On Feb 1, 2007, at 2:24 PM, Bob Alexander wrote:
> RG316 is a .1" diameter cable with an unlikely 1250 Watt average power
> rating at 10 MHz.
> Has anyone used short lengths of this cable to make choke baluns
> for low
> band use?
> My searches have yielded no info.
The reason that RG-316 has a power rating that appears to be a bit
high is that it has a teflon center conductor, which can take high
temperatures. It will probably get extremely hot at 1250 watts,
which is probably not what you want for a choke balun, as the ferrite
characteristics could be adversely affected. It would probably work
fine for power levels up to at most a few hundred watts. For higher
power, RG-142 or RG-400 (similar, but 142 has a solid copperweld
center conductor while 400 has a stranded conductor) would be a
better choice, while still physically small (0.195 O.D.)
73 - Bob, N7XY
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