ifell3: 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?
ebear1ca: How about the body centered cubical quad.
N2RGT: Another great video, Dave! Thanks a lot. My next project....73's de N2RGT
Shane Pander: what is the equation for finding space length between each element. I a m
building a four element 152mhz quad. I have already figured my elements
and spreaders mathematically, but how do I figure out the spacing between
each element. oh, and how do I figure the space for the drive element to
place my coax cable? thank you for all your help sir.
wa4aos: 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..
julioup255: Good day friend, excellent video. Sera that his friend could send me a
diagram of this antenna so I can use a radio Cobra 148 GTL, would be
grateful, a big hug. I'm here in Brazil in Sao Paulo.
DENMONKEY: another great video Zed. Looks like you've lost a bit of weight there too.
looking forward to the quagi :) 73 vk2mrx
carlos gonzales: hola,¿sirve para tv digital?
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
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! :)
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
Jackupnow: GOOD JOB
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
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. Dimas.
Brazil. PS- Keep up with the lovely work.
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.
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. Thanks, RG
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! :)
Donatus Narotjo hawirudo: good job
uintabri: Quads are great antennas if you have the space.
Shane Pander: does the boom length really matter? as long as the distance between the
reflector, driven element, and the director is accurate; does the boom have
to be much longer than the specs of the fore-mentioned? , I am building a
152mhz quad, with only one director. thank you, you have been a great