[TowerTalk] Circuit Board Question
Richard (Rick) Karlquist
richard at karlquist.com
Sat Aug 2 14:00:19 EDT 2014
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
More information about the TowerTalk
mailing list