>I've read a lot on this subject but I'm still at odds as to what to use in
>the SB-220 What's the best replacement for RFC2? Should it be 10 ohms 10W,
>2 10 ohms 10W in series or a 20 ohms 20 watts.
? The critical thing with a glitch resistor is that it does not break
down internally during a glitch. Well made 10-ohm, 10w ww
glass-coated/vitreous-enamel resistors can dissipate the peak energy from
a glitch up to about 3kV uning typical ham-amp. C filters. . The
critical thing is peak v-gradient, which is mostly determined by the
length of the nichrome winding. Above c. 3kV, two such resistors in
series is advisable.
>All I can get in this neck of the woods is a Brown Devil 20 ohms 25W.
>Rather big. Is this acceptable?
? Yes, however, the length of the winding on a Brown Devil 25W unit is
about the same as a10w unit. // We currently use a Huntington Electric,
Inc. 10 ohm 12w unit in our suppressor retrofit kits. A special Cesiwid
glitch R would be even better, however the price is about 10 db higher.
- cheers, Walter.
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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