Testing VHF antenna with ohm meter
"Vinny" wrote in message
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Hello,
I suspect that my VHF antenna is shot, I think it's open circuit.
I'm looking for a quick and easy way to verify it with an ohm meter.
I know that the 50 ohm impedance is an AC impedance
at RF frequencies. But I'm guessing a DC ohm meter should
measure something between a few 10s of ohms to a few hundreds
of ohms if the antenna was good.
I'm measuring ~ 10 meg ohms.
Time for a new antenna?
Depending on the design, the VHF antennas that I'm familiar with will
read either "open" or "shorted" with an Ohmmeter. 10 megohms is a strange
reading for an antenna. Almost sounds like one that is supposed to read
"open" but has a little (or a lot) of water/corrosion someplace where it
doesn't do any good at all.
Old Chief Lynn, W7LTQ
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