Discussion:
K2/100 & 6 meter - CW is not giving any output
(too old to reply)
PA2R via Muurkrant
2005-08-14 17:55:48 UTC
Permalink
Hello all, maybe someone can help me solving the following issue:



I have a K2/100 with a 6 meter transverter. I tried to use it last night in
CW and noticed than on CW the K2 PTT relais is switching and the keyer is
making the dots and dashes but I see no power output. None of the leds is
going on. In SSB is shows 20 watts.



A friend of me who has the same setup is experiencing the same.



Is there something special which needs to be done to enable CW on 6 meter?



Any help is appreciated.



73 Rob PA2R
W3FPR - Don Wilhelm
2005-08-14 19:10:23 UTC
Permalink
Rob,

Please clarify - there is no PTT relay in the K2/100, all transmit/receive
switching is electronic, so there is no relay clicking involved. Is the
relay clicking from the K2/100 or from the transverter?

Do you have power output from the KPA100 without the 6 meter transverter
connected? Have you configured the 6 meter transverter correctly? How are
you driving the transverter (from the K60XV output jacks of from the high
power output from the K2/100)? In other words, give us the complete setup
information so we can help - all these things do make a difference.

73,
Don W3FPR
-----Original Message-----
I have a K2/100 with a 6 meter transverter. I tried to use it
last night in
CW and noticed than on CW the K2 PTT relais is switching and the keyer is
making the dots and dashes but I see no power output. None of the leds is
going on. In SSB is shows 20 watts.
A friend of me who has the same setup is experiencing the same.
Is there something special which needs to be done to enable CW on 6 meter?
Any help is appreciated.
73 Rob PA2R
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Rob Snieder
2005-08-16 17:26:22 UTC
Permalink
Hi Don, thanks for responding,

Short coax cable between K2 Ant > Txin IF1
Antenna is connected to transverter Ant plug.

Control cable is connected between K2 and transverter

SSB on 6 meter works fine so cables are ok. Keyer is working fine on HF
bands.

Relay is clicking in the transverter when PTT is make by keying my bencher
which is connected to the K2 keyer input jack.

Hope this is more clear now Don.

-----Original Message-----
From: W3FPR - Don Wilhelm [mailto:***@earthlink.net]
Sent: 14 August 2005 20:09
To: PA2R via Muurkrant; ***@mailman.qth.net
Subject: RE: [Elecraft] K2/100 & 6 meter - CW is not giving any output

Rob,

Please clarify - there is no PTT relay in the K2/100, all transmit/receive
switching is electronic, so there is no relay clicking involved. Is the
relay clicking from the K2/100 or from the transverter?

Do you have power output from the KPA100 without the 6 meter transverter
connected? Have you configured the 6 meter transverter correctly? How are
you driving the transverter (from the K60XV output jacks of from the high
power output from the K2/100)? In other words, give us the complete setup
information so we can help - all these things do make a difference.

73,
Don W3FPR
-----Original Message-----
I have a K2/100 with a 6 meter transverter. I tried to use it
last night in
CW and noticed than on CW the K2 PTT relais is switching and the keyer is
making the dots and dashes but I see no power output. None of the leds is
going on. In SSB is shows 20 watts.
A friend of me who has the same setup is experiencing the same.
Is there something special which needs to be done to enable CW on 6 meter?
Any help is appreciated.
73 Rob PA2R
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Gregg R. Lengling
2005-08-16 17:32:08 UTC
Permalink
I know this is a stupid question...but sometimes the easiest things can go
wrong.

Do you have the rig in CW mode or did you forget and you're still in SSB
mode??? You'll hear relays click in the K2 but there will be no power out
because you're keying the rig in SSB mode with no audio.

Like I said simple and stupid, but easy to happen.

Gregg R. Lengling, W9DHI, Un-Retired
K2/100 SN 3075
http://www.milwaukeehdtv.org
PA2R via Muurkrant
2005-08-16 17:48:04 UTC
Permalink
Hello Gregg,

in my original e-mail is explained I was using the internal keyer so yes it
was in the cw mode otherwise the keyer doesn't work.

Original case:

I have a K2/100 with a 6 meter transverter. I tried to use it last night in
CW and noticed than on CW the K2 PTT relais is switching and the keyer is
making the dots and dashes but I see no power output. None of the leds is
going on. In SSB is shows 20 watts.

-----Original Message-----
From: Gregg R. Lengling [mailto:***@wi.rr.com]
Sent: 16 August 2005 18:30
To: Rob Snieder; ***@mailman.qth.net
Subject: Re: [Elecraft] K2/100 & 6 meter - CW is not giving any output

I know this is a stupid question...but sometimes the easiest things can go
wrong.

Do you have the rig in CW mode or did you forget and you're still in SSB
mode??? You'll hear relays click in the K2 but there will be no power out
because you're keying the rig in SSB mode with no audio.

Like I said simple and stupid, but easy to happen.

