Dear Elecrafters,
I do appreciate the help from Elecraft support, senior supporter Gary and Wayne himself. After quite a few mails back and forth Wayne did the mail with
"Have you tried setting the K3’s transmit ALC off? If there really is per-mode behavior, this should help.
First do a TUNE to establish ALC control level, then set CONFIG:TX ALC to OFF. Exit the menu. Now power control is open-loop; you can still adjust the PWR control, but it is only adjusting drive, without using ALC."
Vy 73 de OZ1CCM, Kjeld
-----Original Message-----
From: Kjeld Holm [mailto:
[hidden email]]
Sent: 25. februar 2018 17:14
To: '
[hidden email]'
Cc: 'Wayne Burdick'
Subject: K144XV on digital modes - disappearing power
Dear Elecrafters,
For a year or so I have had an internal K144XV transverter for 144 MHz in my K3. I have not been using it very much – just a few FM QSOs. I have not seen any problems.
Now I have just started using K144XV on digital modes – especially FT8 (42% TX and 58% RX).
I started out selecting 10W output. After 4 minutes the output suddenly felt to a few mill watt.
Starting out with 5W or even 2W produced exactly the same result.
But without regard to the starting point I could get normal output again just by changing the output a little bit. It did not matter whether I increased or decreased my power a bit.
I did not hear any fans starting up and I could not feel any heating at any sides of the K3.
Can anyone explain what is going on – what I am doing wrong – what I can do to keep the output stable?
Vy 73 de OZ1CCM, Kjeld
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