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 Easy Antenna adjustment

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5 posters
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Simon467
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Simon467


Call Sign : 26-CT-4727, M7EWO
Posts : 11
Times Thanked : 1
Join date : 2022-12-22
QTH or Location : Ipswich
Equipment Used : CB RADIO. 10, 6, 2, .7 meter Ham Radio

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PostSubject: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeSat Aug 05, 2023 3:45 pm

Hey Guys, my first post

I put this together as an easy way to get the correct antenna length. I hang this from trees, house, caravan etc.

Use of a couple of elastic hook bungees and some plastic electric fence tensioners. Hang it up and adjust to the right length, I’ve put 5 cm markings along my wires, then fine tune for swr.
My max length is for about 26Mhz which can be wound in for the whole band
antenna - Easy Antenna adjustment  Img_5214
antenna - Easy Antenna adjustment  Img_5215

73’s Simon
CT4727

Les-1, glenn dog, Victor, Alan Pilot, karelgol, oddsnends, SangueG and like this post

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Victor
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Victor


Call Sign : 26-CT-3228 / M7VIC
Posts : 5696
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Join date : 2019-11-10
QTH or Location : Bedford
Equipment Used : Various

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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeSat Aug 05, 2023 4:25 pm

Excellent stuff there Simon and an awesome first posting here at CT. antenna - Easy Antenna adjustment  1f44d 

Little handy tips like these make what I call brilliant 'top pocket' ideas where you squirrel away such information in the old noggin and recall them later when needed.

Being able to 'wind' in or out to resonance/low SWR with such a setup is a great idea.

Thanks for sharing and posting up.


All the best,
Victor

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https://www.qrz.com/db/M7VIC
SangueG
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SangueG


Call Sign : 26-CT-3971 / 2E0LMI
Posts : 1109
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Join date : 2021-01-30
QTH or Location : Cirencester, Gloucestershire
Equipment Used : Little radios, home-made antennas

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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeSat Aug 05, 2023 6:54 pm

Hi Simon. Thanks for sharing. A nice and simple but very practical idea that I am sure others here could utilize.

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https://station-master.online/2E0LMI
Northern Crusader
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Call Sign : M0GVZ / 26CT1760
Posts : 526
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Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 53

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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeSat Aug 05, 2023 8:18 pm

Bloody genius right there. Top marks Simon. 

I've got two farm suppliers in my town so I'll have a look tomorrow for a couple.

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karelgol
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karelgol


Call Sign : 19-CT-024 / PD0GOL
Posts : 126
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QTH or Location : Steenwijk, JO32bs
Equipment Used : Dynascan AT5555,Yaesu FT-897, President Bill Asc, KL-200P, T2LT, ATAS-120
Age : 65

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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeTue Aug 08, 2023 8:36 pm

Somewhere i've read that making an end loop in your wire antenna is a bad idea, can't remember where and why. Something about making a spool at the end?? But if it works, it works. Haven't seen plastic fence tensioners here in The Netherlands, just metal, but will try to locate them. The idea is just to good to ignore.

Karel
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Simon467
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Simon467


Call Sign : 26-CT-4727, M7EWO
Posts : 11
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Join date : 2022-12-22
QTH or Location : Ipswich
Equipment Used : CB RADIO. 10, 6, 2, .7 meter Ham Radio

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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeThu Aug 10, 2023 12:04 am

karelgol wrote:
Somewhere i've read that making an end loop in your wire antenna is a bad idea, can't remember where and why. Something about making a spool at the end?? But if it works, it works. Haven't seen plastic fence tensioners here in The Netherlands, just metal, but will try to locate them. The idea is just to good to ignore.

Karel
Thanks Karelgol, the way I read it during my amateur radio lessons was that it’s ok to coil at the ends but not in the middle, the measured length will be slightly different than the maths, just keep the dipoles equal
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Simon467
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Simon467


Call Sign : 26-CT-4727, M7EWO
Posts : 11
Times Thanked : 1
Join date : 2022-12-22
QTH or Location : Ipswich
Equipment Used : CB RADIO. 10, 6, 2, .7 meter Ham Radio

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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitimeThu Aug 10, 2023 12:35 am

Northern Crusader wrote:
Bloody genius right there. Top marks Simon. 

I've got two farm suppliers in my town so I'll have a look tomorrow for a couple.
These are cheap and unthread when you release the tension so be careful, they do the job though:
https://www.ebay.co.uk/itm/323957616180?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=mLtSYuGbSIW&sssrc=4429486&ssuid=&var=&widget_ver=artemis&media=COPY
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PostSubject: Re: Easy Antenna adjustment    antenna - Easy Antenna adjustment  Icon_minitime

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