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Trying on 6920 AM
jackson_r:
--- Quote from: Stretchyman on November 27, 2015, 2137 UTC ---6' whip at 5 feet may get you 2 blocks with a CB radio but on 40m your going to need something a bit longer!
For NVIS a dipole made from thin (invisible) wire can be 7' from the ground and can run along a fence top but will need to be 70' long.
I've done some experiments recently and can put a decent signal into Holland from the U.K. about 400 miles with 10W.
This will only work during daylight hours, so your going to need a 35' vertical at night and you'd probably work from coast to coast, 2000 miles or so.
Use what you can but don't expect you're going to get anywhere with a 6' antenna at these frequencies.
OK!
--- End quote ---
I appreciate the cold hard truth, Stretchy. I actually do have a 40 m dipole sitting in a box that I've been thinking about stringing across the top of my 6.5' privacy fence in the back yard. Plenty of room, but the only thing that's kept me from trying it is first, that I'd have to run about 100' of coax to get out there from the shack, and also the fact that I've read somewhere that a fence top mounted dipole like that is going to be very focused and directional, and I didn't know if that was going to cause me problems. But I'm willing to try anything once. :)
Antennae:
You could also try a magnetic loop. Those things are high performance for their size. Make a 9' diameter bad boy out of plumbing copper pipe!
jackson_r:
and I forgot to mention the 1 KW amplifier I have arriving in the first week of December. That should help me play with the big boys. Or maybe something will explode. Either way, it is exciting. ;D
Stretchyman:
OK with the amp but you'll do fine with 10W and an antenna that works.
1KW will probably just wipe out all the local phone/tv/radio etc and get you into a heap of trouble.
The loop BTW is a good antenna but your situation (as I understand it) needs something more covert.
jackson_r:
--- Quote from: Stretchyman on November 28, 2015, 1427 UTC ---OK with the amp but you'll do fine with 10W and an antenna that works.
1KW will probably just wipe out all the local phone/tv/radio etc and get you into a heap of trouble.
The loop BTW is a good antenna but your situation (as I understand it) needs something more covert.
--- End quote ---
Well, I was being a bit facetious. While it's indeed a 1 KW amp, I have no intention of using it as such. Once I get a good antenna up and running, I might use it to drive 200-300 watts occasionally. Today I'm going to tack down my 40 meter dipole on the backyard fence and see what that does.
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