Тёмный
No video :(

HF Mini-Beam - Created by G4ZU. Self-Build or adapt for your own use | Ham Radio 

watersstanton
Подписаться 30 тыс.
Просмотров 25 тыс.
50% 1

Possibly the most famous Ham Radio HF Mini-Beam ever conceived. A 65-year-old design that seems to have been forgotten by many! Peter G3OJV, takes you through the concept and highlights some ideas that you might want to incorporate in a self-build design. Although protected by Patent, you are permitted to build your own version of the G4ZU design for personal use.

Опубликовано:

 

27 авг 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 30   
@dieselbushcraft1299
@dieselbushcraft1299 11 месяцев назад
Interesting ideas with this antenna. It caught my attention as my father built a 2 ele mini beam when I was a child. It had some loading coils on the ends of the elements with some spikes around the coils and remember him describing them as inductors. Never seen the design since and of course it’s too late now to be able to ask him about the antenna. Good memories of my father and his radio equipment, still got some bits of equipment he made.
@watersstanton
@watersstanton 11 месяцев назад
That antenna was also known as the Minibeam and was manufactured as a kit and marketed in the USA. Our company imported back in the early 1970s. Same namebut ver different design.
@elwood.downey
@elwood.downey 10 месяцев назад
Great idea to use a stub to short a trap when it's not wanted, I will add that to my bag of antenna tricks for sure. Thanks for this and for sharing a bit of its history.
@davidhaywood9071
@davidhaywood9071 2 месяца назад
Thanks for the update on LU5FR using the antenna. He does have some information about it on his site but it's in Spanish and unfortunately, I don't speak any Spanish.
@WECB640
@WECB640 11 месяцев назад
Exceptional. I had not seen this one. Many thanks Peter! 73
@watersstanton
@watersstanton 11 месяцев назад
Glad you enjoyed it 73 Peter
@kennyc3984
@kennyc3984 11 месяцев назад
Hi Peter ....it's Ken EA5/G4VZV. Thanks for an informative video which i fully understood. This would be an easy anyenna to make for sure.Always interesting to watch your videos. Thanks Peter ....de G4VZV
@VA7AYG
@VA7AYG 11 месяцев назад
Appreciate your knowledge and your effort to share with us. Many including myself lack some basics. Would love to see a series that you go through basics of HAM radio as you discovered yourself. Keep up the good work and 73 VA7AYG
@jest.s50si83
@jest.s50si83 3 месяца назад
THANKE YOU🙏from S50SI
@davem0udb
@davem0udb 11 месяцев назад
Thanks Peter, another interesting concept, perhaps by linear loading it could be shortened some more.
@l.a.2646
@l.a.2646 11 месяцев назад
That's a good idea! I just built a linear loaded 40 meter dipole and it can fit almost any garden or yard.
@macbenac777
@macbenac777 5 месяцев назад
G4ZU was a génius for the antenna, thank's for survival it. F4GMS
@W9HJBill
@W9HJBill 11 месяцев назад
65 years and the patent is still valid? I thought patents only lasted 20 years? I'm surprised no one has made a commercial version of this.
@MrGohunter
@MrGohunter 11 месяцев назад
Patents can be renewed.
@W9HJBill
@W9HJBill 11 месяцев назад
@@MrGohunter Even in the UK, while they can be renewed, they only last for a maximum of 20 years. Initially a UK patent lasts for only 5 years, but it can be renewed for a maximum of 20 years, just like in the US. Unlike the US, you have to keep paying for a renewal, but they BOTH end at 20 years. www.gov.uk/patent-your-invention
@ehayes5217
@ehayes5217 11 месяцев назад
While very informative & interesting, for me at least, the most "enlightening" point in ur video was just the thought of using an open-wire feeder for a directional antenna (not necessarily just for a doublet)! Yes, a very simple concept, but still, something I'd never considered until now, (thanks to u)! de WA4ELW in TN 🇺🇸😀
