower 48. n...@yahoo.com
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