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I'm sorry LC, that's wrong. I'm not going to try to explain it, it wouldn't be a short post at all (and I'm not much of a teacher anyway). The thing is designed to be bolted to a mast, and so at least partially 'grounded'. Why not do it as the instructions say?
It looks like you should have enough room in that attic for both a 6 and 11 meter antenna. Several ways of going about that, probably the easiest or most common way would be to string up a fan dipole. Nothing fancy, just string them up as straight as you can. The ends of one dipole as far...
Anyone been following the Harvey and Irma threads in the other forums? Seems to be lots of people (hams) wanting to help without the slightest idea of how to go about it properly. "I'll just load up and go down there and set up!", that sort of thing. No idea of what's required, what's wanted...
I've never seen these antennas before, but in general, I don't think there's anything particularly 'better' about them. Typical radiation pattern, which depends to a great extent on how/where the thing is mounted. If you wanna try one, do it.
That RG-6 is pretty good stuff. It isn't going to be a 'perfect' match, but no coax ever is. If you're observant, watch the cable TV guys and you can get miles of it!
I think reading the bill that reached the senate would be a very good idea! It is not the same as the bill that passed the house. Getting stalled in committee was very good.
I figure you already know it, but if you use those 10 foot sections over 30 feet, you will definitely have to guy the last two sections. That's if I'm understanding you correctly. If it's a mast and you've only got 8"s or so of 'overlap' you are really pushing it. Depends on the wind of...
"If the ground plane is to small, you can compensate by making the antenna longer, and vice versa. What are the odds that the vehicle chassis is going to present the exact size needed for a groundplane..."
The first part, compensating for a 'too small groundplane' is not true. It doesn't work...
A typical ball mount is about 4" tall, plus that 6" spring and an 8.5' whip and you have 9.2', or close to it. A 1/4 wave on 27.200Mhz id around 8.6' long. The resulting antenna is too long by almost a foot. Right? So if you tune that thing then I would have to agree that it's a pretty...
"4:1 pep to carrier equals 100%." Oh boy, now we get to deal with measuring units (Avg/Pep). That's always fun, especially if someone isn't familiar with those measuring units. Get the basic idea understood then worry/discuss how things are measured and the changes in ratios etc.
And that's...
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