TV antenna

[pete42]

thanks Gus I do remember seeing those our local club is going to have a J-pole build
upcoming I have an old one made from copper. I saw a neat way to attach the coax
to the antenna's stubs using copper pipe clamps. I tried using a so-239 with a wire soldered
to the center pin and the braid under a hose clamp it didn't work well so I hoping someone
will get it to run I had two towers hurricane blew one down along with couple beams and
2-meter vertical with the lack of 2-meter traffic anymore I don't want to spend a lot of money
for another vertical.

pete KB8EMD

[GerryS]

2 meter twin lead j-pole. I doubt that it would of much use for TV reception though.

http://www.lowra.com/antenna/flexjpole/twinlead.pdf

Cheers,

Gus

I built one of tese a few years ago for field day use. It worked better ham the rubber duckie, but not hugely so....but on 2m it was more about consistency than anything else...

[Bogo]

I know enough about antennas to know I don't know crap about antennas...

I hear ya loud and clear. I'm in the same boat. I always look things up when designing antennas.

I was thinking about a dipole between trees, but I haven't a clue what length(s) or how to connect it to coax.

What's the frequency? This web page looks good: http://users.wfu.edu/matthews/misc/dipole.html You might want to look up the HDTV frequencies and plug them into the equations on the page. I just searched for "TV dipole antenna design" at google.

A friend picks a couple tree limbs about the same height and right orientation to the transmitter, and throws a line up over them. He then attaches a few dipole antennas he got decades ago. Each dipole is 1/2 wavelength long, and spaced roughly 1/2 wavelength apart. Each dipole has the same length feed wire to where the signals are combined. The individual dipole antenna wires are kept straight with the help of fiberglass tent poles. The poles are spaced at the right lengths apart using ropes. This site mentions antenna types and has a bit on stacked dipoles: http://www.hdtvprimer.com/antennas/types.html

I think I've given you enough to get you into trouble. I can just imagine who would be called when a stacked dipole is setup in a campgrounds...