[RFI] Smoke Detectors Beeping

Jim Brown jim at audiosystemsgroup.com
Sat Jul 28 12:03:04 EDT 2018


On 7/28/2018 6:43 AM, john at kk9a.com wrote:
> It is likely that the majority of the problem is feedline radiation.

While it is likely a PART of the problem, the greatest part of the 
problem is the wiring issues and poor design of the detector.

> I
> would work on that first.  What performance advantage does an OCF have
> over a center fed 1/2 dipole or multiple dipoles in a fan?  The OCF can
> have deep nulls on some bands.

I agree that OCF dipoles are a really bad idea for TODAY.  They were an 
OK solution for LONG AGO, when RFI was much less of an issue.

73, Jim K9YC



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