[TowerTalk] Hygain 402ba

[Ron W8RJL]

Andy,
You would never use a relay at the element tip. The element can be 
lengthened by adding inductance or shortened by adding capacitance in series 
but that would be done at the feed point or the center of the element. The 
hair pin is used for converting the antenna Z to match the 50 ohm line plus 
it provides a static drain for the driven element. I have seen articles on 
doing what you are wanting to do but don't remember where. Maybe ARRL 
Antenna Handbooks or W6SAI Antenna Book. Do some research, there is info out 
there you just need to find it. BTW, you don't have to use a coil or cap, 
just adding a little wire in the form of linear loading will do the trick. 
Good luck & 73. Ron W8RJL

----- Original Message ----- 
From: "andy ronan" <1n9tgr at sbcglobal.net>
To: <towertalk at contesting.com>
Sent: Wednesday, June 18, 2014 10:32 PM
Subject: [TowerTalk] Hygain 402ba


Hi to all, looking for a little guidance with a 402ba 2el 40 mtr yagi. As 
most people know it suffers from narrow bandwidth which can be a pain if you 
want to cover cw/ssb segments of the band. I having been thinking of 
modifying it for such by using relays on the driven and reflector elements 
for full band coverage.It uses a hairpin match and was wondering if this 
might be the best place for the relays rather than on the element tips. Any 
thoughts or ideas on the best approach.


Andy N9TGR
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