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 Home brew PMR Beam

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Victor
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John Patrick
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John Patrick


Call Sign : 26-CT-4515
Posts : 42
Times Thanked : 10
Join date : 2022-05-11
QTH or Location : Brighton
Equipment Used : Baofeng UV5R - Midland 2001- President Mc Kinley & President Randy III, GT-3TP
Age : 54

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PostSubject: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeWed Feb 01, 2023 9:40 pm

Hi Everyone 
I was asked to put up couple of pics for my Home brew antenna with a rotor . I use this for the Southern & South east PPMR Net held by Ray 26CT2290/ 26CI2290 .
Hope this help's any question please ask .

Cheers John 26CT451Home brew PMR Beam Img_2610
Home brew PMR Beam 2e225d10

Regards John 26CT4515

John123, GaryWilson, Razz229, Victor, SangueG, Sharpshooter and DerekF like this post

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Razz229
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Major contributor
Razz229


Call Sign : 26 CT 2290 & 26 CI 2290
Posts : 768
Times Thanked : 28
Join date : 2019-07-01
QTH or Location : Kent
Equipment Used : On 11m a Anytone 6666, Solarcon A99 vertical antenna or a Sirio 4000. On PMR a CRT Space U, a 1/4 wave GPA, homemade mag mount & sometimes a 8 element beam.
Age : 56

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeWed Feb 01, 2023 10:13 pm

Love the way it's leaning over at slight angle 😄, but, that does seem to make all the difference listening to the radio/signal reports and distance you get even when on the 5 watt handy.

What did you make it with, cut down coat hangers from the charity shop?

73

Ray 2290
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John123
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John123


Call Sign : 26CT763
Posts : 4195
Times Thanked : 148
Join date : 2019-06-27
QTH or Location : Manchester
Equipment Used : Optima, Superstar 360fm, Stalker 9fdx, President Jack
Age : 50

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeWed Feb 01, 2023 10:53 pm

Nice work, John.👍👍👍

73s John.
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DerekF
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Call Sign : 26-CT-4631....M7OGB
Posts : 104
Times Thanked : 5
Join date : 2022-09-09
QTH or Location : Middlesbrough, North Yorkshire
Equipment Used : Icom F25SR, Intaride IR-803, Baofeng UV-5R, Anytone AT-778UV
Age : 71

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeWed Feb 01, 2023 11:09 pm

Hi John

Antenna looks great.

Is it possible you could provide some dimensions? Length of rods and also the rod spacing?

73
Derek
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Victor
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Call Sign : 26-CT-3228 / M7VIC
Posts : 5809
Times Thanked : 352
Join date : 2019-11-10
QTH or Location : Bedford
Equipment Used : Various

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeThu Feb 02, 2023 6:36 am

An excellent bit of homebrew there John and thanks for posting. Home brew PMR Beam 1f44d 

The second image looks like some sort of motor controller? (Bet that PP3 doesn't last long. Wink ) Be great to see some details of your rotor assembly. 

Always good to see a Yagi-Uda antenna without all the calculated 'performance' graphs! Very Happy


Well done.

All the best,
Victor
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https://www.qrz.com/db/M7VIC
GaryWilson
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GaryWilson


Call Sign : 26-CT-1836 Ham 2E0GGQ
Posts : 4266
Times Thanked : 368
Join date : 2019-06-27
QTH or Location : Redcar, North Yorkshire.
Equipment Used : Radios & Wires & Stuff!
Age : 59

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeThu Feb 02, 2023 7:51 am

Nice work John, well done!!

73's Gary.
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John Patrick
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John Patrick


Call Sign : 26-CT-4515
Posts : 42
Times Thanked : 10
Join date : 2022-05-11
QTH or Location : Brighton
Equipment Used : Baofeng UV5R - Midland 2001- President Mc Kinley & President Randy III, GT-3TP
Age : 54

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeThu Feb 09, 2023 6:52 pm

Hi. Guys 
Sorry its been awhile I been a little busy. I will put up some more pics and details over the weekend as how I put it together. I did use a yogi calculator  but I will let you know how ,where and when  . Rolling EyesRolling EyesRolling Eyes
Cheers for now .
Regards John

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John Patrick
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John Patrick


Call Sign : 26-CT-4515
Posts : 42
Times Thanked : 10
Join date : 2022-05-11
QTH or Location : Brighton
Equipment Used : Baofeng UV5R - Midland 2001- President Mc Kinley & President Randy III, GT-3TP
Age : 54

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PostSubject: Update For Beam   Home brew PMR Beam Icon_minitimeMon Feb 13, 2023 5:21 pm

Hello Everyone.

As promised I have some more info on the PMR Beam.I will try and keep it short. lol!

List of Parts and Pics.

1. Motor controller.
2. Motor and flange plate. 
3. length of 21.5mm over flow & 25mm round conduit  with a couple of pipe joiners and tee shape joiners for 25mm pipe , plus 4mm steel rod  from B&Q.
4. large choc block for driving element.
5. Coax and plug & any 2 core wire to connect to motor , i  used speaker wire.

Amazon links .

1. Motor Controller. https://www.amazon.co.uk/gp/product/B09HT2MDJW/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1 
2. Motor.                https://www.amazon.co.uk/gp/product/B0741TC9JB/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
3. Motor flange.      https://www.amazon.co.uk/gp/product/B07PFWCTL2/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1

I used a Yagi Uda calculator  for sizes of elements and spacing etc.which is ,

https://www.changpuak.ch/electronics/yagi_uda_antenna_DL6WU.php just enter frequency etc and bingo all sizes etc ready for you.

The top view with inners of the choc block holding the driving elements.

Home brew PMR Beam Img_2611


The under side with the 21.5mm smaller pipe inside the 25mm so it can twist freely with a couple of pipe joiners and tee in middle so it can sit on the motor spindle.

Home brew PMR Beam Img_2612

Motor with the smaller 21.5mm section of pipe fixed to the flange, I used a bit of timber rounded to fit in the 21.5mm glued and screwed.

Home brew PMR Beam Img_2613

This all parts lined up and slide into each other. It just works great with the pipe joiners etc they all just fit right. I did put some grease on the section on flange for smooth opperation.
Home brew PMR Beam Img_2614

Well i hope this helps out any one and if you need more info or help just ask. I could always build you one if needed.

Hope to catch you on air sometime soon. 

Regards John 26CT4515

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SangueG
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SangueG


Call Sign : 26-CT-3971 / 2E0LMI
Posts : 1198
Times Thanked : 72
Join date : 2021-01-30
QTH or Location : Cirencester, Gloucestershire
Equipment Used : Little radios, home-made antennas

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeWed Feb 15, 2023 7:41 am

Thanks John for the excellent presentation of the construction of the very low cost beam and rotor. Very inspirational.

John Patrick likes this post

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https://station-master.online/2E0LMI
KhannaeeM
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KhannaeeM


Call Sign : 108-CT-357
Posts : 25
Times Thanked : 1
Join date : 2023-02-03
QTH or Location : Glasgow
Equipment Used : Rotel 240-Superstar 2000-Maxcom 4E

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeWed Feb 22, 2023 11:39 pm

Good man😁
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RadioWavez
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Call Sign : 2-CT-210
Posts : 45
Times Thanked : 7
Join date : 2022-01-01
QTH or Location : Lexington, Kentucky
Equipment Used : Alinco DX-SR8

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PostSubject: Re: Home brew PMR Beam   Home brew PMR Beam Icon_minitimeMon Feb 27, 2023 1:31 pm

Nice antenna. Good to see your efforts, thanks for sharing!
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