On 7/14/2012 1:19 PM, donovanf@starpower.net wrote:
> I'm liking my current forcing, 1/4 wavelength and 3/4 wavelength coaxial
> baluns more and more!
>
> 73
> Frank
> W3LPL
>
>
On low bands, the Q of resonant stubs is fairly low.
Therefore, the effective common mode impedance of these
baluns will not be extremely high. If you want a
single band choke, you could get a higher impedance
more easily by using a low loss ferrite like 61 or 67
to make a conventional common mode choke and then
resonate the choke with a shunt capacitor. It also
requires a heck of a lot less coax than a wavelength.
Rick N6RK
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