[TowerTalk] Testing for unbalanced parallel feedline

Mark . n1lo at hotmail.com
Tue Jun 28 12:37:50 EDT 2005


Hello All,
I've been following the thread about improving the dipole with interest. I 
frequently recommend common 300 ohm TV twinlead as a feedline, transitioning 
to shielded parallel line before entering the shack. This requires a pair of 
coaxes, any impedance, and saves the cost of a remote balun (see ARRL 
antenna book).

Is there a simple way to test if a parallel feedline is unbalanced by 
measuring leakage/radiation? Would a simple field strength meter make a good 
probe for this?

--...MARK_N1LO...--




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