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A "quarter wave length" doesn't tell us much since this is a multiband antenna apparently. Quarter wave on which band?

__________________
If you're like everybody else,
you're about average.
73 de K7KBN
CWO4 USNR RET.

Ok its sold as a multiband antenna I find myself mostly on 75-80 meters but I do skip around a bit from time to time. I am looking for ideas or advice on whats my best bet to run as an antenna double bazooka, flat topped dipole etc.

As far as my G5RV the apex is at maybe 35-40 foot the ends are about 6 foot or so off the ground I know they need to all go higher but before getting help here to get this done because I obviously am not in the health to be doing this myself I want to look at other possible options as far as a multiband basically what as far as a multiband is better than a G5RV and as far as my G5RV what height should I run this apex and ends if I were to leave this up?

Right now the apex would be poited west.

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""""was not thinking of a cber sat with his makita screwdriver winding round the presets untill his meter said s9+60db from a guy on a handheld 15 miles away""""

Center fed doublet as long and as high as practical. Balanced feedline directly to the tuner. Build the antenna yourself and use a good commercial feedline and quality insulators. For multiband operation it doesn't get much simpler or more effective. Might need to experiment with feedline length for some bands; might not.

All antennas are compromises in some way, and this one is no exception.

__________________
If you're like everybody else,
you're about average.
73 de K7KBN
CWO4 USNR RET.

You got some good answers and, well...

A lot depends on what you want to work.

If it's DX on 160 and 80 the antenna needs to be quite high to keep up with the Jonses. If you want to be regional and work your buddies a few states over 60 feet in the center is optimum for 80 meters. 120' and your low angle will skip right over their heads. Plenty of folks on 80 use dipoles at 30' year after year. Same folks are not DX hounds.


Remember that maximum radiation takes place at the current maximum points of the antenna. Put up 130 feet center fed and the center will be doing most of the work on 80. Same antenna on 40 radiates most from halfway out on both wires.

The trick with a multiband antenna is to use good balanced line. Twinlead and windowline both suck when wet. Use real open wire line with plastic or ceramic spreaders. Feed with a good quality tuner designed for a wide range balanced load.

Double Bazooka is a cool name for a unnecessarily heavy antenna which loses power deliberately to exhibit low SWR over a small increase in bandwidth over it's dipole cousin.

Now that's the best description of a double bazooka antenna that I've seen in a long time!
I'm also a fan of parallel feed lines. Not having found any of the 'bare' wire type ladder line in quite a few years, I use what I can find. Did the 'DIY' ladder line -once-, don't plan on doing that again, I hope! Oooo, that's fun. Also found that while it's wet, just as said, it does change tuning over a fairly wide range. Using wax, etc, does not help things, since most waxes are conductive to some extent. Just like your millage, that 'conductivity' changes.
Best advice for a tuner when using ladder line is the 'biggest' one you can find. Not big as in power, but component 'size', usable range of tuning. Oh well, lot's of little thingys can make a big difference...
- 'Doc

Tony,
you might want to take a gander at this.
http://www.eham.net/articles/21682

__________________

If you run, you'll only die tired.
CDX-251,2SF251,AE926, N9MSH

That's what I run. Love it. Simple. Works great. Cheap to build.

What is the minimum length of coax required to operate a 102' G5RV?