tony147
Freebander
Registered: 04-2008
Posts: 211
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1/2 Wave Silver Rod
Hi all, does anyone know the precise length of a 1/2 Wave Silver Rod in mm to give it lowest SWR on 27mhz? The one I have came pre-marked with a thick black line on each section. As 10mm made a difference to my wire does the same apply to the rod??
Not had a chance to set up and test yet.
Cheers TC
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26FB147. Using Yaesu FT 897, Silver Rod and 6 foot Firestik
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28/May/2008, 5:29 pm
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topbuzzuk
Big Cheese
Registered: 11-2007
Location: Wiltshire, UK
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Re: 1/2 Wave Silver Rod
i think moving it an inch at a time would be ok, my vertical has marks on it too. i think the marks are for the mid band as most antennas are designed around there, trial and error, just try moving it each way and se what the swr does 
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26FB118
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28/May/2008, 9:11 pm
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26fb139
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Registered: 01-2008
Location: Dudley west mids
Posts: 1275
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Re: 1/2 Wave Silver Rod
take a swr reading on your highest tx freq & your lowest tx freq.
if higher on top freq shorten antenna,if higher on lowest freq lentgh antenna??
or just get lowest swr on 27.500mhz.
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139 in any GOOD group??
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31/May/2008, 1:17 pm
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