Hot Fusion
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Registered: 03-2008
Location: South West England
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Vertical for 6.6?
Just interested to hear if any of you have built a (portable) vertical 1/4 wave 6.6MHz antenna?
If so, how did it perform and what did you use for a ground/counterpoise?
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23/Dec/2008, 11:48 pm
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topbuzzuk
Big Cheese
Registered: 11-2007
Location: Wiltshire, UK
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Re: Vertical for 6.6?
ive got a hustler 40m mobile antenna, fits on a h frame magmount i got, not used it yet though but will be very soon. hopin it tunes for 6.6 
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26FB118
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24/Dec/2008, 12:46 am
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Hot Fusion
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Re: Vertical for 6.6?
I'm sure it will, although I expect the tuning will be very narrow band.
I'm looking at constructing a dedicated 45 metre antenna, but I've decided it no longer has to be portable - I'm going to install it here instrad.
I'm just wondering if anyone here has done this (perhaps for 40m?) and has any physical length vs loading coil data available to reduce the amount of guesswork on my part - I'm looking at a physical antenna length of about6 metres.
If not, no problem, I'll experiment and post the data here somewhere.
Now I just need to decide how and when I'm going to sneak into the neighbour's garden to sink some radials under their turf! A spade to create a slit, push the bare wire in, and close the gap, eh?? What they don't know about won't hurt them. On the other hand, I could just ask I suppose...
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25/Dec/2008, 9:30 pm
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Hot Fusion
Management
Registered: 03-2008
Location: South West England
Posts: 1389
Karma: 7 (+7/-0)
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Re: Vertical for 6.6?
I'll just append to this post as I've discovered a nice little DOS program with which to calculate the characteristics of a loading coil - as far as I know it runs under all versions of Windows.
I can't for the life of me remember where I downloaded it from and can no longer find the source, but I understand that credit for it goes to a certain G4FGQ.
For now I'll supply a link to the program:
http://myweb.tiscali.co.uk/andyspatch/40m/vertload.zip
Enjoy, all you antenna builders! 
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Andy - 26FB107
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3/Jan/2009, 9:26 pm
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