[amsat-bb] Re: L/S helix feed

Grant Hodgson grant at ghengineering.co.uk
Mon Oct 23 23:44:44 PDT 2006

Charlie G3WDG has designed a dual, concentric helix feed and microstrip 
filters to reduce the de-sens to very low levels;  details are on his 
website :-



Grant  G8UBN

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