Topband: Antenna analysers in close proximity to BC station.

ZR zr at jeremy.mv.com
Fri Nov 2 20:11:32 EDT 2012


MFJ sells a filter for that but I dont know how well it works around serious 
BCB RF; 10KW at the high end of the band in 2 directions in about 7-8 miles 
doesnt bother my unfiltered 259B nor do the FM and UHF TV sites about 2 
miles away.

Carl
KM1H




----- Original Message ----- 
From: "Chris G3SVL" <Chris at G3SVL.com>
To: "Tom Boucher" <tom at telemetry.demon.co.uk>; "160 reflector" 
<topband at contesting.com>
Sent: Friday, November 02, 2012 6:42 PM
Subject: Re: Topband: Antenna analysers in close proximity to BC station.


> At 21:21 02/11/2012, Tom Boucher wrote:
>>...... but how to use the antenna analyser in the presence of a high BC 
>>station field. Anyone any ideas?
>
> Hi Tom,
>
> I have 2.4KW of MW BC transmitter 300m from the base of my 160m antenna, 
> so I know the problem.  I've found an ICE BC filter to be pretty good - 
> but I've only ever used it to tweak a matching system, not to take 
> absolute readings.
>
> I've used a loaned N8LP LP100A and that worked fine - but of course that's 
> an entirely different measurement system.
>
> 73 Chris, G3SVL
> _______________________________________________
> Topband reflector - topband at contesting.com
>
>
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