Topband: FCP vs Gull Wing Elevated Radials

Mark K3MSB mark.k3msb at gmail.com
Thu Jul 25 13:04:33 EDT 2019


This kind of goes with the other thread that has morphed into the FCP
topic, but is a bit different.

With an FCP feeding the INV-L,  the bottom of the INV-L will be at least 10
feet off the ground.    With my existing trees I can barely get up 50 feet
from the ground.   So, the INV-L will have 40 feet of vertical radiator.

Using a pair of resonant gull winged radials feeding the INV-L at the
base,  the vertical part will be 50 feet.

>From what I’ve read,  the FCP is a better solution over a pair of resonant
gull wing radials,   but I’ve also read that vertical length of an INV-L is
important.   So there’s a tradeoff to be considered.

Comments?

Due to real estate considerations,  I can put up only 2 one-half wavelength
resonant radials

Mark K3MSB


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