Multiband HF portable antenna, the easy way.

  Рет қаралды 112,945

rcobo101

rcobo101

7 жыл бұрын

Short video about how to build and deploy a 20 ft. multiband HF antenna for portable operation.
/ ac2rj

Пікірлер: 76
@WilliamParmley
@WilliamParmley 3 жыл бұрын
I came up with almost the exact same system back on the 90's and it works very well. I used 32 feet of wire wound helically on a 20 foot "Black Widow" pole. I designed my L-network tuner to connect directly to the SO-239 on my FT-817 so I could use it for pedestrian mobile.
@ericbergmueller2981
@ericbergmueller2981 7 жыл бұрын
You have a nice spot and a nice view for radio!
@ox6466
@ox6466 6 жыл бұрын
I built this antenna, put it on a 14 foot light stand with 3 radials. Working contacts like crazy. My third contact on 40 meters was to Italy 4860 miles away.. Thank you so much for sharing! Makes for a great portable antenna to carry and use anywhere! 73s
@rcobo101
@rcobo101 6 жыл бұрын
Glad it worked so well. Thank you so much for the comment, Brian. 73s.
@marciuschester3683
@marciuschester3683 5 жыл бұрын
Good evening Brian, How high off the ground did you have you're antenna. I'm planning on building the same one but with a 20' fiberglass pole with 33'.9" of 18g wire attached to a 9:1 unun transformer 15' above ground with 33'.9" counterpoise wire stretched out down at 45 degree angle. Hopefully I will get some good skywave propagation conditions.
@colinsmith4185
@colinsmith4185 7 жыл бұрын
Superb! I like the idea that almost everything apart from the radio is home made,this is true Amateur radio,well done! Colin G1PGI
@rcobo101
@rcobo101 7 жыл бұрын
Thank you, Colin. 73 de AC2RJ, Ruben.
@NoMoreRadioMyths
@NoMoreRadioMyths 3 жыл бұрын
This is basically what I use. But I use different wire lengths so it is resonant depending on the band so I can use the rig's internal tuner. It hides nicely in a grove of bamboo trees.
@hondaridgelineenduser5934
@hondaridgelineenduser5934 6 жыл бұрын
Can you make another video on this antenna I want to make one like that. What wire did you use I'm curious to know
@mdouble100
@mdouble100 6 жыл бұрын
Very cool thanks for sharing. I love the fishing pole mast idea.
@EverDave
@EverDave 4 жыл бұрын
Is that Speaker wire wrapped around the pole? How did you connect it to the coax?
@kellypaws
@kellypaws 3 жыл бұрын
That's the spirit of amateur radio right there. Even more so with a Heathkit QRP rig.
@philnyc
@philnyc 5 жыл бұрын
I need antenna portable antenna for 80m . Will this perform well along with a tuner ?
@foxwedor6151
@foxwedor6151 6 жыл бұрын
Excellent belle video
@keithviglucci8306
@keithviglucci8306 5 жыл бұрын
Can you point me in the direction of how to build a small tuner like that for qrp work?
@TomParish
@TomParish 7 жыл бұрын
Well this is brilliant. thank you!!! I had not considered wrapping the antenna around the pole like that. Who knew. I'm going to give this a try today. I have a 27ft carbon fiber pole like that that collapses to 25 inches and only ways 10 ounces. I'm using a kx2 but I'm starting to really get curious about building a homebrew rig someday.
@timg5tm941
@timg5tm941 7 жыл бұрын
Hi Tom I am of the same mind as you. How did you get on with trying this out? 73s Tim.
@Mark300win
@Mark300win 6 жыл бұрын
Hi Tom Parish where can i get this compact carbon fiber pole from?
@rubenacevedo2484
@rubenacevedo2484 6 жыл бұрын
I did try a carbon fiber once...imposible to tune!. Have a fiberglass now. No problems at all. Regards.
@Michael-lo3ht
@Michael-lo3ht 5 жыл бұрын
