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Keyer issue. #problem

 

I see a number of topics addressing various issues with the Keyer but after trying all the various solutions I can't seem to solve mine. I have a MFJ-564b that seems to work flawlessly on my Elecraft KX3. If I measure the resistance and continuity of the contacts at the phone jack end, with no pressing of the paddles there is basically infinite resistance. However that being said, about 2 out of 10 times when I power up the QCX it is just stuck in sending steady Dah's. This only clears when I tap either of the paddles several times. Then the second thing that happens is if I hold down the Right Paddle to get a steady stream of Dah's it from time to time inserts a Dit, with no pressing of the Dit paddle.?

? I've tried different cables, made sure I have a dummy load connected and verified I'm in CW test mode. I've gone over the construction and looked for bridged or almost bridged connections and I don't see any. Also have double checked the components and they seem to be correctly positioned. Receive works well and is very sensitive. In transmit I get a solid 5 Watts out when connected to a LiFO battery. I'm starting to come down on the side of demonic possession but before calling an exorcist might anyone have a suggestion as to where to look for this vexing problem??

? 73, Donald L. Gover KC9ZMY??
Dwatson4
 

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A short in your keyer wire/plug?

Dwight C Watson

On Sep 3, 2018, at 10:08 AM, Donald Gover <dlgover@...> wrote:

I see a number of topics addressing various issues with the Keyer but after trying all the various solutions I can't seem to solve mine. I have a MFJ-564b that seems to work flawlessly on my Elecraft KX3. If I measure the resistance and continuity of the contacts at the phone jack end, with no pressing of the paddles there is basically infinite resistance. However that being said, about 2 out of 10 times when I power up the QCX it is just stuck in sending steady Dah's. This only clears when I tap either of the paddles several times. Then the second thing that happens is if I hold down the Right Paddle to get a steady stream of Dah's it from time to time inserts a Dit, with no pressing of the Dit paddle.?

? I've tried different cables, made sure I have a dummy load connected and verified I'm in CW test mode. I've gone over the construction and looked for bridged or almost bridged connections and I don't see any. Also have double checked the components and they seem to be correctly positioned. Receive works well and is very sensitive. In transmit I get a solid 5 Watts out when connected to a LiFO battery. I'm starting to come down on the side of demonic possession but before calling an exorcist might anyone have a suggestion as to where to look for this vexing problem??

? 73, Donald L. Gover KC9ZMY??

Frank Waarsenburg
 

Donald,

You could try 1k pullup resistors from the paddle contacts to the +5V power supply. Maybe there is too much resistance to ground somehow.

73 de Frank PA3CNO


Op 3 sep. 2018 16:08 schreef Donald Gover <dlgover@...>:

I see a number of topics addressing various issues with the Keyer but after trying all the various solutions I can't seem to solve mine. I have a MFJ-564b that seems to work flawlessly on my Elecraft KX3. If I measure the resistance and continuity of the contacts at the phone jack end, with no pressing of the paddles there is basically infinite resistance. However that being said, about 2 out of 10 times when I power up the QCX it is just stuck in sending steady Dah's. This only clears when I tap either of the paddles several times. Then the second thing that happens is if I hold down the Right Paddle to get a steady stream of Dah's it from time to time inserts a Dit, with no pressing of the Dit paddle.?

? I've tried different cables, made sure I have a dummy load connected and verified I'm in CW test mode. I've gone over the construction and looked for bridged or almost bridged connections and I don't see any. Also have double checked the components and they seem to be correctly positioned. Receive works well and is very sensitive. In transmit I get a solid 5 Watts out when connected to a LiFO battery. I'm starting to come down on the side of demonic possession but before calling an exorcist might anyone have a suggestion as to where to look for this vexing problem??

? 73, Donald L. Gover KC9ZMY??

 

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This may sound silly, but are you trying to key the QCX keyer with the signal from your MFJ keyer?.? May I suggest that you connect your existing key and paddles directly to the QCX keyer input and set the MFJ unit aside?

?

73, N0BPA

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Donald Gover
Sent: Monday, September 3, 2018 9:08 AM
To: [email protected]
Subject: [QRPLabs] Keyer issue. #problem

?

I see a number of topics addressing various issues with the Keyer but after trying all the various solutions I can't seem to solve mine. I have a MFJ-564b that seems to work flawlessly on my Elecraft KX3. If I measure the resistance and continuity of the contacts at the phone jack end, with no pressing of the paddles there is basically infinite resistance. However that being said, about 2 out of 10 times when I power up the QCX it is just stuck in sending steady Dah's. This only clears when I tap either of the paddles several times. Then the second thing that happens is if I hold down the Right Paddle to get a steady stream of Dah's it from time to time inserts a Dit, with no pressing of the Dit paddle.?

? I've tried different cables, made sure I have a dummy load connected and verified I'm in CW test mode. I've gone over the construction and looked for bridged or almost bridged connections and I don't see any. Also have double checked the components and they seem to be correctly positioned. Receive works well and is very sensitive. In transmit I get a solid 5 Watts out when connected to a LiFO battery. I'm starting to come down on the side of demonic possession but before calling an exorcist might anyone have a suggestion as to where to look for this vexing problem??

? 73, Donald L. Gover KC9ZMY??

 

Tony:
? ?I'm not using the MFJ keyer, just the Key. In fact if I set the QCX to straight key and use my nanokeyer it works 100% of the time. So I'm kind of stymied.?

? ?73, Donald L. Gover
 

Frank:
? ? now that sounds like an Idea to try. When I get back home on Wednesday I'll be giving that a go.?

? ? 73, Donald L. Gover, KC9ZMY
 

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I did have to readjust all the spark gaps and spring tension when I replaced my HAMKEY keyer with the QCX, but all fine now!? Good luck.

73, Tony N0BPA

?

?

From: [email protected] [mailto:[email protected]] On Behalf Of Donald Gover
Sent: Monday, September 3, 2018 3:28 PM
To: [email protected]
Subject: Re: [QRPLabs] Keyer issue. #problem

?

Frank:
? ? now that sounds like an Idea to try. When I get back home on Wednesday I'll be giving that a go.?

? ? 73, Donald L. Gover, KC9ZMY

 

Hi, I have a similar problem. When I change the keyer configuration to IAMBIC (A/B), it works sometimes fine. Alternating dits and dahs, next time it works well. Also it seems to depending on the training mode. After a frequency change it works - sometimes. It must depending on the moon radiation ;-). Straight key always works fine.

73, ralf, DO1JBL
 

I had problems when I ran it on iambic A, but finds mine works fine on iambic B. Not sure if that helps.

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