@watersstanton
@watersstanton 11 месяцев назад
Thanks for sharing! Nice to hear from you across the Pond.
@jamesgeorge1709
@jamesgeorge1709 11 месяцев назад
It would be nice if someone could come up with complete plans for this antenna😅
@stephenburke8841
@stephenburke8841 11 месяцев назад
Really interesting, open feeder on a yagi .
@watersstanton
@watersstanton 11 месяцев назад
Very!
@gulfy09
@gulfy09 11 месяцев назад
My real question is/ are we transmitting over flat ground or over a sphere.. when we talk in skip conditions
@GordonHudson
@GordonHudson 11 месяцев назад
Peter, I have a crazy aerial story for you. There is a Russian YL who has done videos on here of her operating with aerials lying on the ground or buried. I had put it down to "crazy Russian pranksters", but I was having my lunch a few days ago and gave it a go. I cut 6m of wire, attached it to a 9:1 unun, added about four feet of coax and pushed it out the window. I laid the wire over the slabs and grass. Antenna analyser was showing under 3:1 from 10-30 MHz but a big dip right in the 12m band. So I plugged it straight into the radio, went on FT8 and could see stuff. Clicked on the first CQ and it was a JA8. He gave me a -18 report. Weak, but we made the contact. How is this possible? The noise floor was really low too. I was only running 10w. More experimentation required. I can see this ending up in the RAOTA magazine at some point. I am bemused by this experience. GM4SVM
@watersstanton
@watersstanton 11 месяцев назад
Hi, yes I did see the videos. It is certainly worth investigating. be interesting to try and ascertain the losses and also the angle of radiation. Not easy, but it is an ideal ham radio project. 73 Peter
@GordonHudson
@GordonHudson 11 месяцев назад
@@watersstanton Its amazing that after 42 years I am still finding things like this. Going to investigate it and might write it up.
@richardmoran4476
@richardmoran4476 11 месяцев назад
Pretty interesting. Have you, or are you familiar with anyone who has, built one and measured the actual gain on the various bands? That would certainly settle any argument about how different the performance is from a "true" full size yagi, and whether it performs similarly to a 5-el beam on 10m
@OJ71081
@OJ71081 6 месяцев назад
Do you have any links to webpages with a good diagram of the antenna Peter? I've looked on LU5FR's webpage but the text is in Spanish and the diagrams are a scan from a very old book and are not very clear. Would be really helpful if you did. I think this might actually be a beam for 20/15/10m that could fit in my little garden. 73s
@watersstanton
@watersstanton 6 месяцев назад
Unfortunately I could not find any more detailed information. The design goes back a long time and all the original data seems to have been lost. Sorry.
@lloydtrotter4057
@lloydtrotter4057 11 месяцев назад
It's ok you can say it...... it will also cover the 11m band also. There are many of us out here. We also like your videos. Sorry
@Olorinii
@Olorinii 11 месяцев назад
Comment for the algorithm.
Далее
My 5-Band Attic Antenna for Ham Radio
17:02
Просмотров 24 тыс.
I Took a LUNCHBAR OFF A Poster 🤯 #shorts
00:17
Просмотров 6 млн
what will you choose? #tiktok
00:14
Просмотров 4,6 млн
20M Mini-Beam DIY Project - Part 3 (Final)
12:58
Просмотров 4,1 тыс.
ICOM IC-7760 hamfair 2024
1:38
Просмотров 5 тыс.
Top 10 Wire Antennas for HF Ham Radio
16:23
Просмотров 45 тыс.
Easy Build: 20m Half-Wave Rotatable Dipole Antenna
14:34
Tiny NoodleTenna for HF Limited Spaces
12:58
Просмотров 38 тыс.
Northey Island Activation
6:58
Просмотров 191
I Took a LUNCHBAR OFF A Poster 🤯 #shorts
00:17
Просмотров 6 млн