Quote:
Originally Posted by Richard Ferryman
I have come by a Tonna 9 element yagi for 430MHz to 440MHz. The driven
element is a folded dipole and has an n-type connector attached. SWR looks
correct and it works but there is a slight skew to the radiation pattern.
The n-type connector is potted in a plastic or epoxy and looks too small to
have any sort of balanced to unbalanced device in it. I intend putting a
ferrite choke on the feed cable to help. Tonna antennas have a good
reputation and I am surprised at the apparent feed method. Does anyone know
if I have missed something?
Dick G4BBH
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First you cannot check antenna resonance with a SWR meter, that only tells the story of the feed line.
You need a dip meter or a antenna analyzer.
Second - you can use a loop, or a 1:1 Balun inline or beads..
My question is - what frequency do you want it for and what do you want to do with it =- transmit or receive?
430 - 440 is not within the parameters of amateur radio for repeaters....
You could talk simplex or work slow scan television and CW / Digital modes and that is about it.