Would you like to react to this message? Create an account in a few clicks or log in to continue.
Welcome to the Charlie Tango DX Group. The home of ALL things Radio - CB, 11m DX, Amateur, PMR446, PLD, Network and Data. We welcome all radio enthusiasts of all knowledge levels. Join today and claim your own unique World Famous CT Call-sign
Join in with the fun of the Charlie Tango DX Group Winter 11m Challenge - from December 1st 2024
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
Subject: Home brew PMR Beam Wed 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 26CT451
Regards John 26CT4515
John123, GaryWilson, Razz229, Victor, SangueG, Sharpshooter and DerekF like this post
Razz229 Major contributor
Call Sign : 26 CT 2290 & 26 CI 2290 Posts : 846 Times Thanked : 30 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 : 57
Subject: Re: Home brew PMR Beam Wed 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
John123 CT Directors
Call Sign : 26CT763 Posts : 4635 Times Thanked : 166 Join date : 2019-06-27 QTH or Location : Manchester Equipment Used : Optima, Superstar 360fm, Stalker 9fdx, President Jack Age : 51
Subject: Re: Home brew PMR Beam Wed Feb 01, 2023 10:53 pm
Nice work, John.
73s John.
DerekF Senior contributor
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
Subject: Re: Home brew PMR Beam Wed 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
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 6292 Times Thanked : 389 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: Home brew PMR Beam Thu Feb 02, 2023 6:36 am
An excellent bit of homebrew there John and thanks for posting.
The second image looks like some sort of motor controller? (Bet that PP3 doesn't last long. ) Be great to see some details of your rotor assembly.
Always good to see a Yagi-Uda antenna without all the calculated 'performance' graphs!
Well done.
All the best, Victor
GaryWilson CT Directors
Call Sign : 26-CT-1836 Amateur Radio Call Sign 2E0GGQ Posts : 4505 Times Thanked : 388 Join date : 2019-06-27 QTH or Location : Redcar, North Yorkshire. Equipment Used : Radios & Wires & Stuff! Age : 60
Subject: Re: Home brew PMR Beam Thu Feb 02, 2023 7:51 am
Nice work John, well done!!
73's Gary.
John Patrick New Member
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
Subject: Re: Home brew PMR Beam Thu 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 . Cheers for now . Regards John
DerekF likes this post
John Patrick New Member
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
Subject: Update For Beam Mon 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.
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.
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.
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.
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.
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
GaryWilson, Razz229, Victor, SangueG, DerekF, Red Rooster LN-4614 and babis3g like this post
SangueG Major contributor
Call Sign : 26-CT-3971 / 2E0LMI Posts : 1340 Times Thanked : 86 Join date : 2021-01-30 QTH or Location : Cirencester, Gloucestershire Equipment Used : Little radios, home-made antennas
Subject: Re: Home brew PMR Beam Wed 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
KhannaeeM New Member
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
Subject: Re: Home brew PMR Beam Wed Feb 22, 2023 11:39 pm
Good man
RadioWavez New Member
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
Subject: Re: Home brew PMR Beam Mon Feb 27, 2023 1:31 pm
Nice antenna. Good to see your efforts, thanks for sharing!