HAM RADIO: The Coat hanger Antenna 2m/70cm dipole.
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- เผยแพร่เมื่อ 15 ก.พ. 2021
- A really quick antenna for 2 metres and 70 centimetres, made from just 2 metal coat hangers and a small length of strip connector just add the fun.
Next time coax traps on the DX commander
I do hope you enjoy it and subscribe for more..
Many thanks
Mike - M0MSN
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I am fascinated with the RF Propagation side of all of this.... I was a TEO for a Gov agency for 35 years and we did some amazing things with Antennas that we either made or modified. Thank You.. Great Job
When I was human, together with my human friends we build coat hangers from wire scavenged from antennas.
Brilliant
And those long winter evenings simply flew by.....🤷🏻🤣😂
And we enjoyed doing so rajo
Thanks for the video! I built one last night following your measurements mounted on a flat piece wood and it attached to 1/4 pvc on a flat base as a indoor stand. I live in a apartment with very strict rules. Took me less than a hour to build and I must say wow! I can open repeaters 30-40 miles away from the second floor completely indoors and 5-7 watts from my UV-82HP. Match stays between 1.1 - 1.3 on all bands 2m/440 on my first try. I'd much rather build my antennas than buy them so much fun! Thanks for the inspiration to build again....I'm watching your indoor stealth build now, good chance I'm building one this weekend for a fellow ham in the same living situation nearby. Anyone wanting a cheap & easy to build antenna it performs much better than the Nagoya NA-771 I was using with great reports on air. Thanks from Ohio 73's KB9QDI
Pleased I could help. :)
@@mike-M0MSN definitely did, I've since made the 10m coax vertical and bought a new Ft-710! You gave me the bug 🤣. Thanks my friend, I love your builds and has given me the inspiration to build again. The 10m has made contacts 4000 + miles already during Winter Field Day. So cool!
Cheers from 🇺🇸US from being London born in 1944. I have built 2, 70 cm, and FM band broadcast ground planes using coat hangers and SO-239 connectors in the past and they
worked pretty well on those bands. Ray W2CH
Cheers and thank you, this helped me build my first antenna last night. Can’t thank you enough!
I am happy this helped you. "Vapetoven"? does this indicate that you are one that enjoys the liquids and electronic devices to make clouds?
Great video for beginners. Very well done! I built my 1/4 w for 2m and 70cm coat hanger antennas back in 1989 for the new home we moved into. I placed them in the attic and faithfully remain in service for over 34 years. Out in my summer shack, I have 2m and 70cm dipoles made from broken AM/FM telescoping antennas. They also work great. DE W9FPJ 73
Great! Now I will build my first antenna thanks to you.
This video came up when I did a google search for coat hanger antenna. Instant subscribe for getting a cup of coffee before starting the project.
I'm going to try this one. Found some friendly local hams on 2m will be great for joining the nets 👍🏻. Really enjoy your channel as a newbie foundation op. Very educational. 73's
Great video. Nick here from Portugal,, thanks for doing it, now I am going to build one😊
Love the simplicity Mike - very good
Thanks Mark
this was a very interesting project...thanks for sharing.
Very welcome
Very smart Mike - like that one!
Great video. I built antennas like this back in 1990. Placed them in my attic 32 yrs ago. They are still up there performing quite well. I did have a flat 'V' HF antenna up for 20 yrs that ran from the front end of my home to the end of the backyard, and a tornado took it out a few years ago. But it will go back up pretty soon. My lot is 50' X 70' so I am somewhat restricted to what I can afford to put up. But the is the fun in ham radio, building stuff that works. DE W9FPJ
Thanks for sharing. Cheers 73 😀
Brilliant construction antenna! for 2m & 0.70 cm
Cheers!
got to build this one, great job, thanks for sharing de VA2DXR
Metal coathangers are becoming hard to find (now we know why). Maybe they'll come back when plastics are banned.
Man cant live by radio alone IT TAKES COFFEE.! YES!
YES!
" When it inclement you do inclement things " Love it. 73s😀
Hi Mike, my first 2 m vertical antenna used 3 coat hangers with vey little cutting. 2 as a ground plane / 4 leg support and 3rd as the vertical radiator. It was an improvement on the 'rubber duck' and helped me get into the local repeater. 37 years ago now! 73 G0JLF
Heh, once built an SO239 socket and wire coathangar 1/4 w GP for 2m. Managed to work MIR on packet. Good times.
Thanks for the demo showing how easy it is to make an antenna when you're on a budget of $0.
This is great! Drill some holes at the top of the wood base and run Paracord through a tall tree👍 I'm going to build this.
this is great project . i love the most was the coffee ,don't let it become colder bro.
