K3: activating sub receiver disables tx ?

[ww2r2]

I wonder if anyone else has experienced the following? (and what the cure
was?)

In a k3 with atu xverter interface and subrx.

Ant 1 is selected

vfo a is set to cw mode and receives OK. Keying it shows rf output on the k3
power meter and the external power meter

vfo b is set to cw mode on the same band. Doing an a/b swap and it receives
OK, Keying it shows rf output on the k3 power meter and the external power
meter

if I activate split (rx a tx b) using the above settings, keying shows rf
output on the k3 power meter and the external power meter

however if I activate the subreceiver with split (still) enabled keying
shows NO rf output on the k3 power meter and NO rf on the external power
meter. A signal can be heard on a monitor receiver.


Also if I leave the subreceiver activated and turn off the split (no split)
keying still shows NO rf output on the k3 power meter and NO rf on the
external power meter. A signal can be heard on a monitor receiver

using <bset> <ant> changes the subrx receive path as expected but doesnt
affect the tx output

I was using the 2.82 software. I rolled back to 2.76 but still have the same
issue

Dave

ww2r


______________________________________________________________
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

[Barry Simpson]

Hi Dave

I do not have the problem you are experiencing. My K3 works fine in split in
transmit with the sub receiver on.

I hope you find the problem.

73

Barry  VK2BJ




______________________________________________________________
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

[ww2r2]

Thanks to information from Charles Allen (who suffered the same issue) and
help from  Dale at elecraft,  the problem has now been identified as a subin
board production defect

The inductor (L3) that supples bias to switch the tx/rx pin diode to the tx
path on the board was not, and had never been fitted, hence drive doesnt get
switched to the tx path

The missing inductor is on its way from CA

The board was supplied with the subrx last november.  Wayne assures me all
subin boards are now 100% tested

Dave

ww2r




Message: 11
Date: Sat, 14 Feb 2009 02:09:47 -0500
From: [hidden email]
Subject: [Elecraft] K3: activating sub receiver disables tx ?
To: [hidden email]
Message-ID:
        <S359335AbZBNHJs/[hidden email]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1"

I wonder if anyone else has experienced the following? (and what the cure
was?)

In a k3 with atu xverter interface and subrx.

Ant 1 is selected

vfo a is set to cw mode and receives OK. Keying it shows rf output on the k3
power meter and the external power meter

vfo b is set to cw mode on the same band. Doing an a/b swap and it receives
OK, Keying it shows rf output on the k3 power meter and the external power
meter

if I activate split (rx a tx b) using the above settings, keying shows rf
output on the k3 power meter and the external power meter

however if I activate the subreceiver with split (still) enabled keying
shows NO rf output on the k3 power meter and NO rf on the external power
meter. A signal can be heard on a monitor receiver.


Also if I leave the subreceiver activated and turn off the split (no split)
keying still shows NO rf output on the k3 power meter and NO rf on the
external power meter. A signal can be heard on a monitor receiver

using <bset> <ant> changes the subrx receive path as expected but doesnt
affect the tx output

I was using the 2.82 software. I rolled back to 2.76 but still have the same
issue

Dave

ww2r


______________________________________________________________
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

[ww2r2]

The missing L3 has arrived and after installing it I now have transmit
output when the subrx is activated

Dave

ww2r

-----Original Message-----
From: [hidden email] [mailto:[hidden email]]
Sent: Tuesday, February 17, 2009 12:15 PM
To: [hidden email]
Subject: RE: [Elecraft] K3: activating sub receiver disables tx ?


Thanks to information from Charles Allen (who suffered the same issue) and
help from  Dale at elecraft,  the problem has now been identified as a subin
board production defect

The inductor (L3) that supples bias to switch the tx/rx pin diode to the tx
path on the board was not, and had never been fitted, hence drive doesnt get
switched to the tx path

The missing inductor is on its way from CA

The board was supplied with the subrx last november.  Wayne assures me all
subin boards are now 100% tested

Dave

ww2r




Message: 11
Date: Sat, 14 Feb 2009 02:09:47 -0500
From: [hidden email]
Subject: [Elecraft] K3: activating sub receiver disables tx ?
To: [hidden email]
Message-ID:
        <S359335AbZBNHJs/[hidden email]>
Content-Type: text/plain; format=flowed; charset="iso-8859-1"

I wonder if anyone else has experienced the following? (and what the cure
was?)

In a k3 with atu xverter interface and subrx.

Ant 1 is selected

vfo a is set to cw mode and receives OK. Keying it shows rf output on the k3
power meter and the external power meter

vfo b is set to cw mode on the same band. Doing an a/b swap and it receives
OK, Keying it shows rf output on the k3 power meter and the external power
meter

if I activate split (rx a tx b) using the above settings, keying shows rf
output on the k3 power meter and the external power meter

however if I activate the subreceiver with split (still) enabled keying
shows NO rf output on the k3 power meter and NO rf on the external power
meter. A signal can be heard on a monitor receiver.


Also if I leave the subreceiver activated and turn off the split (no split)
keying still shows NO rf output on the k3 power meter and NO rf on the
external power meter. A signal can be heard on a monitor receiver

using <bset> <ant> changes the subrx receive path as expected but doesnt
affect the tx output

I was using the 2.82 software. I rolled back to 2.76 but still have the same
issue

Dave

ww2r


______________________________________________________________
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