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Radio => Antennas => Topic started by: spacecase0 on September 27, 2014, 10:04:38 PM

Title: disc cone
Post by: spacecase0 on September 27, 2014, 10:04:38 PM
so I have been playing with disc cone antennas for a while,
and they here things they should not be able to,
kind of like the caduceus coil antennas I have played with,

I know they are a less than one gain antennas,
but they out preform a 1/4 wave whip by a long shot in marginal areas,

seems to me that something is going on with them that is usually is discounted quite fast by people that have not tried them,
does anyone here have thoughts on them ?

Title: Re: disc cone
Post by: AD on September 27, 2014, 11:26:03 PM
I have a MIL version but never hook it up yet nor have I tried to use it.  Need to make time to do that.
Title: Re: disc cone
Post by: BTPost on September 28, 2014, 12:13:47 PM
A properly designed and constructed disc cone antenna, will usually out-preform a standard 1/4 wave antenna, because, usually the RF Ground on the 1/4wave isn't really much of an RF Ground. The Disc cone will provide WideBand impedence matching across a wide Frequency Range.  They were originally designed for Vhf/Uhf/Shf Receiving, but they can be designed and constructed for HF, if one has enough area, and height, to allow for proper element Lengths.
Title: Re: disc cone
Post by: spacecase0 on September 29, 2014, 09:32:25 PM
thank you,
good to know what is up with them,
I just liked them for the flat SWR,
had no idea it would work so well.