[Elecraft] Question about K3: ATU function

[Gary Gregory]

You will see 'ATU' flash when you TX if the swr is high enough and the ATU
will settle on an existing memory.

Well at least mine does...:-)

Gary

On 26 June 2011 06:04, Ron D'Eau Claire <ron at cobi.biz> wrote:

> The ATU requires you to tell it to tune by tapping the ATU TUNE switch.
>
> Keep in mind that a 1:1 SWR is pretty meaningless. You won't see any
> degradation in your signal if your SWR is 1.5:1 or even 2:1.
>
> How far you can QSY before the SWR is an issue depends entirely on your
> antenna system. The KAT3 ATU retains up to 30 frequencies in each band in
> memory, so you only need to let it cycle looking for best match once in
> each
> frequency range (unless you change your antenna). After that when you tap
> ATU TUNE it will instantly switch to the memorized settings for that
> frequency.
>
> If you forget to do the initial tune or something in your antenna setup
> changes, you'll see your SWR is high. Excessive SWR over time will trigger
> an error message at the K3 - either HIGH SWR or EXCESSIVE CURRENT (since
> transmitting into poor match will cause the PA current to rise). Tap the
> ATU
> TUNE switch to retune.
>
> See "Transmit, ATU, and Antenna Controls" in your Owner's manual Quick
> Start
> Guide (pg 6 in the Rev 9 manual) for more details.
>
> Ron AC7AC
>
>
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of tomb18
> Sent: Saturday, June 25, 2011 11:59 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] Question about K3: ATU function
>
> Hi,
>
> Second question: Does one need to press the ATU tune button at each
> frequency of use?  What happens if you forget?  Will the K3 automatically
> try to tune?
>
> Thanks
>
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