K3 SUB-RX works , but not in diversity mode

[Klaus Dittrich]

SUB-RX works (gets signals) but not in diversity mode.

I assembled K3 serial# 8887 (FW-5.14) so far succesful but have
a problem with the SUB RX and diversity.


I plugged the coax from the BNC AUX-RX into the KRX3 at assembly time.

When I switch on the SUB RX it gets its antenna input from there,
which I can verify by plugging out the antenna connected to BNC AUX-RX
and do not hear anymore the signals received before.

So the connection between the antenna connected to AUX-RX and the
KRX3 is already established and working.

! When I now, while SUB is active, press and hold SUB, the diversity
! mode is established and the decimal point of VFO A starts blinking,
! I hear a relay switching noise out of the K3 and the signal received
! by the SUB-RX before went off.

So it looks to me as if the KRX3 is disconnected from my receiving
antenna by switching from SUB to SUB-diversity.

What gets switched at this moment and why?

Switching on diversity should only bind/link the SUB RX to VFO A
(the same as pressing A->B after changing frequency) but phase coupled
this time, or I am totally wrong?

Switching between Config:KRX3 ATU and AUX makes on difference,
and no relay clicking is audible.

Can anyone with a newer K3 (and new syntesizers) tell me if
he is oberserving the same behavior?

I am not quite shure if I have overlooked something at assembly
time or if this is a firmware bug.

--
73, Klaus, DF1TL
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[Elecraft mailing list]

Are you connecting a cable from the RX antenna Out to the AUX antenna In ?

If so why?



      From: Klaus Dittrich <[hidden email]>
 To: [hidden email]
 Sent: Friday, March 6, 2015 7:15 AM
 Subject: [Elecraft] K3 SUB-RX works , but not in diversity mode
   
SUB-RX works (gets signals) but not in diversity mode.

I assembled K3 serial# 8887 (FW-5.14) so far succesful but have
a problem with the SUB RX and diversity.


I plugged the coax from the BNC AUX-RX into the KRX3 at assembly time.

When I switch on the SUB RX it gets its antenna input from there,
which I can verify by plugging out the antenna connected to BNC AUX-RX
and do not hear anymore the signals received before.

So the connection between the antenna connected to AUX-RX and the
KRX3 is already established and working.

! When I now, while SUB is active, press and hold SUB, the diversity
! mode is established and the decimal point of VFO A starts blinking,
! I hear a relay switching noise out of the K3 and the signal received
! by the SUB-RX before went off.

So it looks to me as if the KRX3 is disconnected from my receiving
antenna by switching from SUB to SUB-diversity.

What gets switched at this moment and why?

Switching on diversity should only bind/link the SUB RX to VFO A
(the same as pressing A->B after changing frequency) but phase coupled
this time, or I am totally wrong?

Switching between Config:KRX3 ATU and AUX makes on difference,
and no relay clicking is audible.

Can anyone with a newer K3 (and new syntesizers) tell me if
he is oberserving the same behavior?

I am not quite shure if I have overlooked something at assembly
time or if this is a firmware bug.

--
73, Klaus, DF1TL
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[Klaus Dittrich]

Problem solved to my shame.

I forgot to install the coax cable from J4 of the auxiliary KSYN3A to J2
of the main KSYN3A according to page 14 at the KSYN3A manual.

Thanks to Wayne for pointing me to my failure.

So not the antenna connection was lost but the SUBRX simply got
no LO signal.

Compunctious but nevertheless happy because I am now able to enjoy
diversity receiving using my old R&S active antenna with the K3.

--
73, Klaus DF1TL
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[Gary Smith-2]

Klaus,

Read my post on 21 feb, I did exactly the same thing...

You are not alone.

Hihi

73,

Gary
KA1J

> Problem solved to my shame.
>
> I forgot to install the coax cable from J4 of the auxiliary KSYN3A to J2
> of the main KSYN3A according to page 14 at the KSYN3A manual.
>
> Thanks to Wayne for pointing me to my failure.
>
> So not the antenna connection was lost but the SUBRX simply got
> no LO signal.
>
> Compunctious but nevertheless happy because I am now able to enjoy
> diversity receiving using my old R&S active antenna with the K3.
>
> --
> 73, Klaus DF1TL
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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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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[Klaus Dittrich]

K3 SN 8887

MCU 5.14 / DSP 2.83 / FPF 1.19, 2/26/2015
Latest Production Release

I still see CONFIG: VCO:MD -- and calibration started (digits count
uwards) after leaving the menu but ends with an error after some time.


I assume this can be ignored, as the KSYN3A does not need calibration?

Or is the KSYN3A not recognized by the firmware?

--

73, Klaus, DF1TL
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[Eric Swartz - WA6HHQ]

The new KSYN3a does not need the synth cal step. As noted in the manual, that only applies to the older synthesizer.

73,

Eric
elecraft.com
_..._

> On Mar 22, 2015, at 7:39 AM, Klaus Dittrich <[hidden email]> wrote:
>
> K3 SN 8887
>
> MCU 5.14 / DSP 2.83 / FPF 1.19, 2/26/2015
> Latest Production Release
>
> I still see CONFIG: VCO:MD -- and calibration started (digits count uwards) after leaving the menu but ends with an error after some time.
>
>
> I assume this can be ignored, as the KSYN3A does not need calibration?
>
> Or is the KSYN3A not recognized by the firmware?
>
> --
>
> 73, Klaus, DF1TL
> ______________________________________________________________
> 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]

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[Klaus Dittrich]

Am 03/22/15 um 16:40 schrieb Eric Swartz - WA6HHQ, Elecraft:

> The new KSYN3a does not need the synth cal step. As noted in the manual, that only applies to the older synthesizer.
>
> 73,
>
> Eric
> elecraft.com
> _..._
>
>
>
>> On Mar 22, 2015, at 7:39 AM, Klaus Dittrich <[hidden email]> wrote:
>>
>> K3 SN 8887
>>
>> MCU 5.14 / DSP 2.83 / FPF 1.19, 2/26/2015
>> Latest Production Release
>>
>> I still see CONFIG: VCO:MD -- and calibration started (digits count uwards) after leaving the menu but ends with an error after some time.
>>
>>
>> I assume this can be ignored, as the KSYN3A does not need calibration?
>>
>> Or is the KSYN3A not recognized by the firmware?
>>
>> --
>>
>> 73, Klaus, DF1TL
>> ______________________________________________________________
>> 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]

Eric, thank you.

I think I have read in the release notes that the item VCO:MD does not
show up at all if the firmware has taken notice that a KSYN3a is installed.

Maybe something more for the todo list .. :-)

--
73, Klaus, DF1TL
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