The construction actually looks a lot like a spray can, or beer can antenna. I built one myself and did not expect it to work at all, just to see it far surpassed a way more expensive commercially made vertical antenna on the 40m band. I used a 5l beer can for the build.

Thank you for the impressive job! My question is that you've forgot demonstrate: how did you connect the proximal end of the coil to the internal aluminium pipe, while you can not expose it or have long enough soldering iron to reach to the screw?

I forgot, Juan Carlos again, what happens if I leave the longest coaxial cable and to get to the radio room I need 14 meters, will that affect? I don't see in the calculator that I can regulate this parameter. ...73

Good afternoon, my name is Juan Carlos and I am writing to you from Santiago de Chile, I begin by thanking you for your contribution, I just saw your video and how you made the antenna, it was several years ago but I think it is ideal for me, just one question, I could see on the calculation page that I could make it longer and if the theory does not fail me, being longer than the one you manufactured would be better since it would have a longer radiant and therefore better transmission. Am I right? Many greetingss and a big hug.

fantastic job 0moet thanks 73

Hello there, I've just finished and tested the antenna. It's quite simple and cheap to do. But I think it's an antenna for "no way" situations or limited (or emergency) field operations. There's no comparison even to a simple Ribakov antenna that I currently use and runs (matched) from 80 to 6 meters. Anyway it's a good suggestion and a useful exercise. 73

Dear Paul. What is the diameter of the fibre glass fishing pole ?

can i replace aluminum tubing just with plain insulated wire 2.5mm?tie to telescopic fishing rods?i dont 1:1 balun, can i use 4-5 ferrite bead at the end of the connector to radio?

Hi Paul. I am wondering if i could use this type of Antenna for my Really restricted Space. I can only mount a Vertical on my Balkony. The Hight of the Balkony is 18m over Ground so the Vertical can be 22m over Ground and in this Hight it is 1m over the Flat Roof of the House. If i go with a 7m Fiberglass Fishing Pole with a 6,5m long 1.5mm Wire and the Coil on the Bottom, could this Work ? Can i use the Metal of the Balkony as a Radial ? The Coax Radial will be only 5m outside the Building or i lay it down on the Balkony. I cant do it anywhere else. The Metal of the Balkony is solid Ground.

Very interesting, and it seems like a nice Project, I will now look at your 2nd Video, if it's released 73's

Amazing, well built

Hi. Please tall me where is 150mm lover coil space?? you mentioned the top 3cm on the winding. The 150mm bottom is nowhere to be found. to me it does not match swr at all. so I would ask you for help. best regards 73 from Slovenia

Thank you Paul for the inspiring video. I have a short question; the Coax cable length with your design is 8 meter or so, if you were have to use a longer cable would it change anything? I can imagine a shorter cable would be a no no, but a longer?

Well done, thanks for sharing! One question: what is, and what is it for, the little black female connector (connected with the a blue wire inside the box) on the side of the box?

OM0ET, thank you much for the effort posting this video. May i know the Type and Specification of the Toroid Core you used in this video?

Hello Paul, Watching your video, I've decided to build one by myself. I've used 1.05m long 18mm in diameter aluminum pipe, 50mm diameter PVC pipe on which I've coiled 29 turns of 1.1mm enameled copper wire. Coax cable length is 8.2m. Balun is made of 2 stacked toroids (small ones, 43 mix) with 7+6 turns of RG174. All calculations have been done using Micro Vert online calculator. ISSUE: 1) I can't lower SWR below 2.5 2) Very narrow bandwidth, 30 kHz (more less as I was expecting) Do you maybe have some advice how to improve performances? Regards, 73 de YU4OWL

Nice project, congratulations :) On my side I do have a monoband hamstick for 40 so I will not build it, and meanwhile I am on a EFHW multibander project. Not the same use.

Reminds me of the Isotron antenna basically a coil with a capacitor hat.... get it up high enough l am sure it would work... not sure if there’s some cleaver physics behind this type of antenna or it’s just a 50 ohm dummy load.

