A/B diversity switch

[Ralph Parker]

>1. Turn SUB off (so the SUB icon does not show on the display).
>2. hold SUB continuously for 4 seconds and note whether DVRSTY appears...

Tnx Bill, got it. Works for me now.
I see that I have to approach this from the UNLINK mode -
if I start from LINK mode, I don't get the DIVERSITY message.
So both VFOs are tracking (with 'A' knob, decimal blinking),
even though the 'B' frequency indication doesn't change.

I have yet to try SPLIT mode with this.
Gotta wait for 160 to show some life tonight (AUX ant only works on 160).

VE7XF

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[Richard Ferch]

VE7XF wrote:
> I see that I have to approach this from the UNLINK mode -
> if I start from LINK mode, I don't get the DIVERSITY message.
> So both VFOs are tracking (with 'A' knob, decimal blinking),
> even though the 'B' frequency indication doesn't change.

Actually, in diversity mode I believe both receivers are using VFO A.
That's why the VFO B display doesn't change; VFO B is not affected by
the VFO A knob (the VFO A knob affects VFO B in linked mode, but not in
diversity mode). VFO B is still controlled by the VFO B knob, and it is
used by the transmitter in SPLIT mode, just the same as in a
one-receiver K3.

My mental model is as follows: the VFOs and the receivers are actually
independent. The first receiver is always controlled by VFO A, but the
second receiver can be controlled by either VFO (A = diversity, B = all
other modes). The transmitter may be controlled by either VFO (A =
non-split, B = split). The VFOs each have their own control knobs, but
in LINK mode frequency change directives from the VFO A knob are also
fed to VFO B.

73,
Rich VE3KI

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[Bill W4ZV]

Ralph Parker wrote

>1. Turn SUB off (so the SUB icon does not show on the display).
>2. hold SUB continuously for 4 seconds and note whether DVRSTY appears...

Tnx Bill, got it. Works for me now.
I see that I have to approach this from the UNLINK mode -
if I start from LINK mode, I don't get the DIVERSITY message.
So both VFOs are tracking (with 'A' knob, decimal blinking),
even though the 'B' frequency indication doesn't change.

I have yet to try SPLIT mode with this.
Gotta wait for 160 to show some life tonight (AUX ant only works on 160).

SPLIT works in Diversity like it does with a single RX.  Press SPLIT, and hold REV while you set your TX frequency, release REV and you are back on the DX frequency.  I also LOCK VFOA so I don't lose the DX if I accidentally bump a knob.  I operated for years with a TS-930S and learned to press REV while tuning the pileup with my left hand (index finger on TF-SET in TS-930 nomenclature and pinky on the VFO).

I'm in Diversity 99.9% of the time but set up a macro to be able to quickly switch from Diversity mode to split pileup mode with the RXs separated (on the pileup and DX frequencies).  K6KR documented this in his K3 Utility examples of macros.  There is also a macro to go back into Diversity from Dual RX split mode.  As you discovered manually, the macro must first exit SUB and then enter Diversity.  I only need to go into split pileup mode for truly massive pileups spread over many kHz.  If it's a smaller pileup, I just stay in Diversity-Split and use REV to find the station the DX is working.

73,  Bill

[Mike K2MK]

Hi Ralph:

If you see the decimal point blinking you ARE in diversity. Both the main
and sub RX are controlled by VFO A. The lower display is not associated with
diversity. The lower display and the VFO B knob would be used for split
operation and can be linked or unlinked to VFO A.

If you turn diversity off then VFO B would be your sub RX receive frequency
as well as your split frequency. Sometimes it is a little tricky to turn
diversity off. Always look to see if the decimal is blinking. That's the
only way to know for sure if diversity is on or off.

73,
Mike K2MK


Ralph Parker
Thu, 10 Dec 2009 11:27:30 -0800

>1. Turn SUB off (so the SUB icon does not show on the display).
>2. hold SUB continuously for 4 seconds and note whether DVRSTY appears...

Tnx Bill, got it. Works for me now.
I see that I have to approach this from the UNLINK mode -
if I start from LINK mode, I don't get the DIVERSITY message.
So both VFOs are tracking (with 'A' knob, decimal blinking),
even though the 'B' frequency indication doesn't change.

I have yet to try SPLIT mode with this.
Gotta wait for 160 to show some life tonight (AUX ant only works on 160).

VE7XF
 

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[wb6rse1]

On Dec 10, 2009, at 1:49 PM, K2MK wrote:

If you see the decimal point blinking you ARE in diversity
________

Also - IF you HOLD the RX ANT button you can toggle the input to the  
second RX.

73! Steve WB6RSE
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[w7aqk]

Turning diversity on only takes 2 seconds (I timed it) on my
K3.  Turning it off only takes a quick tap.

Dave W7AQK


----- Original Message -----
From: "K2MK" <[hidden email]>
To: "Elecraft Reflector" <[hidden email]>
Sent: Thursday, December 10, 2009 2:49 PM
Subject: Re: [Elecraft] A/B diversity switch

> Hi Ralph:
>
> If you see the decimal point blinking you ARE in
> diversity. Both the main
> and sub RX are controlled by VFO A. The lower display is
> not associated with
> diversity. The lower display and the VFO B knob would be
> used for split
> operation and can be linked or unlinked to VFO A.
>
> If you turn diversity off then VFO B would be your sub RX
> receive frequency
> as well as your split frequency. Sometimes it is a little
> tricky to turn
> diversity off. Always look to see if the decimal is
> blinking. That's the
> only way to know for sure if diversity is on or off.
>
> 73,
> Mike K2MK
>
>
> Ralph Parker
> Thu, 10 Dec 2009 11:27:30 -0800
>
>>1. Turn SUB off (so the SUB icon does not show on the
>>display).
>>2. hold SUB continuously for 4 seconds and note whether
>>DVRSTY appears...
>
> Tnx Bill, got it. Works for me now.
> I see that I have to approach this from the UNLINK mode -
> if I start from LINK mode, I don't get the DIVERSITY
> message.
> So both VFOs are tracking (with 'A' knob, decimal
> blinking),
> even though the 'B' frequency indication doesn't change.
>
> I have yet to try SPLIT mode with this.
> Gotta wait for 160 to show some life tonight (AUX ant only
> works on 160).
>
> VE7XF
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> 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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[Jim Brown-10]

On Thu, 10 Dec 2009 16:37:34 -0700, David Yarnes wrote:

>Turning diversity on only takes 2 seconds

"ONLY" 2 seconds is forever in a contest! That's why W4ZV developed
his macro -- he just finished working ARRL 160M. :)

73,

Jim K9YC



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