Gregg R. Lengling, W9DHI, Un-Retired
K2/100 SN 3075
http://www.milwaukeehdtv.org
W3FPR - Don Wilhelm
2005-08-16 19:25:57 UTC
Permalink
Rob,

Assuming you have all the K2 trn 1 menu parameters set correctly and the
transverter properly configured (and you likely have them correct or the
transverter would not work in SSB mode), you have a mystery for me. The
Transverter does not know (and should not know) whether the RF is being
produced as CW or SSB. All I can conclude is that the K2 is producing no RF
at 28 MHz when in CW mode. The fact that no indicators are illuminated adds
to my suspicion that there is no RF present.

Since you have RF in CW mode on all the HF bands, I would recommend that you
disconnect the coax to the transverter and connect it to a dummy load - then
see if there is RF output from the K2 when the band is set for 50 MHz and in
CW mode. You can use a 'scope or RF Probe across the dummy load to detect
the RF.

I can see nothing in the setup that would prevent CW output when SSB output
works OK - the only thing I can think of is that somehow you are getting the
K2 into CW Test mode (is the 'c' on the K2 display blinking?) - I'm guessing
here because the CW test mode does not change when you change bands, and it
is reset after a power off cycle.

You might try setting the K2 menu INP parameter to 'Hand' temporarily to see
if it works when the K2 is keyed from a long keypress - if it does, you
should be looking carefully at the keying characteristics of your K2 -
perhaps the weight menu setting or the 8R delay parameter, but that is only
another quick guess on my part.

73,
Don W3FPR
-----Original Message-----
Hi Don, thanks for responding,
Short coax cable between K2 Ant > Txin IF1
Antenna is connected to transverter Ant plug.
Control cable is connected between K2 and transverter
SSB on 6 meter works fine so cables are ok. Keyer is working fine on HF
bands.
Relay is clicking in the transverter when PTT is make by keying my bencher
which is connected to the K2 keyer input jack.
Hope this is more clear now Don.
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PA2R via Muurkrant
2005-08-16 21:50:53 UTC
Permalink
TRN1 option is set to On and I can see when setting TRN1 to off the 6 meter
transverter switches off and 6 meter is not a selectable band anymore.

Tried 10 meter CW and gives 100 watt output, no problem.

CW is not in test mode but in oper mode

Tried CW keyer in hand mode and dash side of keyer produces a cw tone,
release is switched on but no power, switching to SSB and it give 15 or 20
watts output. The tuner indication switches from hi to low when selecting
the 6 meter transverter, although the connection cable is going to the tuner
the antenna goes directly from K2 to Transverter and from transverter to
antenna.

Unfortunately I haven't got a dummy load but can say for 99.9% I am sure no
power goes out.

Hope some others have bright ideas or can confirm their 6 meter transverter
IS working on CW. At least I than know it can work.

73 Rob PA2R

-----Original Message-----
From: elecraft-***@mailman.qth.net
[mailto:elecraft-***@mailman.qth.net] On Behalf Of W3FPR - Don Wilhelm
Sent: 16 August 2005 20:24
To: Rob Snieder; ***@mailman.qth.net
Subject: RE: [Elecraft] K2/100 & 6 meter - CW is not giving any output

Rob,

Assuming you have all the K2 trn 1 menu parameters set correctly and the
transverter properly configured (and you likely have them correct or the
transverter would not work in SSB mode), you have a mystery for me. The
Transverter does not know (and should not know) whether the RF is being
produced as CW or SSB. All I can conclude is that the K2 is producing no RF
at 28 MHz when in CW mode. The fact that no indicators are illuminated adds
to my suspicion that there is no RF present.

Since you have RF in CW mode on all the HF bands, I would recommend that you
disconnect the coax to the transverter and connect it to a dummy load - then
see if there is RF output from the K2 when the band is set for 50 MHz and in
CW mode. You can use a 'scope or RF Probe across the dummy load to detect
the RF.

I can see nothing in the setup that would prevent CW output when SSB output
works OK - the only thing I can think of is that somehow you are getting the
K2 into CW Test mode (is the 'c' on the K2 display blinking?) - I'm guessing
here because the CW test mode does not change when you change bands, and it
is reset after a power off cycle.

You might try setting the K2 menu INP parameter to 'Hand' temporarily to see
if it works when the K2 is keyed from a long keypress - if it does, you
should be looking carefully at the keying characteristics of your K2 -
perhaps the weight menu setting or the 8R delay parameter, but that is only
another quick guess on my part.

73,
Don W3FPR
-----Original Message-----
Hi Don, thanks for responding,
Short coax cable between K2 Ant > Txin IF1
Antenna is connected to transverter Ant plug.
Control cable is connected between K2 and transverter
SSB on 6 meter works fine so cables are ok. Keyer is working fine on HF
bands.
Relay is clicking in the transverter when PTT is make by keying my bencher
which is connected to the K2 keyer input jack.
Hope this is more clear now Don.
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Matt Osborn
2005-08-17 00:59:26 UTC
Permalink
Rob,

I have a K2 (no KPA100) with KIO2, K60XV and XV50 and CW works fine on
6 meters. My 28Mhz band feeds 1 milliwatt through the K60XV to the
transverter; the PTT feeds through the KIO2, same as your setup.

