g0fvt: It is a good demonstration of what can be done, incidentally IMHO the can
is a bit small for 2m, ideally from the hole to the edge should be a
quarter of a wavelength, I suspect this is why the whip ended up at 22"
when I would normally guess at about 19".
Nevertheless thank you for making a well presented video.
Patrick Murphy: Great videos as always but the audio in the could use some leveling... your
quit voice vs the loud coffee can.
smallenginedude71: milo are still in metal cans and are quite large
jacky Parker: Done similar myself and it works a treat
Kd8OUR: Sleeve antennas work well and are easy to make. paint cans work good
too. You can even get away with using nothing but the coax if you have
mad hatter coax hacking skills. Stick the whole thing in a fiberglass or
PVC tube and seal. I work at an airport. VHF/UHF sleeve antennas, ground
planes and discones.
If you have an old mag mount the element can work well with a coffee or
Shawn Rullens: you could a coffee can for 70cm too.
Bill McGraw: Is that 5/8 of a half wave? I scribbled a long time, confused.
Robert Fern: impressive! I have to try this one but with a paint can since those coffee
cans are collector's items nowadays.
thanks for sharing.
Jonathan Warner: Is it just the metal bottom of the can that is providing the ground plane?
If so this should work with one of the cardboard sided coffee cans with the
metal bottom. I wonder if extra radials would make a better ground plane
26CT1520: Excellent videos, thanks. 73's
Ade Larsen: You don't have any paint cans ??
It's time for you to paint the house !! Make your wife happy !
Anthony W Stanton: Way cool video of a home-brew antenna! I gotta find a coffee can now and
try it! Oh, a pizza pan works great as a ground plane as well!
73 de AC6GM
Mauricio Riqueelme: anto DB ???? uno ???? angulo de radiacion ?????
ad5kl: Great idea for an attic NOAA or VHF scanner antenna.
Fred Romano: Does it matter if the coffee is regular or decaf?
Mark Ruhland: This is a very cool design for a 2 meter antenna!!!
Jopa Liz: Может лучше с пивной банки?)
Bill Bijnsdorp: Hi Dave
For the vertical element you could use an antenna from the back of a tv or
portable radio. No need to cut wire, just extend as needed. The ground
plane could be the metal screen from a fan'
Bill Bijnsdorp: What about a telescoping antenna from an old tv set
hi li: like the adult version of plastic cups and a string. all you need now is a
coffee can emitter.
Mark Ruhland: Very cool!!!
Andrew Polezhay: I wonder how to change the SWR if Bank of coffee will be slightly smaller:?
73! de UT1ZZ
721NorthernAlberta: Amazes me on how you whip an antenna. Good going Dave.
WD7N: I've made several "cantennas" over the years, The easiest way to solder the
center conductor on a SO-239 is to tap it out of the connector then solder
the wire in place. Once done just tap it back into place in the connector.
That way you don't melt any of the insulating material around connector and
have a better solder connection as well.
Camp Cossack: ROFL!! Love it! Thanks Dave, I'm stocking up on connectors, paint cans
and copper wire.
Electronoob: Geeking Out: brilliant :D
Bryan Miller: Bob Heil had it right in one of his books he said "every thing that exists
is because someone tried it"
wulff707: Yo the people that keep talking about Dave putting lead in his mouth,
electrical solder now days are LEAD-FREE! Just like paints.
Also. someone said a large can wasn't the best for 2 meter, he is simply
using the can as a ground plane (artificial ground!) you could use a 55
gallon drum if you wanted, he isn't using the can as a reflector by putting
the element inside the can.
Please people read before posting.
Vasile Pop: Very neat!
73 de VA6POP
Matthew Curry: This is a very cool design for a 2 meter antenna!!!
TREE HUGGAH: now that is pretty cool.i put that one in my favorites list.great work sir.
watch for a coffee can antenna in all the catalogs for the holidays,ya
better get your patent together!!!! 73,KB3YJO
Jonathan Sawyer: I wouldn't hold leaded solder in my mouth. Who hasn't got that secret stash
of "proper" solder?
N0rthwestRadio: This would be a great way to introduce the concept to others and what a
great platform to do it with. After the experiment you have the delay lines
to use to build a Quad or Yagi type design using the same principle. The
next step would be set the cans in a three point triangle each having its
own delay line to a control point. Using a switch setup to excite certain
feed to change the patter without moving the cans. Am I being to hard on
ya? Grin... Phasing is fun experimentation. Apply to HF!
Tianyi Xie: Dave you are wasting this coffee can. It can be made into a 2.4 GHZ
purplemutantas: I just built this antenna today. It works better than my Ed Fong J pole!
It's pretty amazing what a coffee can and coat hanger can do! We are going
to be doing some simplex practice on our local new operator/tech net. I may
have to stick my coffee can up on my mast and see how that works out.
Thanks for the video Dave. 73
Adam Dickson: you could always just solder the wire into a pl259 no need for a coffee can
then easier for handheld use
Brian Shriver: Very cool project. I have to get an analyzer like that.
Spankbucket here to stay: cool idea....I'm going to give it a try!
purplemutantas: Simple. It's just a quarter wavelength element. So just calculate the
wavelength at your chosen frequency and divide by 4. It's pretty simple
stuff. Stuff you really aught to know before you start building antennas.
Dave has a great video on dipoles. Check that out. It will give you some
humaxf1: Nice project. Try a metal dustbin next. A tip to prevent breakout on the
other side of a hole, get a scrap piece of timber on the opposite side and
press against the force of the drill. You'll have a burr free finish.
TREE HUGGAH: BRAVO!!!! what a great project,you should patent that idea. 73,KB3AUM
Celso Lina Da Silva: Please could send me by e mail all measures of antenna metal pot. even that
was not clear to me the measure. Email: Matrixtwo@msn.com
slamdvw: A safety tip: put a wire nut in the end of the radiator to eliminate the
sharp point... and make it easier to see.
FannyAckin: does it work better with decaff
Joel Tan: For instances, if i am using a 4 copper wire as a base support for the 4
holes in the SO239 socket, what is the differences of using a 4 copper wire
or a coffee can as a base support? Does the base height matters if i am
constructing a 433MHz antenna. I was about to ask about the same question
as the comment below.
OneStudPuppy: Awesome. This project is one of the reasons I became a ham. I like to try
off the walk ideas and share the try and see idea. 73
MarvinMcGill: What kind of bit did you call that gold 1? Will it work for making a hole
in the top of the van roof for a MNO mount?
Bass Assassin: Would you email me what I need to make this I want to build one
Nolan Rollo: I didn't see anyone comment on this about the filing but the first day I
used a metal file in front of an electrician I got yelled at because I
pulled the file back against the metal. If you push (cut) and lift up
(instead of sliding back up on the edge of the metal) you won't flatten
down the teeth on the file. :)
purplemutantas: I just had another thought about cans. Coffee cans are number 10 cans.
Other things come in number 10 cans. Tomatoes for example.