Thanks Mike, so clear and essy. Will be my first antenna. Great!
I'm not normal either. Cheers from Sweden and thank you
Great video again Mike 👍👍
Cheers Alan
thanks for coat hanger antenn is best
Brilliant! My compliments
Many thanks!
Très simple en effet.
Bravo from F4iwj
Going to have to give it a try as a first radio project! -M7OPO
ive build this also but for one of the long radials i used an old radio antenna on the plus site then it was so easy to get a good sdr 1,1 then isolated all with pvc and iso tape still works very well
Brillant!
Brilliant as you Brits say except for the coffee. Never put cream in your coffee. haha Thanks for great video!
I got good results with the hanger looping through just one set of terminals, anchored on the outer ones with the feeder on the inners. had to take some of the bloc casing off though. it'll save about half a penny maybe, but I was running out of blocs.
Simple and effective. Thanks for sharing :) 73s
Thanks for watching!
Built but just for 2m. Testing with the 290 tomorrow....great fun!
A cup of cold coffee and an antenna cake - works never done with Matthew and Sons lol. Great stuff and I may make one eventually Mike but I have just invested in a 450D so my horizons are definitely vertically aligned skywards :-) 73 M7BLC NB hope the wife forgives the worktop scratches ?
Perfect, thank you :)
You're welcome!
Excelente, muchas gracias por compartir sus videos, seria muy bueno habilitar para la traduccion automática al español, un abrazo desde Lima Peru.
First 2m antenna I ever made was done with coathangars. Built around an SO239 socket, 1/4w ground plane with radials. Worked well enough to hit the Mir Space Station on AX25 packet when it was still operating. That was a while ago now lol.
cool? very nice, thanks
thank you
Great stuff Mike. Just the thing for my ft290. I think its going to rain tomorrow too so guess what I'm going to build......
Fantastic
Great Video. Can you add additional elements to the same connector to cover additional frequencies? Maybe use solid copper wire, etc. due to the length.
There was me thinking you were going to drill down through the support board into the kitchen worktop!! 😀
Next time!
As a new Ham, this is fantastic and looking forward to giving it a go! Thank you for posting this build... Subscribed! -73 KQ4KIO
Awesome, thank you!
Great video Mike. I am yet to build some antennas when I manage to get a NanoVNA. Can never get my head around how these antennas work with two different lengths of elements on the same coax connection, but hey ho. Wow look at you with the nespresso. We have one but the local place that sells the pods are John Lewis I have seen the on amazon. We used the pods that came in the box and that's it since. Great quick antenna build.
Motters M7TRS 73's
Go to Nespresso direct online, next day delivery... will do a video explaining how fan dipoles work in the future.
@@mike-M0MSN Super Mike will look out for that. Keep up the great work and advice Motters M7TRS 73's
Simple answer is you can have multiple elements like this design and providing they don't conflict with each on harmonics then whichever one is resonant will take priority. I'm sure we can get Greg to do a speech on it when Macc club opens again :)
@@2e0txe hello Damian. so I guess this is some sort of radio magic and it just works. Greg drove past me the other morning when I was driving to work. Stay safe.
Motters M7TRS 73's
Thanks for the video. You are very lucky being able to work on the kitchen table! Can I ask what the spray is please? Thanks
A Cats whisker, never thought of a clothes hanger.
My wife says I need a coffee mug like yours... 😂
Nice! Great project for a rainy day. My only comment is that I’m guessing it’ll be a 1/4 wave antenna with an opposite ground rather than a dipole, since the jacket of a coax is ground rather than oscillating. Kind of like a tiger tail on an HT. A balun would make it balanced, and have the element connected to the shielding also radiate, increasing the gain. Right?
How easy was that?! Will be a bit long as the antenna starts at the coax split, so that middle spacing is also part of the radiating elements when measuring up. Now to raid the wardrobe (I assume I ignore the plastic ones 😮) 🧥 👗 👕👍🏻
That turned out awesome Mike. Its neat that you can build such a small dual band antenna for those bands.😀
Thanks 👍
@@mike-M0MSN How long does it take to get a lisence to use 2 meter and 70cm bands Mike?
We have to have 11 meter CBs in dump trucks to communicate with asphalt a nd gravel loaders and scale houses which is what got me interested in 2 way radio to start with but I don't like being limited to 11 meter. I love these smaller antennas.
Another youtuber was saying he made a 120 mile contact on 2 meter.😃
@@RC-Heli835 The exam is online now, you simply need to purchase the “foundation now” book from the RSGB or Amazon etc websites and read it. Book the exam and pass it. Please note that the license strictly forbids the use of Amateure Radio for commercial purposes. So if you need a radio for work that’s a different license.