Your jumpers should be set to include the attenuator (JP3 2&3, JP4
2&3) and to exclude the amplifier Q6 (JP5 1&2, JP6 1&2). As Don
pointed out, none of those have much to do with CW though.

You should be able to use the RF probe that came with the K2 to check
for RF in the transverter at R22 (connects to JP5) and again at L9
(connects to D10).

If you're not sure of what level you're reading, vary the K2 power
knob while probing. Your reading should follow the power knob setting.
The CW will undoubtedly vary on its own, but you should see the upper
limit vary.



On Tue, 16 Aug 2005 22:51:23 +0200, PA2R via Muurkrant
Post by PA2R via Muurkrant
TRN1 option is set to On and I can see when setting TRN1 to off the 6 meter
transverter switches off and 6 meter is not a selectable band anymore.
Tried 10 meter CW and gives 100 watt output, no problem.
CW is not in test mode but in oper mode
Tried CW keyer in hand mode and dash side of keyer produces a cw tone,
release is switched on but no power, switching to SSB and it give 15 or 20
watts output. The tuner indication switches from hi to low when selecting
the 6 meter transverter, although the connection cable is going to the tuner
the antenna goes directly from K2 to Transverter and from transverter to
antenna.
Unfortunately I haven't got a dummy load but can say for 99.9% I am sure no
power goes out.
Hope some others have bright ideas or can confirm their 6 meter transverter
IS working on CW. At least I than know it can work.
73 Rob PA2R
-----Original Message-----
Sent: 16 August 2005 20:24
Subject: RE: [Elecraft] K2/100 & 6 meter - CW is not giving any output
Rob,
Assuming you have all the K2 trn 1 menu parameters set correctly and the
transverter properly configured (and you likely have them correct or the
transverter would not work in SSB mode), you have a mystery for me. The
Transverter does not know (and should not know) whether the RF is being
produced as CW or SSB. All I can conclude is that the K2 is producing no RF
at 28 MHz when in CW mode. The fact that no indicators are illuminated adds
to my suspicion that there is no RF present.
Since you have RF in CW mode on all the HF bands, I would recommend that you
disconnect the coax to the transverter and connect it to a dummy load - then
see if there is RF output from the K2 when the band is set for 50 MHz and in
CW mode. You can use a 'scope or RF Probe across the dummy load to detect
the RF.
I can see nothing in the setup that would prevent CW output when SSB output
works OK - the only thing I can think of is that somehow you are getting the
K2 into CW Test mode (is the 'c' on the K2 display blinking?) - I'm guessing
here because the CW test mode does not change when you change bands, and it
is reset after a power off cycle.
You might try setting the K2 menu INP parameter to 'Hand' temporarily to see
if it works when the K2 is keyed from a long keypress - if it does, you
should be looking carefully at the keying characteristics of your K2 -
perhaps the weight menu setting or the 8R delay parameter, but that is only
another quick guess on my part.
73,
Don W3FPR
-----Original Message-----
Hi Don, thanks for responding,
Short coax cable between K2 Ant > Txin IF1
Antenna is connected to transverter Ant plug.
Control cable is connected between K2 and transverter
SSB on 6 meter works fine so cables are ok. Keyer is working fine on HF
bands.
Relay is clicking in the transverter when PTT is make by keying my bencher
which is connected to the K2 keyer input jack.
Hope this is more clear now Don.
W3FPR - Don Wilhelm
2005-08-17 01:35:36 UTC
Permalink
Rob,

Just as another wild guess - I need to ask if the IF frequency you are
attempting to transmit on is lower than 28 MHz? (i.e. are you attempting to
transmit CW below 50 MHz?) If so, that would place the signal outside the
ham band and the K2 may have no output at that frequency (the firmware
controls that feature). Try using CW at the same frequency that you are
successfully transmitting SSB.

73,
Don W3FPR
-----Original Message-----
TRN1 option is set to On and I can see when setting TRN1 to off
the 6 meter
transverter switches off and 6 meter is not a selectable band anymore.
Tried 10 meter CW and gives 100 watt output, no problem.
CW is not in test mode but in oper mode
Tried CW keyer in hand mode and dash side of keyer produces a cw tone,
release is switched on but no power, switching to SSB and it give 15 or 20
watts output. The tuner indication switches from hi to low when selecting
the 6 meter transverter, although the connection cable is going
to the tuner
the antenna goes directly from K2 to Transverter and from transverter to
antenna.
Unfortunately I haven't got a dummy load but can say for 99.9% I
am sure no
power goes out.
Hope some others have bright ideas or can confirm their 6 meter
transverter
IS working on CW. At least I than know it can work.
73 Rob PA2R
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