2 Meter Twin Lead J-pole Antenna

How to make a 2 meter roll up j-pole antenna using 300 ohm twin lead cable.

[@RESlusher]

It's good to see ya back in front of the camera, Dave! I've got two questions. (1) Are those measurements you gave the same if I was using 450 ohm ladder-line? (2) How high could I run something like this up? Say I had 5 army surplus camo poles. Should I make the top one a fiberglass one? OK, so that's three questions! :)

[@victornelson5568]

Best videos on KZbin!

[@RVArchery]

Nice antenna Dave. That's a lot like mine but instead of 300 ohm, I used 450 ohm window (ladder) line and it too, was my first home brew antenna. I also put an "air choke" on mine as well just for GP. Those antennas work really well and are great for portable use. Great video & 73 - KF7TOV

[@izzzzzz6]

Does it not effect the impedance with it that close to the wall? I would have thought you would need to have it hanging or supported in free air to get an accurate reading.

[@SpectreOZ]

Cheers thanks for the alternative 300 Ohm twinlead design Dave...

[@DoctorDon]

I've often found that taping the coax too close to the shorted end causes me to have trouble tuning it. But if I tape a couple of popsicle stick pieces between them that I have much better luck. I just offer that in case anyone has trouble with that themselves.

[@jayhalfmoonfarm8094]

I built one of these with some ladder line my uncle gave me and put a 70cm trap on it to make it duel band. it is a nice design I got off of CQ online.

[@bigphil6980]

hi could you use heat shrink instead of electrical tape to weather proof it more.keep up the great videos as I am learning a lot as a beginner in the hobby working for my foundation certification I cannot wait to try out some of your antennas, keep up the good work thanks from the UK

[@justinavery4047]

I would use heat shrink over the electric tape.

[@BikerBytes]

I might give this antenna a go, I like its portability. I’m a noob so could do you explain what the purpose of the top part of the antenna does that you put a break in since it’s not now actually connected to anything. Thanks. Jason.

[@ottowachter4255]

Dave, thanks for the new interesting design.I'm looking for a 300ohm cable and shall make it.))73 from Ukraine !

[@TheJimiking]

Thanks for another good video Dave. Have a question? Does the deferent length of feeder affect the SWR? 73, Jakub

[@luizfranco3673]

DAVE, Thanks for your antenna videos. 73, Franco - PY1EPU

[@shifty212]

Hi Dave. Can I tune it by taking little by little off the top?

[@grantfullen9559]

Thanks for your antenna videos KM4BOB

[@gregorybirchfield4952]

Does your readings on swr change once you put it in the pipe ?

[@andreVE4BK]

Aren't the measurements different if you put your J-Pole inside a PVC pipe? Thanks

[@christopherdcorran]

Is that version of J-Pole OK at 70 cm? Often a resonant antenna at 2 m has a broad harmonic around 70 cm and serves as a Dual Band. I'm looking at making a copper pipe J-Pole but one of these inside a PVC tube looks like a great option!

[@usarmyfl1]

Wow thanks for sharing this video. Until now, all I have found as far as a roll up sim jim was the one made by N9TAX, and Nelson Antennas, which I am sure are great and not a bad price, but I had no idea it was this easy to make. Does anyone know how this one compares to the N9TAX or the Nelson antennas version? Thanks!

[@larryjackson6064]

Thank's Dave ! 73 KK4SPW Larry

[@1fanger]

Hi, what are your thoughts on using heavy gauge speaker wire in the same configuration? Thanks of your videos, 73, Joe KC3BXZ

[@piukeyen]

Hi! Did you try making one with speaker wire? I've been wondering the same. Wire speaker is more maleable, but it can also twist on itself, would that deform the radiation pattern? 73 de LU4HAM

[@stephenwilliams5201]

Ha ha. Have to begg to get recognition. Here. Then somebody cuts the repeater off. Simplex near by works fine, and found that as little 2.2 watts covers over 30 miles. All the way up at 5. It's Scarry. Tks for good show.

[@vrb1960]

I’m from Raytown, really enjoy your videos, thanks. Which repeater do monitor regularly, N0DPR\ Brad.

[@lenmcclellan6967]

Thanks Dave you have some great videos. Len KE0DQS

[@vo1um1]

Dave .. have you ever made a beam antenna for 1090 mhz .. i am vo1um and as part of my Amateur Radio hobby i also like to track Air Planes.... if u have made a beam for this band could u post the link if not would u consider do a video of one.. and sharing it...

[@jeffcauhape6880]

Could you post the dimensions in terms of target frequency?

[@ralph9987]

i would live to make this antenna for marine vhf on 156.8Mhz. where can i get then dimensions for the marine band

[@TiredOldMann]

What would be the range talking to someone on another hand held radio?

[@chriswalport3599]

Could you use a j-pole For a scanner? If so how Would it be made or modify? Pm me please about this Have lot more questions.

[@N2LRB]

Dave, I have seen other videos where putting a twin lead J-Pole (N9TAX) inside a pvc pipe de-tunes the antenna. In your video you did not show yourself using the J-Pole in a pvc pipe. I wonder why yours does not de-tune?

[@DaveTadlock]

No reason not to use the antenna in the pipe other than just installing it somewhere. I've not had any problem with it inside PVC pipe.

[@cougarhunter33]

It would seem to me that PVC pipe would electrically be the same as air.

[@robertabuonanno7153]

N2LRB è

[@najlepiejsmakuje4063]

hi how to make 2 meter twin lead j pole antenna for 173.000 Mhz ?

[@eduardomarcal6090]

Can we put 50W on it? Thanks for videos Dave. Eduardo - PU2UW

[@justinavery4047]

Yes, I use mine for 25W all the time. and 65W sometimes. I read somewhere that people have tested them up to 100W.