I wondered about that since carbon fiber is conductive.
@rangerbud
@rangerbud 3 жыл бұрын
How much wire did you use on the vertical?????
@benshanealroberts4140
@benshanealroberts4140 3 жыл бұрын
do u use a counterpoise?
@benshanealroberts4140
@benshanealroberts4140 Жыл бұрын
no counterpoise?
@alfaqirilaataufiqillah
@alfaqirilaataufiqillah 5 жыл бұрын
How does this antenna perform for DX? Thanks, 73. de YD3KNJ
@Garbanzo884
@Garbanzo884 5 жыл бұрын
Counterpoise(s)?
@glass8121
@glass8121 6 жыл бұрын
what bands does this antenna cover?
@pieterdutoit9642
@pieterdutoit9642 5 жыл бұрын
Hi all great but pretty useless with out some number as spec lenth and saceing ???
@tonyridlen
@tonyridlen 6 жыл бұрын
Excellent video I just love to watch this one 73 KC9QVE Gas City,Indiana
@eduardopower5254
@eduardopower5254 7 жыл бұрын
Have you tried attaching a counterpoise from GND screw on radio?. Thanks for sharing
@rcobo101
@rcobo101 7 жыл бұрын
Eduardo, I have done it, you can see it here: kzbin.info/www/bejne/m57TmZeYhLOlhMU The beauty if this setup, is that can be very easy modified, and it's very good for experimenting and learning. At some QTHs and bands it improves greately with radials, but in others, I can get away without it. And when I go to the park, I may not put radials, because people and pets will trip over them. HI
@jvclarke1
@jvclarke1 7 жыл бұрын
With the number of turns you have around the 20 foot mast - are you certain that you are only using 35 feet of speaker wire?
@rcobo101
@rcobo101 7 жыл бұрын
Joseph, totally sure, only 35 ft. :)
@TomSP9TL
@TomSP9TL 3 жыл бұрын
@@rcobo101 I have a 7m long mast (23ft), do I also need a 35ft wire? Shorter? Longer? Or by trial and error find out what length suit my mast best?
@daryllamble732
@daryllamble732 7 жыл бұрын
Awesome video thanks for sharing your Ham Radio experience with us?
@chetnapatel9700
@chetnapatel9700 4 жыл бұрын
How can I decipher recorded digital communication over. I. R camera? I needed to know the radio frequency?
@ElectronicNoobBlog
@ElectronicNoobBlog 6 жыл бұрын
That's a HAM spirit, except radio everything crafted ;-)
@ahmedkhalil3015
@ahmedkhalil3015 7 жыл бұрын
In case someone hasn't suggested this yet, maybe you'd wanna share how you've made this nice keyer. 73
@ahmedkhalil3015
@ahmedkhalil3015 7 жыл бұрын
found it! 73
@rcobo101
@rcobo101 7 жыл бұрын
Great! It works fantastic for portable operation, I have been using it for almost 2 years and it hasn't broken yet :) 73 de Ruben, AC2RJ
@robertjackson3856
@robertjackson3856 7 жыл бұрын
Is the tuner a 'l' network?
@rcobo101
@rcobo101 7 жыл бұрын
Robert, I just posted a short video about the tuner. kzbin.info/www/bejne/Y2XYqXt-mrdpfdE
@mumi009
@mumi009 4 жыл бұрын
no radial(s) or counterpoise?
@Tommyr
@Tommyr 3 жыл бұрын
I usually run a 13' counterpoise myself.
@chanelkuini5883
@chanelkuini5883 2 жыл бұрын
Fery good
@goran586
@goran586 7 жыл бұрын
No counterpoise/radials ?? What is the actual length of wire?
@rcobo101
@rcobo101 7 жыл бұрын
The counterpoise is the external conductor of the coaxial cable that connects the radio to the tuner. The wire is 35 ft. long, and is not critical.
@redman840
@redman840 7 жыл бұрын
QTH,please? Very scenic,indeed.
@Isszarya
@Isszarya 7 жыл бұрын
This is Ham Radio cheer's
@Xantec
@Xantec 6 жыл бұрын
Im not a amateur radio operator, so can someone tell me what QRP means?
@magwhyte
@magwhyte 5 жыл бұрын
Generally, it means low power (
@usernamemykel
@usernamemykel 2 жыл бұрын
But you DO know what a computer is, and you PROBABLY have heard of "search engines", such as "Google" and "Duckduckgo", so why are you lazy?
