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K3 VFO encoder noise?

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Joel R. Hallas

K3 VFO encoder noise?

While dabbling in the VHF contest this w/e, I noticed that there was low
level noise as I turned the main VFO knob. It just seemed to be on 6 meters.
It wasn't a big problem, but I think some rigs have s/w options that take
care of that, but I didn't see anything in the K3 menus. Should I pretend I
didn't notice, or is there something I'm missing that will eliminate this?

Regards, Joel Hallas, W1ZR
Westport, CT

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Joe Subich, W4TV-4

Re: K3 VFO encoder noise?

Joel,

See "K3 VFO Noise Mod, Rev C" in the K3 App Notes:
http://www.elecraft.com/K3/mods/K3_vfo_noise_mod_Rev_C.pdf

Note: "This mod also requires new K3 f/w, mcu 3.25 or later."

I don't know if your K3 predates the mod which was implemented in
production "About 09/01/09 (RF board Rev H3) and later."

73,

... Joe, W4TV

On 9/11/2012 1:53 PM, Joel Hallas wrote:

> While dabbling in the VHF contest this w/e, I noticed that there was low
> level noise as I turned the main VFO knob. It just seemed to be on 6 meters.
> It wasn't a big problem, but I think some rigs have s/w options that take
> care of that, but I didn't see anything in the K3 menus. Should I pretend I
> didn't notice, or is there something I'm missing that will eliminate this?
>
> Regards, Joel Hallas, W1ZR
> Westport, CT
>
>
> ______________________________________________________________
> 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
>

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wayne burdick

Re: K3 VFO encoder noise?

Administrator

In reply to this post by Joel R. Hallas

Joel Hallas wrote:

> While dabbling in the VHF contest this w/e, I noticed that there was
> low
> level noise as I turned the main VFO knob. It just seemed to be on 6
> meters.
> It wasn't a big problem, but I think some rigs have s/w options that
> take
> care of that, but I didn't see anything in the K3 menus.

Hi Joel,

This noise is typically not audible except on the highest bands with
very little band noise (or no antenna). You have a choice of methods
to eliminate it if necessary.

All of the following settings are per-band so you only need to try
them on affected bands:

1. Set MENU:VFO NR to ON.

2. If necessary, set MENU:RX SHFT to ON.

3. An alternative to (or supplement to) the above is to turn on the
regular receive noise reduction by holding the NR switch.

73,
Wayne
N6KR

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Oliver Dröse

Re: K3 VFO encoder noise?

Wayne,

Joel was talking about the K3, not the KX3. You certainly need a break from
KX3 firmware optimization, don't you? ;-)

73, Olli - DH8BQA

----- Original Message -----
From: "Wayne Burdick" <[hidden email]>
To: "Joel Hallas" <[hidden email]>
Cc: <[hidden email]>
Sent: Tuesday, September 11, 2012 8:13 PM
Subject: Re: [Elecraft] K3 VFO encoder noise?

> Joel Hallas wrote:
>
>> While dabbling in the VHF contest this w/e, I noticed that there was
>> low
>> level noise as I turned the main VFO knob. It just seemed to be on 6
>> meters.
>> It wasn't a big problem, but I think some rigs have s/w options that
>> take
>> care of that, but I didn't see anything in the K3 menus.
>
> Hi Joel,
>
> This noise is typically not audible except on the highest bands with
> very little band noise (or no antenna). You have a choice of methods
> to eliminate it if necessary.
>
> All of the following settings are per-band so you only need to try
> them on affected bands:
>
> 1. Set MENU:VFO NR to ON.
>
> 2. If necessary, set MENU:RX SHFT to ON.
>
> 3. An alternative to (or supplement to) the above is to turn on the
> regular receive noise reduction by holding the NR switch.
>
> 73,
> Wayne
> N6KR
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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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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Richard Squire - HB9ANM

Re: K3 VFO encoder noise?

In reply to this post by wayne burdick

wayne burdick wrote

1. Set MENU:VFO NR to ON.

2. If necessary, set MENU:RX SHFT to ON.

73,
Wayne
N6KR

I have K3 s/n 6699 and the latest firmware. But i can't find
MENU:VFO NR
and
MENU:RX SHFT
What do you mean, Wayne?

Maybe I'm tired - it's 10 p.m. here!

73

Richard - HB9ANM

Richard Squire - HB9ANM

Re: K3 VFO encoder noise?

In reply to this post by Oliver Dröse

Yes. Oliver, I suspected so.
The French call it "Deformation professionnelle"!

73

Richard - HB9ANM