I have made Quads and Quagis in the past but I used 5/16" in wooden dowel for the element cross supports then painted them with Appliance epoxy...! Very durable..!
@patrickhudgin2287
9 жыл бұрын
Dave, Thanks for the quality video. I really enjoy the technical education that you put in this and your other videos. The steps calculating the dimensions and reminders on the formulas is appreciated. Now I am looking at what I can stuff in my attic, I live in a neighborhood with a HOA. Love the challenge of what I can do with stealth in mind.
@Aemilindore
5 жыл бұрын
Just love your antenna videos. They are like food
@DaveTadlock
12 жыл бұрын
Not including a matching section if used, you may use either a random length of coax or use multiples of a 1/2 wavelength. For VHF/UHF just keep the cables as short as possible without leaving a lot of extra coax rolled up in the shack. Using 1/2 wave multiples should help indicate a more correct SWR reading if connected directly between the antenna and SWR meter. Actual SWR to the radio will vary with additional patch cables and inline equipment. 73! :)
@rgharley
12 жыл бұрын
Dave, Thanks for the reply. I have located some 3/8 x 4ft fiberglass rods at a local hardware store. The original were 1/2 in diameter so I will have to source some aluminum to fit the rods. The rods I found were for electric fences. Thanks, RG
@SUPERALASKAMAN
10 жыл бұрын
Great videos Dave! Building a quad for 10 meters INSIDE my living room! N6UZD
@JonnKammeron
7 жыл бұрын
HI Dave. Many thanks for your great channel.
@timdbl7804
Жыл бұрын
I suggest feeding via a balun, if using coax transmission line ( unless using gamma-match feed, although that has a tendency to skew the radiation pattern a bit)
@rayharkins14
9 жыл бұрын
Dave. Thanks for the ideas. I am thinking about a 40M quad. May be more than I am ready for.. 73 kb6lqv.
@n2rgt94
10 жыл бұрын
Another great video, Dave! Thanks a lot. My next project....73's de N2RGT
@michaelwhittle4759
8 жыл бұрын
love ya video's Dave very interesting and great ly demonstrated i'm ex vk3 been in NT a year no licence change here i operate and at moment i are limited in radio use to 10-15 mt rmainly hf .now i design own antennas mobile and home when have it is great watch detailed video's and great information.miss other bands hope get vk 8 licence tranSer soon.
@chrismosquad1056
Жыл бұрын
Greay video! Thanks, Dave!
@DaveTadlock
12 жыл бұрын
You can download an Avanti AV-122 PDL-II manual from cbtricks dot com. The three runs of copper wire sounds like a modification for multi-band use but I would not know for sure unless I saw it. The fiberglass can be replaced with new. If the fiberglass spreaders are tapered then you can use the same or a piece that is the same diameter as the part that fits inside the aluminum tube. Attach the elements by drilling holes then use hardware or attach as shown in this video. Thanks for watching! :)
@purplemutantas
12 жыл бұрын
I hope to get my license soon. I look forward to building antennas. I have played around with home built antennas for 2.4 GHz. I have a copy of the ARRL antenna handbook. Pretty amazing stuff. I am thinking for starters I want to make a 1/4 wave ground plane for 2 meters. From there I may go for a yagi-uda. I can't wait to get my license so I can expand my antenna geekery.
@AvocaSingleTrack
7 жыл бұрын
Dave , would it work to delete the reflector at the rear and use a second director instead , to produce equal gain to both the front and the rear of the antenna ? (Driven elem in the middle with a director in front and rear of it)This location is a narrow valley about 2 miles wide but about 20 miles long, so no need for gain to the sides. Some gain to the northeast and southwest would be nice. Or should I just build a single loop full wave quad ? If I do a single loop then i'm at 100 ohm . Not sure if there is such a thing as a bi-directional 3 element quad with 2 directors instead of the standard Reflector--Driven---Director design ...lol ...Thanks !
@ellacraddock6415
2 жыл бұрын
Well done thank you 73 Ella.
@johnwilson4909
5 жыл бұрын
Tad, great video, however it is not clear how the elements are spaced from each other. Is the total wavelength 1/4 wave? Are the parasitic elements equally distanced from the driven element? Assuming overall length of 1/4 wave, is each element 1/16 apart? (Assuming 1 reflector and 2 directors). Please explain. My apologies, I placed my question at 13 minutes, and you began explain the spacing at 13:15. No reply required, thank you for the explanation I should have waited for.
@rllawson24
7 жыл бұрын
great informitive video im building a 10 ,11 metre 2 element quad thanks again vk4ftrl
@0ndrous
7 жыл бұрын
I built a 3 element for both bands, there's definitely a "Fudge-factor" in building a single antenna for such a wide frequency range. How I approached this challenge was to share the driven, of course, necessitating finding a happy medium in frequency which ended up at 27.750mhz. I built the Quad as a 13' long 3 element, tuning the director for 28.4mhz and tuning the reflector for 27.2. This way I had a good 2-el for both bands with less than a 2:1 SWR on both bands. Another swr tuning option would be to tune the horizontal matchline for 28.4mhz and the vertical matchline for 27.2mhz, simply using a single 11' - 12' long folded single wire per polarity, kept 2" from the boom by using an L-bracket hose-clamped to the boom and bolted to an SO-239. Simply cut to resonance beginning at about 12'. Good building & happy DXing! 73
@leonardopagliaro1725
4 жыл бұрын
muy bueno, deberían doblarlo al castellano para que el resto de los países de América que ablan en castellano lo podrían entender
@dimasaviador
12 жыл бұрын
Dear Sir, I have been watching all your videos and I have a question to put before you. What size of coax should I use with the Quad? Half wave, or any length that gets to my station? Thanks a lot for your answer. Dimas. Brazil. PS- Keep up with the lovely work.
