You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
Click here to find out how to win free radios from Retevis!
I'm building a conduit pole dipole will be up later today. I just figured that if I go to the store and get the stuff to make and antenna for 7 dollars and take a little of my time and have a decent antenna then give it a try before I go buy a 5/8 ground plane
Well there ya go Ron. This can certainly be done but you're going to have to come up with a way to create a ridgid, yet non-resonant mount to attach a pipe-style vertical dipole to.
The overall length of a folded dipole is exactly the same as that of a conventional dipole. Difference is that the folded dipole requires a balun if you're feeding it with coax because its feedpoint impedance will be somewhere in the vicinity of 300 ohms.
Happily, most TV "twinlead" is 300 ohm stuff. Run the twinlead straight from the tuner, or run 75 ohm coax to a 4:1 Balun, with twinlead the rest of the way and you're good to go.
I guess what I'm wanting to maybe do is to shorten the straight length and make a "J" out of the ends say like 6 ft straight and "J" the remaining 3ft on each end. This would use PVC tubeing with a wire inside. In this configuation it would take up less height if it would work.
I wonder if you did two verticals at 4 foot then two horizontals at 4 foot would this work as dipole you know kind of make it look like a field goal post
Experiment! Do a little studying on antennas and try whatever sounds like it might work. With something like the MFJ-259B, it's so much easier today than it was 50 years ago (and yes, I was experimenting with antennas 50 years ago).
Is it feasible? Yes. There are a couple of ways to get a vertical polarization from a loop. One way is to hang it vertically. Another way is to make it horizontal with a rectangular shape, square-ish, and feed it in one corner. Either way, if you're going to feed it with coax, use a 4:1 balun. A loop's input impedance is something like 150 - 200 ohms, give or take some. That'll get you in the 'ball park'.
- 'Doc
if i wanted to make a dipole easy, couldnt i just get 2 pieces of RG58 (with a PL259 on the end) 8-9' long and connect then into a 'T' conector and run another piece of coax from the T to the radio? this would aleviate the wire stripping and soldering but I dont know if it would work. Sounds very easy though.
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.