Patrick Hudgin: 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.
Ray Harkins: Dave. Thanks for the ideas. I am thinking about a 40M quad. May be more than I am ready for.. 73 kb6lqv.
carlos gonzales: hola,¿sirve para tv digital?
uintabri: Quads are great antennas if you have the space.
c b: 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
purplemutantas: 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.
gus gann: 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.
Dave Tadlock: 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! :)
gus gann: 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.
Dave Tadlock: 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! :)
Dimas Filho: 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.
PS- Keep up with the lovely work.
Donatus Narotjo hawirudo: good job
Jackupnow: GOOD JOB
DENMONKEY: another great video Zed. Looks like you've lost a bit of weight there too.
looking forward to the quagi :)
wigm: 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
Chef de NYC: Thanks! I'm more info ultrasound type of work. I learn most of the stuff myself online. Just only recently start looking for a school to make things "official". Hehe