On 8/2/2014 9:12 AM, Jim Lux wrote:
Here's a question.. is the 2:1 really going to double it. the
dielectric loss is voltage related and the copper loss is current
related. With a mismatch, the ratio between current and voltage changes
from the matched case, so at a place the voltage is high, the current is
low, etc.
your typical line (or wire in point to point wiring) is << wavelength at
HF, so maybe it could be worse or better, depending on whether you are
lucky?
For 2:1 VSWR, 2X is the worst case, which you would want to use for
design. In practice, it could vary from half to twice the matched
value for a short section of line.
The question you need to ask yourself is:
"Am I feeling lucky today?"
Rick N6RK
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