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K3s - No transmit

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Gary Smith-2

K3s - No transmit

I just added some filters to the K3s and configured the filters with
the K3 config. The radio hears perfectly on all the modes and the
filters are working beautifully. now however, it does not transmit.
It is not in test mode.

I did nothing else to the radio while I had it open.

Tapping a key, SSB or pressing XMIT and there is zero output.this at
1W or 25W.

The red TX LED lights.

It signals the relay in the amp properly.

On the P3 transmit monitor I see .02-.03W PEP registering, no SWR
reading and the LP-100A shows no sign of a signal.

I restored a known good configuration with no change.

No error messages are showing, no warning message on startup.

13.6 V on the K3 meter.

trying the ATU, it shows 5W on the display, relays clack, no output
on the P3 output except that .02-.03W & nothing on the LP100A

I have triple checked to be sure all the coax to the Synths, TXCO &
Sub are attached properly.

I have made sure all the connections to the sub RX are inserted
properly.

I must be missing something obvious. Any ideas what I might look at?

Thanks

Gary
KA1J
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Kevin Stover

Re: K3s - No transmit

Open up the utility again and make sure you have specified a transmit
filter for all modes.

On 4/27/2016 7:51 PM, Gary Smith wrote:

> I just added some filters to the K3s and configured the filters with
> the K3 config. The radio hears perfectly on all the modes and the
> filters are working beautifully. now however, it does not transmit.
> It is not in test mode.
>
> I did nothing else to the radio while I had it open.
>
> Tapping a key, SSB or pressing XMIT and there is zero output.this at
> 1W or 25W.
>
> The red TX LED lights.
>
> It signals the relay in the amp properly.
>
> On the P3 transmit monitor I see .02-.03W PEP registering, no SWR
> reading and the LP-100A shows no sign of a signal.
>
> I restored a known good configuration with no change.
>
> No error messages are showing, no warning message on startup.
>
> 13.6 V on the K3 meter.
>
> trying the ATU, it shows 5W on the display, relays clack, no output
> on the P3 output except that .02-.03W & nothing on the LP100A
>
> I have triple checked to be sure all the coax to the Synths, TXCO &
> Sub are attached properly.
>
> I have made sure all the connections to the sub RX are inserted
> properly.
>
> I must be missing something obvious. Any ideas what I might look at?
>
> Thanks
>
> Gary
> KA1J
> ______________________________________________________________
> 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]
>

--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441

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Gary Smith-2

Re: K3s - No transmit

In reply to this post by Gary Smith-2

There is:

2.8K is for CW and SSB
6K is for AM and the FM is checked by default.

Installed in the main is:
FL1 6K - {AM}
FL2 2.8K - {CW & SSB}
FL3 1K
FL4 400 Hz
FL5 200 Hz

Sub:
FL1 6K
FL2 2.7K
FL3 1K
FL4 500 Hz
FL5 250 Hz

When running through Config I only see FL4 listed, no other filters
show up as in FL5, FL3, FL2 & FL1

FL4 Config options read:

FL4 BW rF .40
FL4 FREQ rF 0.00
FL4 GN rF 0db
FL4 ON rF yes
FLTX SB FL2

73,

Gary
KA1J

> Open up the utility again and make sure you have specified a transmit
> filter for all modes.
>
> On 4/27/2016 7:51 PM, Gary Smith wrote:
> > I just added some filters to the K3s and configured the filters with
> > the K3 config. The radio hears perfectly on all the modes and the
> > filters are working beautifully. now however, it does not transmit.
> > It is not in test mode.
> >
> > I did nothing else to the radio while I had it open.
> >
> > Tapping a key, SSB or pressing XMIT and there is zero output.this at
> > 1W or 25W.
> >
> > The red TX LED lights.
> >
> > It signals the relay in the amp properly.
> >
> > On the P3 transmit monitor I see .02-.03W PEP registering, no SWR
> > reading and the LP-100A shows no sign of a signal.
> >
> > I restored a known good configuration with no change.
> >
> > No error messages are showing, no warning message on startup.
> >
> > 13.6 V on the K3 meter.
> >
> > trying the ATU, it shows 5W on the display, relays clack, no output
> > on the P3 output except that .02-.03W & nothing on the LP100A
> >
> > I have triple checked to be sure all the coax to the Synths, TXCO &
> > Sub are attached properly.
> >
> > I have made sure all the connections to the sub RX are inserted
> > properly.
> >
> > I must be missing something obvious. Any ideas what I might look at?
> >
> > Thanks
> >
> > Gary
> > KA1J
> > ______________________________________________________________
> > 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]
> >
>
>
> --
> R. Kevin Stover
> AC0H
> ARRL
> FISTS #11993
> SKCC #215
> NAQCC #3441
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> ______________________________________________________________
> 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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Don Wilhelm

Re: K3s - No transmit

Gary,

If K3 Utility does not do the job for you, use the K3 menu directly -
see page 51 in the manual.

Go into the menu and set all your filters to ON. Set FLx BW, FLx FRQ,
FLxGn, FLX ON for each filter. Then set FLTX to the appropriate filter
per mode. For CW and SSB set it to the 2.7 (or 2.8 filter), For AM, 6
kHz if available, otherwise the 13kHz, for FM the 13kHz if installed.
K3 Utility should show you the same thing as recorded in the menu.

Make sure the filters are plugged in the K3 RF board from highest to
lowest as indicated on the silkscreen.

Has it been working before? or is this a recent problem? If working
before, what has changed?

73,
Don W3FPR

On 4/27/2016 9:18 PM, Gary Smith wrote:

> There is:
>
> 2.8K is for CW and SSB
> 6K is for AM and the FM is checked by default.
>
> Installed in the main is:
> FL1 6K - {AM}
> FL2 2.8K - {CW & SSB}
> FL3 1K
> FL4 400 Hz
> FL5 200 Hz
>
> Sub:
> FL1 6K
> FL2 2.7K
> FL3 1K
> FL4 500 Hz
> FL5 250 Hz
>
>
> When running through Config I only see FL4 listed, no other filters
> show up as in FL5, FL3, FL2 & FL1
>
> FL4 Config options read:
>
> FL4 BW rF .40
> FL4 FREQ rF 0.00
> FL4 GN rF 0db
> FL4 ON rF yes
> FLTX SB FL2
>
>
> 73,
>

Gary Smith-2

Re: K3s - No transmit - Resolved

In reply to this post by Gary Smith-2

Thank God!

I have been working with two separate K3's without the sub and they
have a jumper that has to be removed from connector J64A on the RF
board before you install the KNB3 SUBIN Board. I remembered seeing
those jumpers on these K3's and also, I had some difficulty removing
the Sub Rx to get at the filters (the coax were binding & making it
tougher to remove) and in the the process of removing the Sub Rx, the
SUBIN board came out, attached to the pins on the Sub Rx deck.

I started thinking of what variables there were & remembered from
building my K3, that that jumper had to be there for transmit. Then
it clicked; I wondered if maybe I hadn't replaced the SUBIN correctly
and if so, maybe that misalignment was the cause of the problem with
now having no transmit.

Removed everything again & got a better light in there and sure
enough, the pins were one off. Re-installed it mo' bettah and
replaced the Sub Rx and now all is as it should be; transmitting with
a smile & hearing a fly hiccup at 20 feet.

Maybe someone else will find this on Nabble someday, looking for old
threads on the subject, while trying to figure out what went wrong
with transmit after replacing filters with a sub Rx board.

Time for a nice IPA...

73 & Thanks Don & Kevin, I appreciate the replies to help me.

Gary
KA1J