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Call Sign : 26-CT-4727, M7EWO Posts : 12 Times Thanked : 1 Join date : 2022-12-22 QTH or Location : Ipswich Equipment Used : CB RADIO. 10, 6, 2, .7 meter Ham Radio
Subject: Easy Antenna adjustment Sat 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
73’s Simon CT4727
Les-1, glenn dog, Victor, Alan Pilot, karelgol, oddsnends, SangueG and like this post
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 5803 Times Thanked : 352 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: Easy Antenna adjustment Sat Aug 05, 2023 4:25 pm
Excellent stuff there Simon and an awesome first posting here at CT.
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
glenn dog and Simon467 like this post
SangueG Major contributor
Call Sign : 26-CT-3971 / 2E0LMI Posts : 1168 Times Thanked : 68 Join date : 2021-01-30 QTH or Location : Cirencester, Gloucestershire Equipment Used : Little radios, home-made antennas
Subject: Re: Easy Antenna adjustment Sat 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.
glenn dog and Simon467 like this post
Northern Crusader Major contributor
Call Sign : M0GVZ / 26CT1760 Posts : 530 Times Thanked : 35 Join date : 2019-11-13 QTH or Location : IO94SA Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike Age : 53
Subject: Re: Easy Antenna adjustment Sat 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.
Simon467 likes this post
karelgol Senior contributor
Call Sign : 19-CT-024 / PD0GOL Posts : 138 Times Thanked : 6 Join date : 2020-05-21 QTH or Location : Steenwijk, JO32bs Equipment Used : Dynascan AT5555,Yaesu FT-897, W3EDP junior, MFJ-925 Age : 65
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
Simon467 New Member
Call Sign : 26-CT-4727, M7EWO Posts : 12 Times Thanked : 1 Join date : 2022-12-22 QTH or Location : Ipswich Equipment Used : CB RADIO. 10, 6, 2, .7 meter Ham Radio
Subject: Re: Easy Antenna adjustment Thu 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
Simon467 New Member
Call Sign : 26-CT-4727, M7EWO Posts : 12 Times Thanked : 1 Join date : 2022-12-22 QTH or Location : Ipswich Equipment Used : CB RADIO. 10, 6, 2, .7 meter Ham Radio
Subject: Re: Easy Antenna adjustment Thu 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
Today at 4:10 pm by Robert Martin
Subject: Easy Antenna adjustment 
