In article ,
Roy Lewallen wrote:

Either use a TDR, or something that measures RF impedance - an SWR
meter, an impedance bridge, an antenna analyzer, or even a signal
generator and a scope. Sure there's a path for current flow, but only
for sure at RF, so that's where you have to detect it.

Or, modify the antenna very slightly - put an RF choke or a
large-value resistor across its feedpoint. This will give you
something to probe for at DC, without affecting the antenna's
performance at RF.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
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