@@mike-M0MSN Ok im looking into it thx.😀
How quick is that? I have only plastic coat hangers, I have a slight inkling that they won't work lol. Nice idea that Mike.
What size are your strip connectors? Thanks, and thanks for offering this.
Thank you for sharing. KN6FXJ, on the other side of the pond, and I'm enjoying learning about little variants on the dipoles. It's neat to see what others are doing, and I'll be making my second antenna, using the power block idea you shared.
better SWR then the HT antennas I have
Great little easy antenna. Nice work. Question mike. Have you ever used Stainless Steel wire rope? I want to put up an 80m Doublet and I need it very stealthy. With all that wire in the air I don't want it to sag.
Yes I have th-cam.com/video/ekP4I-GRSJQ/w-d-xo.html
Wow and I was just guessing when I stuck a coat hanger into the back of the cb years ago. Never for long just to make sure it tx and Rx into a handy before buying at the truck stop. 😆😜 I use the metal fence as a ground loop 😉KC3ONO
Gostei ver sua antena aqui simples muito funcional para vhf uhf
Muito Obrigado
Terrific video...thank you. Next time, would it be possible to put a towel or piece of carpet on your bench? Listening with headphones, when you dropped your tools on to the wooden bench it just about blew my ear drums. ha ha!
Yes, absolutely
Your not in the picture ..
What SWR meter is that please..
Us aliens have these sort
Of aerials.
If no one can find any kind of wire hangers at all, there is some 16 gauge multipurpose wire that you can find at a local hardware store thats pretty cheap for 50 feet, and it is awesome for this.
Great design Mike! I made one last night and it worked fantastically! I had to make two modifications in order to use the materials I had on hand: 1) I used 12 gauge solid copper wire 2) I used a bnc to banana connector. I soldered a short piece of 16 gauge speaker wire to the connecting points and the used the screw terminals on the banana plugs to connectthe other end. After tuning the performance was excellent!
BTW - What is the name of this antenna design?? I'm looking everywhere and can't find this particular design anywhere.
The name is, Coat Hanger Antena
Great demonstration and build. I'm inspired to construct such a dipole for my attic (loft). I want that coffee cup, however. Where may I find it? 73 de N5RLR. 🙂👍🏼
Very interesting, I've made something similar with with galvanised fence wire but would like to know how wide the feed point is and does it make a lot of difference if it was smaller?
No idea, give it a go.
Thanks Mike very informative. Will the coat hangers antenna handle 50 or 85 watts output from a mobile?
It should
Awesome build. Does it matter what the amperage (6/10/15/30/60) of the strip connectors are?
No as long as the cable and wire fits.
Does wire thickness matter ? I used 1.3mm wire from a hardware store as could not find metal coat hangers anywhere, I didn’t know if using 1.3mm wire mattered or not ?
The swr is good, but not necessarily the radiation. If you have a dipole for one band and then another at 3x the frequency (like 2m and 70cm) with a common feedpoint then the higher band will have a radiation pattern that is not perpendicular to the antenna and not so useful when the antenna is mounted vertically. On 70cm RF currents will flow on both dipoles because the 2m dipole is low impedance on 70cm as well. The antenna is simple to build and I'm sure it will be useful in many cases anyway.
Yep spot on Arne T and that is the whole point of the upload, to a help and to make people give it a go. :)
Going to make one of these while I wait for confirmation of my pass from RSGB. As a newly passed Foundationier - don't we need a balun on this?
nope
I'm going to the laundry😁
What brand of superglue + catalyst were you using
Interested to see what the swr would be on 70cm without the 70cm dipole legs. As a 2m dipole alone doesn't have too bad swr on 70cm.
Probably not that much different just the radiation pattern differs ( I got up to 1S point better signal on 70cm) but that could have been conditions
As an "ignorant" American I couldn't help but think this guy sounded similar to David Attenborough in the opening segment.
I tried to make this but my coax shield and terminal would not fit into the block! I sanded down the coat hanger and still did not work.
I am going to re-make it again and use a larger board and actually solder two jumper wires to an SO239 I think.
i dont have acsess to a fanct swr meter like yours so can a meter for a cb radio be used..regards
Going back to the mag loop.... its looking rather wet! Have you protected the capacitor it looks like its open to the elements there.
Yes it is, but that's a test set-up.. :)
Hey Mike I'm regularly passing the practice Technician tests.
When I get my license what radio and meters do you recommend?
Good question Answer the best you can afford.
Thanks Buddy I've Made One And Shared Your Video With A Few Pals
Can You Tell Us What Co-Ax To Use Please ?
