[Antennaware] Terminated Vertical

Andy Ikin andy.ikin at btopenworld.com
Sun Dec 23 06:39:32 EST 2007


Good morning Guys,


It is possible to achieve the same reception pattern of a ground mounted vertical using a 22ft aluminium pole with 2 sloping wires affixed to the top of the pole? Each wire comes out say 15ft from the pole ( 5ft above ground ), then bends back towards the base of the  pole and is connected to a ground rod via a 1k resistor i.e. the antenna looks like a single  K9AY loop with 2 termination resistors. The insulated 22ft aluminium pole and the ground would be connected to a high Z input bipolar buffer amplifier with common mode feeder isolation choke.

This configuration ( if it works) would provide lower noise than a FET active vertical with higher immunity to static damage! Also the amplifier would see a resistance loaded antenna rather than a small capactance of a whip antenna. 

73

Andy  G8LUG


More information about the Antennaware mailing list