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KAT3 ATU question

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John Sweeney

KAT3 ATU question

Question regarding the KAT3, internal ATU in K3. This is not clear to me in
the product description.

Does the KAT3 retune along with the VFO frequency, once memories are stored,
without RF sent through it? Or, is Tune with transmit RF required for the
ATU to sense the frequency and tune for best match? I believe the
KAT500 adjusts based on rx frequency, but not sure about the KAT3.

Thanks

John , N3WT

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Dick Dievendorff-4

Re: KAT3 ATU question

Yes, the K3 does a "memory recall tune" on QSY without transmit

73 de Dick, K6KR

Sent from my iPhone

> On Sep 27, 2014, at 15:22, John Sweeney <[hidden email]> wrote:
>
>
> Question regarding the KAT3, internal ATU in K3. This is not clear to me in
> the product description.
>
> Does the KAT3 retune along with the VFO frequency, once memories are stored,
> without RF sent through it? Or, is Tune with transmit RF required for the
> ATU to sense the frequency and tune for best match? I believe the
> KAT500 adjusts based on rx frequency, but not sure about the KAT3.
>
> Thanks
>
> John , N3WT
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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wayne burdick

Re: KAT3 ATU question

Administrator

In reply to this post by John Sweeney

The KAT3 doesn't recall LC settings just due to VFO rotation, although this is on the wish-list. The K3 will, however, send frequency commands to an attached KAT500 tuner as the VFO is moved.

The KAT3 does recall LC settings when you use certain controls, including BAND UP/DN, FREQ ENT., M>V (memory recall), VFO A/B SWAP, VFO REVerse, etc.

Since the KAT3's relays are all driven at the same time (in parallel), transmitting in a different part of the band loads new LC settings so quickly that it doesn't interfere with CW element length.

73,
Wayne
N6KR

On Sep 27, 2014, at 3:22 PM, "John Sweeney" <[hidden email]> wrote:

>
> Question regarding the KAT3, internal ATU in K3. This is not clear to me in
> the product description.
>
> Does the KAT3 retune along with the VFO frequency, once memories are stored,
> without RF sent through it? Or, is Tune with transmit RF required for the
> ATU to sense the frequency and tune for best match? I believe the
> KAT500 adjusts based on rx frequency, but not sure about the KAT3.
>
> Thanks
>
> John , N3WT
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Dick Dievendorff-4

Re: KAT3 ATU question

In reply to this post by Dick Dievendorff-4

Looks like I got it wrong. Sorry, John.

Dick, K6KR

-----Original Message-----
From: Dick Dievendorff [mailto:[hidden email]]
Sent: Saturday, September 27, 2014 3:32 PM
To: John Sweeney
Cc: Elecraft Reflector
Subject: Re: [Elecraft] KAT3 ATU question

Yes, the K3 does a "memory recall tune" on QSY without transmit

73 de Dick, K6KR

Sent from my iPhone

> On Sep 27, 2014, at 15:22, John Sweeney <[hidden email]> wrote:
>
>
> Question regarding the KAT3, internal ATU in K3. This is not clear to
> me in the product description.
>
> Does the KAT3 retune along with the VFO frequency, once memories are
stored,
> without RF sent through it? Or, is Tune with transmit RF required for
the

> ATU to sense the frequency and tune for best match? I believe the
> KAT500 adjusts based on rx frequency, but not sure about the KAT3.
>
> Thanks
>
> John , N3WT
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]

John Sweeney

Re: KAT3 ATU question

In reply to this post by wayne burdick

Thank you Wayne. I understand about the KAT3 now, keep that wish list
going. Now to decide if go with the KAT3 or KAT500. I use a manual
tuner now. While remote, kind of tuff to get my dog to adjust the manual
tuner.

73 John N3WT

-----Original Message-----
From: Wayne Burdick [mailto:[hidden email]]
Sent: Saturday, September 27, 2014 8:30 PM
To: John Sweeney
Cc: 'Elecraft Reflector'
Subject: Re: [Elecraft] KAT3 ATU question

The KAT3 doesn't recall LC settings just due to VFO rotation, although this
is on the wish-list. The K3 will, however, send frequency commands to an
attached KAT500 tuner as the VFO is moved.

The KAT3 does recall LC settings when you use certain controls, including
BAND UP/DN, FREQ ENT., M>V (memory recall), VFO A/B SWAP, VFO REVerse, etc.

Since the KAT3's relays are all driven at the same time (in parallel),
transmitting in a different part of the band loads new LC settings so
quickly that it doesn't interfere with CW element length.

73,
Wayne
N6KR

On Sep 27, 2014, at 3:22 PM, "John Sweeney" <[hidden email]> wrote:

>
> Question regarding the KAT3, internal ATU in K3. This is not clear to
> me in the product description.
>
> Does the KAT3 retune along with the VFO frequency, once memories are
stored,
> without RF sent through it? Or, is Tune with transmit RF required for
the