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.
Mark Ruhland: Very cool!!!
Mark Ruhland: This is a very cool design for a 2 meter antenna!!!
Mauricio Riqueelme: anto DB ???? uno ???? angulo de radiacion ?????
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'
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.
Electronoob: Geeking Out: brilliant :D
Gary Harrison: I hope you are not using standard 60/30 solder. If so, you just put lead in
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.
Bryan Miller: Bob Heil had it right in one of his books he said "every thing that exists
is because someone tried it"
Bill Bijnsdorp: What about a telescoping antenna from an old tv set
Camp Cossack: ROFL!! Love it! Thanks Dave, I'm stocking up on connectors, paint cans
and copper wire.
Vasile Pop: Very neat!
73 de VA6POP
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.
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.
Bernie Edwards: 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.
VE2ZAZ: Some of the baby milk formula powders still ship in metal cans.
cougarhunter33: I think Best Choice still puts coffee in metal cans. I'll have a look when
I'm at the store tomorrow. KB0MLR
vetham100: i am going to use a folgers can, i want my antenna to be strong :)
Dave Tadlock: That's a good idea. I left the insulation on and so don't have too much of
a sharp tip but still a good idea. Thanks for watching and 73! :)
purplemutantas: The coffee I buy comes in metal cans! MJB still uses metal. I have a newly
emptied coffee can. I am going to have to try making one of these. I will
also have to take a look at the dual band coffee can antenna. It would be
interesting to see how the coffee can antenna compares to my Ed Fong J pole
Nick Leijenhorst: Hey Dave, amazing channel you got here! I was just wondering... Why do you
need impedance in an antenna? Or is it the impedance in the connector?
James Wood: My Maxwell house coffee cans are metal...
John Zenick: The round pizza sheets that you can buy could work too...
not2fast4u2c: NEAT Idea !!! Resterants use big cans for Vegetables That would be a source
for a can
N0JRJ's Ham Stew: I was thinking you were gonna make a 2 meter CanTenna - using the inside of
the can to make if directional. But hey, that is a great idea as well!
Thanks for the vid
Alford Santee: Nice I followed these direction and made my own ! I used a 1 gallon paint
WX9DX: Thanks for a cool project for emergencies.
bill ethier: Do you think your cable length had something to do with your element
length? I have stuck a 19 inch piece of copper wire in my portables BNC
connector and have hit repeaters 25 miles away or so. How about doing a
video on portable antenna experiments/ projects... alot less simple than
mine though Thanks, 73's KB1YDB Bill.