A 160M dipole or doublet, depending on the feed system and antenna tuner may often serve as a complete 160-10M antenna. The Pro-Am 160M mobile vertical is, of course, designed specifically for 160M -
Yes. The load and antenna impedance are such that the coil reactance goes up while the antenna reactance goes down in frequency. What you end up with is that the loading structures act more or less
Every loading coil has a self-resonant frequency somewhere above the frequency it is used on for mobile operation. It occurs at the frequency where the distributed capacitive reactance is equal to t
So that it would look like a series capacitor above the self resonant frequency, right? On a high enough frequency, the series X from the C might be pretty small... Before leaping to "usually" and "e
Yep, at some frequency, the EM waves won't know that the coil even exists. :-) -- 73, Cecil, w5dxp.com _________________________________________________________________ Mortgage rates as low as 4.62
Well, a loaded mobile antenna usually has only one coil. With a trapped antenna, the trap closest to the feedpoint is the highest frequency trap. So self-resonance in a trapped antenna is turned int
Could one shift the resonance for use on other bands using a source of switched inductance at the base or perhaps switched or variable capacitance? Makes for a fun exploration of possibilities and a
From: kd4e <kd4e@verizon.net> Could one shift the resonance for use on other bands using a source of switched inductance at the base or perhaps switched or variable capacitance? Before there were scr