[Elecraft] K2/100 Power Fluctuates Cyclically on 40, 30 Meters; K2 s/n 06660
TRBOAG at aol.com
TRBOAG at aol.com
Sun Feb 8 15:11:53 EST 2009
Just finished K2/100 assembly and verified power output on all bands.
I notice at about 15 watts output a cyclic (1-2/second) fluctuation in power
from 13 to 16 watts as shown on Elecraft display (in Tune Mode). CW Mode,
XFIL1. Driving MFJ-949E as Dummy Load Mode and see same fluctuation in forward
power meter there. SWR is consistent 1.0:1. Power from Alinco DM-340MV. K2
contains SSB and NB modules. Fan runs slow some of time during tests but, after
shutting off K2 and power supply, felt for warm components and found nothing
- Heatsink only mildly warm.
Wondering what could account for that cyclic fluctuation and also how power
output regulation works... software? sampling 1-2/second???
Regards, Tom
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