@PatAutrey
3 жыл бұрын
I’m hoping to create a 2 m Multi element vertical dipole To use as a base station antenna at home I would like for all of the elements to be in phase so that they all radiate at the same time I just don’t know how to create the wiring harness to attach it all to get it to work correctly Any recommendations or advice would be greatly appreciated
@BretChilcott
Жыл бұрын
Great video. Thank you for sharing your knowledge. Bret/AC0AE
@RuVi78
2 жыл бұрын
cubical quad 5bands... 2el has the best performance or should buy 3el? Also its to complicated for me have to adjust impedance or feeds.... I tought it cames already tuned. Any help?
@DaveSquibbSr
4 жыл бұрын
If you built only the driven element and raised it up would it work omnidirectional that way? or does it absolutely have to have a reflector?
@hobie1dog
8 жыл бұрын
Thanks, I.learned a lot.
@alaskanalain
3 жыл бұрын
Don't lie Dave, we all know you chose the dark side and that is actually a star wars T.I.E fighter.
@luistito10
11 жыл бұрын
hola,¿sirve para tv digital?
@redeyegooner
Жыл бұрын
I'vre been wondering how well/badly this would function if horizontally polarized, but then orientated vertically so that the reflector was at the bottom, the driven element above and director on top? Have people tried this already?
@daviethevaper
20 күн бұрын
why would ya do that unless you was trying to shoot drones outa the sky. its a directional antenna so where ya point it, is where it works best
@heffptbo
2 жыл бұрын
i am wanting to build a 2 element for 11m. I have never done one before. I am wanting to try a direct feed vs 75ohm patch cable. Can i use insulated copper wire with the same measurements as the calculator spits out?
@jamesaubrey1965
4 жыл бұрын
Dave just wondering if you have ever built a PDL2 just wanting to try my hand in building on for 11meter. If you know the specs or maybe you have built on similar not sure where to start. thanks.
@wa4aos
10 жыл бұрын
Very helpful video..Thanks... Any thoughts on a simple way to wire up a 20 meter boom-less quad from the ground? I thought about using a J Pole to support the boom and rotate it as I wire each element.. 73, Glenn WA4Aos
@ifell3
10 жыл бұрын
Hi, your videos are really top quality. From what i understand you can't have a 1/4 wave yagi, is that correct. Could you have a 1/2 wave yagi for a cb/11m, but whip the elements so it turns out about the same size as you have in the video? And then could you use this same principle to build a whipped cubical quad? Regards jon
@rgharley
12 жыл бұрын
Dave, I just got my hands on a PDL Quad from the 70's that is in good shape except for the rusty bolts. Each element has three runs of copper wire which I have never seen before. Any you provide any information on this design? Also the fiberglass poles could use some attention. What do you suggest? You have great information. Thanks.
@rogerbwalkersr8609
8 жыл бұрын
Hi Dave, Is It possible to build three peg leg antennas but mount them with four feet spacing thus being able to switch from one peg leg at a time thus creating a superscanner?
@krishnaswamy516
5 жыл бұрын
Extremely well communicated
@egycoordinator1470
8 жыл бұрын
Hi Dave, I want to build a 11 mtr cubical 4 elem., what will be the best balun for use with this antenna?, I have on hand a balun 1:1. Thanks in advance, I wait for the answer.
@DENMONKEY
12 жыл бұрын
another great video Zed. Looks like you've lost a bit of weight there too. looking forward to the quagi :) 73 vk2mrx
@bomo8497
5 жыл бұрын
Would like to build this for the 11 meter band is there a big difference?
@wigm
12 жыл бұрын
Have you ever worked with a Quagi? Found some work by N6NB with the quagi and have thought about building one. I've watched some of your videos and have found them very educational, especially the inverted V antenna videos. 73 de K4LCM
@donatusyoutubization
12 жыл бұрын
good job
@theodoresears4679
6 жыл бұрын
It would be nice for fringe uhf dtv.
@rcelectronicsllc9400
4 жыл бұрын
Adjust your music level to 1/2 of the volume on your videos.
@ebear1ca
10 жыл бұрын
How about the body centered cubical quad. Ted VE6AMR
@lurchcb
12 жыл бұрын
dave i was hoping that you would make a 2 element cubical quad antenna for 11 meters. im just starting out in cb radio and really interested in antenna design and have watched all your videos. so how about it a video for a 2 element cubical quad vertical polarized antenna. thanks for the great videos. make lots more
@santosmorales8911
8 жыл бұрын
Información solamente en inglés era bueno español aunque se entiende
@MsJinkerson
8 жыл бұрын
I hate the damn formulas just tell the legnth
@wa4bwo1
6 жыл бұрын
N
@jackson4861
5 жыл бұрын
Another great video but way too long as usual, couldn’t watch.
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