Low SubRX audio below 20m

[K1LI]

On 30m and below, the sub RX audio is much lower in level than the main RX.  
I am set up to use the "SUB" audio control as the "balance" control between  
the main and SubRX audio levels (SPKRS: 2, SPKR+PH: no, SUB AF: balance).  
Both receivers get their RF from the main antenna. On 20m and above, this  
works fine - adjusting the control to the 12 o'clock position "centers" the  
stereo audio image between the two speakers. On 30m and below, however, the  
sub RX audio is much lower - the "balance" control is at about 3 o'clock  
(ie, injecting a much smaller amount of main RX audio) to "center" the  
stereo image. Thus, I have to "ride" this control when changing bands.

I am using the latest "public" firmware revision, but I believe I have had  
this problem for some time. I did purchase "matched" filters for the main  
and sub RX's, and I have re-checked to ensure that they are set up with the  
same parameters. The state of the AFX control has no perceptible effect and  
I see that AF GAIN and AF LIM cannot be set differently for main and sub RX.

Any thoughts on what is causing this? I don't see any previous mention in  
the reflector archives.

Brian K1LI K3 #2435 -- K2 #2070 -- K1 #270
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[K1LI]

Bob,

That fixed the problem. Thanks for the suggestion - the "master reset" is
always the last resort!

73 - Brian - K1LI

On Sun, Mar 22, 2009 at 8:18 PM, Robert Ansell <[hidden email]>wrote:

>  Hi Brian, yes I've experienced this and for me the fix was to do a hard
> reset but do not under any circumstances upload your config settings. Mine
> were for some reason corrupted. I did this and balance returned to center!
> Make sure you copy down on paper all your settings and put them back by
> hand. I wrote them all down rebooted then got them all back with a recal on
> the rig and mine was fixed. Talked to Elecraft on this one so the info comes
> from them. don't forget to save everything when you are done. Just for
> giggles I assume that you did a double strike on transfering all from vfo a
> to vfo b RIGHT?
>
> Bob Ansell
> K1WGM
>
> ----- Original Message -----
> *From:* [hidden email]
> *To:* Elecraft reflector <[hidden email]>
> *Sent:* Sunday, March 22, 2009 4:01 PM
> *Subject:* [Elecraft] Low SubRX audio below 20m
>
> On 30m and below, the sub RX audio is much lower in level than the main
> RX.
> I am set up to use the "SUB" audio control as the "balance" control
> between
> the main and SubRX audio levels (SPKRS: 2, SPKR+PH: no, SUB AF: balance).
> Both receivers get their RF from the main antenna. On 20m and above, this
> works fine - adjusting the control to the 12 o'clock position "centers"
> the
> stereo audio image between the two speakers. On 30m and below, however,
> the
> sub RX audio is much lower - the "balance" control is at about 3 o'clock
> (ie, injecting a much smaller amount of main RX audio) to "center" the
> stereo image. Thus, I have to "ride" this control when changing bands.
>
> I am using the latest "public" firmware revision, but I believe I have had
>
> this problem for some time. I did purchase "matched" filters for the main
> and sub RX's, and I have re-checked to ensure that they are set up with
> the
> same parameters. The state of the AFX control has no perceptible effect
> and
> I see that AF GAIN and AF LIM cannot be set differently for main and sub
> RX.
>
> Any thoughts on what is causing this? I don't see any previous mention in
> the reflector archives.
>
> Brian K1LI K3 #2435 -- K2 #2070 -- K1 #270
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <[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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