[Elecraft] KAT500 Anomalies

[Lyn Norstad]

Don -

Thanks for that.  Rick had some good ideas as well.

It just dawned on me that part of my confusion came about as a result of using the KAT500 Utility from day 1.  If I was just working from the front panel, the whole distinction between Automatic and Manual would have made more sense.

But with the Utility and the separate Memorize button, that distinction is lost.  At least for me.  :)

73
Lyn, W0LEN


-----Original Message-----
From: Don Wilhelm [mailto:donwilh at embarqmail.com] 
Sent: Monday, November 23, 2020 5:24 PM
To: Lyn at LNAINC.com; 'Rick Bates, NK7I'; elecraft at mailman.qth.net
Subject: Re: [Elecraft] KAT500 Anomalies

Lyn,

I think you are 'getting caught up in the semantics' - let me try a 
brief explanation.

Once the tuner knows the proper L/C combination for each frequency bin, 
it will switch to those settings in MAN mode.  It will NOT try to autotune.

If you switch to a different antenna on that particular antenna port, 
you will have to 'teach' the tuner again, which means going back into 
AUTO mode and transmitting in each bin's frequency so it learns what the 
L/C combinations are for each bin.  Once that has been done, switch to 
MAN mode and operate.

If you are using a remote antenna switch, things get complicated, but if 
you have only 3 antennas, it is easy.

73,
Don W3FPR

On 11/23/2020 5:34 PM, Lyn Norstad wrote:
> Thanks, Rick.  I try to pay attention to all those points, and really haven't seen this behavior until today.
> 
> I still find the distinction between Auto and Manual modes a little fuzzy.  Are you doing the "teaching" in Auto mode, but saying that operating should be in Manual mode ... like I think you're saying?  Do you change the default setup, which has both boxes checked for QSY re-tuning?
> 
> And then this:
> 
> " Then you put the tuner into manual mode; which still adjusts the matching values as the frequency changes BUT disables the retune feature."
> 
> How does it adjust the matching values without retuning?  Are we saying just tiny little baby-step fine tuning? Or am I getting caught up in semantics?
>