[TowerTalk] OCFD: Should I be able to do better?

Jim Brown jim at audiosystemsgroup.com
Thu May 27 14:21:46 EDT 2021


On 5/27/2021 10:55 AM, John Kemker wrote:
> Since when are properly designed OCFD antennae not resonant?  

Most of them.

I've used
> OCFD on multiple bands for years and not noticed any more noise than on
> similar single-band dipoles. 

Did those resonant dipoles have effective chokes at their feedpoint?

  Admittedly, I haven't measured the noise
> figures of those antennae, but your statements don't make sense compared to
> my experiences with OCFD.

I suggest that you study k9yc.com/RFI-Ham.pdf  Most hams have no idea 
how noisy their antennas are. And to tell the difference, we must have 
both antennas rigged, with effective chokes on the resonant antennas, 
and switch between them when listening to a weak station.






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