Blessings From Birmingham England
I have used RG58 as it was a short run of around 10m, anything longer and you need to use RG213 or better.
hello sir,
can we use this antenna directly to an handheld radio?
i would really appreciate if you reply to my comments
thanks
Was your Coffee Cold ? My Dad used to like bending things straight :-) Thanks for your help re crimper. I have ordered One
Ha ha no still hot..👍😀
Going to try this, but maybe connect the co-ax before i glue it down. it might be easier to handle that way.
Good idea!
@@mike-M0MSN it worked, btw.
Hi and thanks for the video. I followed instructions very closely. It looks fine, continuity is not an issue, and I used decent materials. However, I simply cannot SWR it, constantly reading VERY high and with a AT-5555 I get an S-HI warning almost as soon as I pick up the Mic - what am I doing wrong?
This antenna is for 144-148 & 430mHz (2m & 70cm) not 27 mHz the AT-5555 is a 27mHz CB or 28mHz Ham radio....(10-11m)
Can you put much more than 20w through it Mike you reckon?
Hi Tim, yep probably around 100 watts
Mike do you like the jpole or this one best for 2 meter and 70 centimetres?
J-pole
now what if you took one of the halves and made a jpole? you could use your screw terminals to easily adjust the feedpoint
Brilliant idea, going to give that a go
I have already used this "choc-bloc" method to make a dual band j-pole. Choc-bloc is great for DIY antenna projects.
That build I would definitely like to see!
Great video Mike. Maybe a coat hanger Yagi as a thought.
Cool idea
@@mike-M0MSN I've been a great fan of coathanger antenna on 2 and 70. One trick was to solder the inner of an RCA plug on the end of a single element for 2 or 70, and then have an SO230 adaptor on the top of a handheld - the two mated perfectly, and you had a half-wave whip that would substantially outperform a rubber helical. Used to do North London to Southampton on 10w 2M SSB on an indoor dipole and across to Holland on a 5 ele yagi made from coathanger elements basically pushed through drilled bamboo. There are plenty of ghetto recipies for construction online :) Chocblock terminals to stripped back patch leads.
Did you keep the (70cm) side at 20cm instead of 17cm? update: Well i built it as you did and it works brilliantly. I didn't have to snip anything off it and can access repeaters over 27miles away.
Great to hear. :)
I just picked it up from the video, but are those dutch wooden shoes??🤣🤣🤣👍🇳🇱
Aah, no there from Brittany France. 🇫🇷
@@mike-M0MSN 73's de PD1XAN 👍
👍👏👏
How do you reckon this compares with the Flower Pot? (Apart from being smaller and simpler.)
About the same maybe 1/2 a point down...
Just got back into ham radio after about 45 years. I found this video and thought I would give it a try. I couldn't get the wires and coat hanger into my terminal block, so I soldered each side at the bend. It works really well. Tried it again with 14 AWG copper wire. I could have gotten wires in with coat hanger, but decided to solder. Does soldering this way make any difference?
Thanks for the great video. 73s Peter WB3IZU
Nice work!, any good connection works, solder, screw or weld.
Good job sir
JZ13AAP
Hello, excellent video, thank you. I am new to this, can you confirm please if 144.500 is the Image Mode centre of activity, and can it be used for Simplex without causing interference? M7BAL
Yes, correct
Amigo VHF ve UHF cm uzunlukları ne olmalı bilgilendirirseniz sevinirim
Nice simple project. I can't seem to find that strip connector. Do you have a link or another name for it I could search over here on the other side of the big water? Thanks!
Nylon Non-Fused Terminal Block
@@mike-M0MSN Thank you again.
Mike, I am a newbie and I am preparing to built something similar. Do you have any advice regarding adjusting the SWR by shortening the wires? What I mean is this: As far as I know, the 70cm and the 2m wires do not act independently, instead, they influence each other. So, is there - for example - a best practise for the order, like "first adjust he 2m part, then the 70cm part" (or vice versa)?
(If that makes sense - I am not a native English speaker)
Hi, it is always good practice to adjust the longest element first as these elements will have effect on their harmonics and in this case, the 70cm element so start long.
@@mike-M0MSN Hi Mike, thank you. This is exactly what I needed to know.🙂
Excellent video Mike! Thanks for putting it up there for us "newbies" and providing us with some no nonsense proof that these projects are doable ... we just need to get past our doubts and do it. I do have a question if you have a minute or two ... I'm currently in the process of doing something very similar; the plans call for 1/8' stainless steel rod for the two elements. My question is, would 3/16' brass rod or #2-AWG solid copper (commonly used as grounding wire for home electrical systems) be better options. Planning installing it in my attic (in case that matters). 73 Ben
You can use just about any conductive metal as long as you can connect it. :)