[Elecraft] KAT500 LC settings recall -- complete explanation

[Dick Dievendorff]

You can retune to a prior memory setting by sending a serial command, MT
xxxx; where xxxx is the frequency in kHz.  

But as you note, it requires a serial connection. But if you're not counting
Tx frequency, you'd need some sort of connection to adjust the tuner...

73 de Dick, K6KR


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Larry Phipps
Sent: Wednesday, December 26, 2012 11:29 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KAT500 LC settings recall -- complete explanation

I have been reading some of the KAT500 traffic and thought I'd weigh in with
my particular thoughts.

One reason to have the tuner follow the VFO is that I would like to use the
KAT500 for receive sometimes for SWL'ing or listening to BCB. In this case,
I can't transmit, so it would be nice to have the tuner track the VFO.

One option is to use the utility to manually select settings, but my
KAT500 is remoted at the base of my antenna in a waterproof box. A USB cable
of the required length is not feasible, but I am looking into using a
wireless USB extender for the task. I already have some wireless
RS232 serial extenders, but have never tried one for USB. The prices are all
over the place. Does anyone have any experience with these devices, with or
without the KAT500? Would they be safe for flashing firmware?

Even with the utility connected, though, there doesn't appear to be any easy
way to save setups based on names or frequencies. Maybe I've missed it since
I'm not using the utility.

73,
Larry N8LP



On 12/25/2012 12:00 PM, elecraft-request at mailman.qth.net wrote:
> Date: Mon, 24 Dec 2012 12:54:36 -0800
> From: Wayne Burdick<n6kr at elecraft.com>
> To: ab2tc<ab2tc at arrl.net>
> Cc:elecraft at mailman.qth.net
> Subject: [Elecraft] KAT500 LC settings recall -- complete explanation
> 	(including auxBus tradeoffs)
> Message-ID:<C5BE2D64-B735-4503-A2BF-897794ECFCE2 at elecraft.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
>
> So what we're talking about now is whether it would be worth sending 
> frequency data from the K3 to the KAT500--at the time of keying--over 
> either the auxBus or the RS232 port. The answer, IMHO, is no. In 
> either case it would take approximately the same amount of time to 
> send the data as it would for the KAT500 to do RF sensing of the VFO 
> frequency.
>
> If someone has a better idea or would like to explain their operating 
> scenario further, I'm all ears.
>
> 73,
> Wayne
> N6KR


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