[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
**************Nothing says I love you like flowers! Find a florist near you 
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