Harv,
I think the key is what you said about "long cycles modes like RTTY".
Things heat up in those instances and the current will increase. The
only 'cure' is to reduce power. I would suggest running RTTY at a power
level of 50% of the CW/SSB rating for the transmitter.
73,
Don W3FPR
On 12/19/2018 9:53 AM, Gadget Lust wrote:
Hi Don:
Actually, my issue is only on 10M. It appears that as I transmit,
current consumption increases, and I get occasional high current
messages. This is more apparent on long duty cycle modes like RTTY,
and at higher power levels (80-100W). If I watch, I can see current
consumption start at 16 amps, and slowly rise to 25-27 amps.
I performed a TX gain Cal successfully, and that made it a bit more
stable (only rising to 20 or 21 amps now), but it still concerns me.
A friend suggested this may be blown coils in the output bandpass
filters. I can wrap new coils if needed, but don’t want to do this if
that’s not the problem.
______________________________________________________________
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]
