Rune,
It is most likely a bad connection. If the KAF2 or KDSP2 is installed,
reseat those options to wipe away any oxidation on the pins.
When the loss of AF appears, do you still have sidetone (use the SPOT
button in CW mode)? If so, the AF amp is OK - follow the path from the
IF amplifier output on the schematic and reflow the soldering on all
components in that path.
73,
Don W3FPR
On 2/9/2021 8:19 AM, Rune Edberg via Elecraft wrote:
Using a second-hand Elecraft K2, QRP rig. No. 5810. Works like a charm since
several years. However, sometimes the AF speaker / phones sound disappears for
any apparent reason. S-meter still moving! Have to reboot the K2 with the
on/off switch, sometimes more than once, to get the AF running again. This
became a big nuisance after starting operating FT8 as the computer connection
goes down and I then also have to reboot the computer. AF is routed to the
computer via a constant-level output (put in by the original K2 owner) and thus
also subject to the same error.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