@lewerim
@lewerim 7 жыл бұрын
How does wrapping the wire effect the antenna? I realize you're doing it to control the wire, but it must have some effect, right? I'm a fairly inexperienced ham. Just wondering. Seems like a coil...
@rcobo101
@rcobo101 7 жыл бұрын
Erik, what I have done is to wrap 35ft of wire on a 20ft pole. It becomes a normal-mode helical antenna and it less efficiency compared to a 35 ft. straight wire antenna at the lowest frequency of operation. It's a compromise, but in my opinion it works very well. Ham radio is about experimenting, I recommend you to build it and check it out by yourself, wire antennas are cheap to build and fun to use.
@lewerim
@lewerim 7 жыл бұрын
Thanks, I have some research to do on what that means (but only because knowing is half the battle :) ) I set up my end fed Packtenna Mini like that the other day (I mean the "mast" is $20, so why not experiment...) and it was pretty convenient.
@lewerim
@lewerim 7 жыл бұрын
Strange thing. I set up my packtenna mini like this the other night and couldn't load it in any band. Very high swr. Like 14:1. I'm not sure what I did differently.
@rcobo101
@rcobo101 7 жыл бұрын
Erik, for what I read the pack antenna is a 9:1 unun and in the video I am using an L-Tuner, so that is the difference. I would try adding a couple or feet of cable to your setup, in case the electric length fell in a very high impedance spot.
@lewerim
@lewerim 7 жыл бұрын
rcobo101 You are correct. It does have a 9:1 unun. I guess the thing that surprised me is that it "tuned up" fine the other day with the internal atu in my KX2. I'm sure the spacing of the turns on the rod effect the behavior, I'm just not sure how. I guess I need to research coiled radiators. When you say add some cable, do you mean coax or wire to the length of the radiator? I ask because the atu has no issues when the radiator was run straight. Thanks for the feedback. This setup is pretty convenient.
@benjaminrubenserroshernand1675
@benjaminrubenserroshernand1675 5 жыл бұрын
Gracias por la idea 73,s. XE1YCH
@guillermosempron5776
@guillermosempron5776 6 жыл бұрын
Where is the ground connection?
@rangerbud
@rangerbud 3 жыл бұрын
Is he running it without a ground plane radials....
@opencct
@opencct 7 жыл бұрын
Does not the pole and tripod get blown over? I see no guying arrangement.
@patrickwall8517
@patrickwall8517 4 жыл бұрын
That's a nice set up. De KB0CCN
@MrMesospheric
@MrMesospheric 4 жыл бұрын
Well I don't advise the tripod and mast for anything other than nil wind conditions.
@chalemi
@chalemi 5 жыл бұрын
Intriguing, but alot of information missing.
@JohnHill-qo3hb
@JohnHill-qo3hb 3 жыл бұрын
Good exercise for the grey matter would be to figure it out for one's self.
@larspregge6420
@larspregge6420 4 жыл бұрын
Nice setup and Key. 1 Part is missing, the selfbuilded trx ^^
@joewoodchuck3824
@joewoodchuck3824 Жыл бұрын
Nice, but I didn't see anything about a counterpoise.
@outlaw6595
@outlaw6595 7 жыл бұрын
So this is really nothing but an endfed, wrapped around a fiberglass pole? How clever. K4MHC
@livelongandprosper70
@livelongandprosper70 5 жыл бұрын
IKR .I think he is looking for some sort of award ..
@usernamemykel
@usernamemykel 2 жыл бұрын
DUH!
@livelongandprosper70
@livelongandprosper70 5 жыл бұрын
so you got a "perfect match" on 40m WITH a TUNER big whoops..
@leslieaustin151
@leslieaustin151 4 жыл бұрын
rob b You’ve missed the point, I think. Les
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