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Frequency Not Synced for Diversity Receive

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KY7M

Frequency Not Synced for Diversity Receive

I am setting up diversity receive using the AUX input for my receiving loop.
After holding the SUB button to turn on DIVERSITY, the speaker output is
obviously off between MAIN and SUB by a hundred Hz or more. I can hear the
same signal on the other speaker most of the time, but the tone is quite
different. I installed a pair of new synthesizer boards several months ago
and all else seems to be working properly. Any suggestions?

Lee, KY7M

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dmb@lightstream.net

Re: Frequency Not Synced for Diversity Receive

Hello Lee,

Make sure that you have installed the latest production firmware (MCU
5.38) for your K3. There was an issue related to using dissimilar filters
in the main and sub-receivers, which caused what you are experiencing.
That has been fixed, first in beta firmware a while ago, and now in the
production firmware.

73,
Dale, WA8SRA

dmb@lightstream.net

Re: Frequency Not Synced for Diversity Receive

In reply to this post by KY7M

Lee,

A correction to my previous response:

The fix for diversity w mismatched main/sub rx filters was actually
implemented in MCU 5.33 firmware back on 8-3-2015. Of course it's also in
the latest 5.38 firmware as well.

73,
Dale, WA8SRA

efortner

Re: Frequency Not Synced for Diversity Receive

Hi Lee,

I finished putting my k3s together last week and with help from Howard at
the Elecraft discovered most of my problems were coming from a bad tcxo. I
also have the sub receiver and want to do diversity receive with
A separate antenna. My sub receiver is working but I cannot receive any
signals from the Aux ant bnc port. I do not have the antenna tuner option so
have only the Ant 1 so239 and the bnc port with coax cable going to the rear
of radio into the sub receiver. Maybe have something set wrong. Anyone else
had this problem. Radio serial number 10326.

73,
Earl, K4KAY

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of
[hidden email]
Sent: Saturday, October 10, 2015 4:43 PM
To: KY7M
Cc: [hidden email]
Subject: Re: [Elecraft] Frequency Not Synced for Diversity Receive

Lee,

A correction to my previous response:

The fix for diversity w mismatched main/sub rx filters was actually
implemented in MCU 5.33 firmware back on 8-3-2015. Of course it's also in
the latest 5.38 firmware as well.

73,
Dale, WA8SRA

> I am setting up diversity receive using the AUX input for my receiving
> loop.
> After holding the SUB button to turn on DIVERSITY, the speaker output
> is obviously off between MAIN and SUB by a hundred Hz or more. I can
> hear the same signal on the other speaker most of the time, but the
> tone is quite different. I installed a pair of new synthesizer boards
> several months ago and all else seems to be working properly. Any
> suggestions?
>
>
>
> Lee, KY7M

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html Message
delivered to [hidden email]

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Mike K2MK

Re: Frequency Not Synced for Diversity Receive

Hi Earl,

Be sure to set.
CONFIG:KRX3.....ANT=BNC

73,
Mike K2MK

efortner wrote

Hi Lee,

I finished putting my k3s together last week and with help from Howard at
the Elecraft discovered most of my problems were coming from a bad tcxo. I
also have the sub receiver and want to do diversity receive with
A separate antenna. My sub receiver is working but I cannot receive any
signals from the Aux ant bnc port. I do not have the antenna tuner option so
have only the Ant 1 so239 and the bnc port with coax cable going to the rear
of radio into the sub receiver. Maybe have something set wrong. Anyone else
had this problem. Radio serial number 10326.

73,
Earl, K4KAY

Guy Olinger K2AV

Re: Frequency Not Synced for Diversity Receive

In reply to this post by KY7M

Hi Lee,

Make sure that CONFIG: VFO LNK is set to OFF. Then when you have done a
hold on SUB button, see that the second decimal point is blinking.

Mine currently reads one dot eight one seven dot six seven. The dot between
seven and six is blinking indicating diversity mode.

You do not have to link VFO's to enable diversity. Diversity does not use
two linked synthesizers. It runs both RX off of the A syn. B syn is used in
diversity only for transmit if you are doing "SPLIT" TX.

Good Luck and 73

Guy K2AV

On Sat, Oct 10, 2015 at 8:29 PM, KY7M <[hidden email]> wrote:

> I am setting up diversity receive using the AUX input for my receiving
> loop.
> After holding the SUB button to turn on DIVERSITY, the speaker output is
> obviously off between MAIN and SUB by a hundred Hz or more. I can hear the
> same signal on the other speaker most of the time, but the tone is quite
> different. I installed a pair of new synthesizer boards several months ago
> and all else seems to be working properly. Any suggestions?
>
>
>
> Lee, KY7M
>
>
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>