RadioBanter - View Single Post - DOUBLE RESONANCE IN DIPOLE...THE CAUSE?????

November 12th 04, 04:50 AM

(Tom Bruhns) wrote in message om...
(Dr. Slick) wrote in message . com...

Granted, i'll give you the harmonics, but a double-dip
at for example, 88.1 and 93.7 MHz would indicate a BIG
problem!

So are you measuring _just_ the dipole, or the dipole through a
feedline?

Through about 20 feet of RG-58.

Do you have any idea at all how many coupled resonators you
are measuring? See, e.g., King, Mimno and Wing, to educate yourself
about antenna systems seen as a set of coupled resonators. Disabuse
yourself of the notion that you actually understand what your
measurements mean at this point.

I understand it quite well... two non-harmonically
related resonances in a very narrow band (88-108 Mhz) is
a bad sign if you didn't design you antenna for broadband.

S.