Dual Band 2m / 70cm vertical dipole BUILD #2 Part 3 of 4

[@newhampshireoutdoornetwork9505]

This was very easy to follow this up coming week I'm going to make one of these. Thank you for sharing your knowledge I got my license about a year ago and I think I might like building the antennas and other electrical projects more the keying the mic hahaha.

[@BlueDawn1776]

Really well done video instructions. Thanks for taking the time.

[@kg7tuo999]

No problem. I wanted to truly make it a do it yourself set of instructions. A lot of folks have built these so I'm happy.

[@zachs.9220]

Hello, this is a great project and I am working on one now. I am curious because I am trying to learn, but how is the harmonics of the length figured out. Is the 6 1/4 inch a fraction of 70cm, same with 18 5/8 inch and 2m?

[@virgilholt1395]

Very good video by the way. detailed, but that instills confidence in builder.

[@virgilholt1395]

Suggestion... when you get the "U" bend int the ball park, I would drill two holes in a spacer the exact distance apart, and then epoxy it in place to guarantee that it is parallel.

[@catfeline1530]

Beautiful work. I am thinking that bypassing the so239 and just running a cable would obviate some impedance and improve swr?

[@kg7tuo999]

Yes, any time you can eliminate adapters, connectors, etc. you will improve losses.

[@petergoudy9013]

Siq build. great editing. teach!!!

[@alfredolissineto3521]

Hi, can I wrap 2 thinner wires to achieve 3mm thickness? 73

[@izzzzzz6]

Did you try with a different sized radius yet? Math might be more complicated but there might be some clues in the calculator for the folded dipole. Not that it is dual band but it can calculate the distance between the two sides depending on frequency. I'm just wondering if performance might be optimised with a different gap. (total wire length might change). www.changpuak.ch/electronics/Dipole_folded.php

[@kg7tuo999]

Well two things. 1. i've moved on to other projects. Built a 2m vertical dipole from zip ties, barbed wire, and two wood scraps....no solder, hardware, etc. and it worked great. I shot a quick vid to show it today before taking the feedline to make my latest creation.....an antenna that use water (yes WATER...tap water at that) for the elements. First prototype works though I'm going to have to work on the SWR for 2m. It happens to be great on 440 though. 2. The washers short the RF energy between the two vertical elements so I don't think longer wire in a bend will hav an effect. Electrically there should be no energy going there. The gap itself could change performance due to interaction with the other element but that would be because of a greater or lesser distance between the radiating and non radiating element, not the added rod length from a larger radius bend.

[@spraymadfoamyo7262]

If only you could make something. I don't know, like, a jig maybe. And then find some kind of un-reactive material to space the two elements equal distance away from each other.

[@stephenwhite1607]

I think (perhaps because I have professionally bent and installed a few hundreds of miles of conduit and wire) that he should have used a #2 Philips for the former and something in the next hole to bend against. Then over bend elements about 10 to 15°. The spring back amount will vary depending on the material and it's temperature. A small wire or tubing bender will not help because they won't bend such a small radius.