Thank you Paul. I have another question that comes up in mind mind. When looking at the antenna design link you can see a capacitance value along with the inductance coil which together they resonate at the assigned frequency. I am wondering where the capacitance value is coming from. I know you are not adding a capacitor to resonate, is it the capacitance of the aluminum tubes used; length/diameter/thickness', etc...? KJ7YSW

Very nice and well made. I think you have shown me my next antenna project for my SOTA activation's. 73's Paul M0PLA

It pretty much looks like a EFHWD, with one coax leg and and the second as shortened one (coil loading)

I really want to build this but am lost when reading the instructions and using the calculator. Anyone know of where I can find more thorough directions?

super video. Anténa vypadá dobre.

This is very reminiscent of the miraculous Partridge "Joystick" antenna of the 1970s...

Nice

Many thanks for this nice video, I am really gonna try this myself.

Excellent job, Paul. Many thanks for to share this nice and interesting project. I´ll test it "on the air" with my colleagues and with my little FT-817 pack in the next Field Radio Days. 73 & DX from Franc, EA6FS - 4X4WZ

Hi paul, i would make this antenna and i have a stupid question. Hi have a couple of anodized alluminium pipes. It can be a problem for the capacity for the radiator elements? You think i must remove this anodized layer on the surface of tubes? Thanks!, IU6KVT

Hi Paul! Have you had a chance to compare this MicroVert and the Magnetic Loop? If yes, then which one has better performance? I suspect that the winner should be the ML, but it would be great to know this from one having practical experience with BOTH antennas? Do you plan to compare them in the real time? Please! De Sergey, UT8UU

What is with noise? I have big problem with noise under 14mhz on my location... S8 to S9++...

Muestren el programa de calculo de la entera micro vert

muchas gracis por la informacion sera de mucha utilidad en mis experimentos , te saluda cd3fzs

No muestran el programa de calculo para antena microver

Great !

Very nice

Excellent Paul ! look forward to a follow up video ...73 Phil 2e0udx

If i use a tuner will i be able to cover other bands with this antenna ?

THis is not a just MICRO Vertical antenna. It consist per scheme of 2 parts: First one: is 2.5 Aluminimum tube and a second one part is 8.1m of COAX and to be more exact outer braid of coax. So if put this antenna vertically it should ~11m tall. WIth same success we may just put it horizontally at the height of 0.15Lambda of working frequency above the ground and using simple RF inidicator (10-20 turns of wire on ferrite braid, HF diode + MV meter) and moving along the 8.1m part you will see different current spikes. in such scenario it would behaves as assymetric dipole. So in reality in this antenna 8.11m coax barid is main part of RF emission . It is not my idea but DL2KQ wrote about this antenna in his book part of Myth Anetnnas (Myth here is that on;y 2.5m Vertical is antenna ). I only added the way to check the statement and offered the way to work this thing efficeintly by bring it as 11m tall antenna. Have luck with this .

pdf won't download

Nice antenna,may i ask what number of toroid core?

What about radials? Doesn't it need radials?

Nice job , 73 best dx

Programa de calculo para antena microvert geurgen

Do you sell these please?

How was the testing? What is the result?

Hello dear Paul, thank you very much for this very interesting Video about your antenna project micro vert and that you share your knowlege. I think it will be my next DIY projwct. All the Best for you 73 de Ralph DB 9 FQ C 31 KM

what is the size and type of the torroid?

Excellent job - Bst73de i4oqa.

Barrie Meyer Please ring . Muriel

thank you, de YC0HLE

A plain old resonant wire dipole will be far superior.

Transmitting FM at 7 mhz is a no no

excellent video! congrats!. vy 73 fredy hb0bb

You pronouns wrong, it's heat shrink, not heat ring

Interesting video. Thanks for the info! KO4GMG

What a waste of time..26min video for aprox. 5min real interesting and informative content...so you can place 6-7 commercials. Thats not ham spirit even the good information in it. 73 also