[Elecraft] K3/KPA500 with a MFJ-994B AUTO TUNER
KEN SIROIS
divemaster5 at bellsouth.net
Sun Oct 23 12:21:26 EDT 2011
de KF1C
Running K3 w/ ALS-600 Mfj-994B in a plastic box at base of 43ft vertical / and
99 ft inverted L.
Fed against 2 above ground radials 135 ft long and 2 65 ft long. (also 5 or 6 60
ft buried)
Inside the shack 100 ft of coax make not much differance on these readings, I
spent allot of time back and forth.
I have line isolators in line (both coax and ferrite ) so I know its not rf on
the shield causing the trips.
994B loses lock and trips the amp above the following readings.
The 994B does not have a wide matching range like the 998 if you read the specs.
I am waiting for the KAT-500 to come out.
43 ft vertical
994B handles 500 watts 10m 12m 15m 17m 20m
994B handles 200 watts 30m and 40m
994B handles 50 watts on 80m
Inverted L 99 ft
994B handles 500 watts 10m 12m 15m 17m 20m 40m
994B handles 75 watts 80m and 160m
Both Inverted L and 43ft vertical connected.
994B handles 500 watts 10m 12m 15m 17m 20m 40m
994B handles 200 watts 80m and 160m
I'm going to extend the L to quarter wave on 160m soon, that should (hopefully)
allow full power on 80m
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