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 Long wire not straight.

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Alan Pilot
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Alan Pilot

Call Sign : 163-CT-220...MW7TTA
Posts : 469
Times Thanked : 15
Join date : 2019-11-19
QTH or Location : Holyhead
Equipment Used : Yaesu FT-991A.

Long wire not straight. Empty
PostSubject: Long wire not straight.   Long wire not straight. Icon_minitimeTue Dec 08, 2020 10:14 am

Wanting to put a longer long wire up but have a small garden
At the moment i have a 10m length running almost North to South and it works well.
Wanting to put a 20m length up but it would only go like a reversed 7 but the extra would be running almost East to West.
Would this work would it be ok.
Thanks in advanced.
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43CT016
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Call Sign : 43-CT-016
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Join date : 2019-11-17
QTH or Location : Perth
Equipment Used : iCom IC-7610/IC-9700

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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitimeTue Dec 08, 2020 11:32 am

I have found nothing beats more wire in the air.

I was running a shortened (23m-ish), loaded, 80-10EFHW and in addition to 80m bandwidth being non-existent, I wasn't really happy with my signal reports or incoming signals.  Keeping everything else the same, I changed to 40m of wire for a full length one, dog-legged at 90 degrees at the end of the garden, and everything improved dramatically.

glenn dog likes this post

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Alan Pilot
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Alan Pilot

Call Sign : 163-CT-220...MW7TTA
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Equipment Used : Yaesu FT-991A.

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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitimeTue Dec 08, 2020 1:33 pm

Thanks for the reply.
What i was bothered about was the shape it would have to go like a 7 backwards.
Don't know if it would be firing at each other if you get what i mean.
Not into making aerials but hope to succeed lol.
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Northern Crusader
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Call Sign : M0GVZ / 26CT1760
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Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitimeWed Dec 09, 2020 4:32 am

Learn how to model antennas in software like EZNEC or one of the free versions and do azimuth and elevation plots modelling it over simulated real ground. It'll give you an idea of how it should perform and you can then build it and compare.
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Alan Pilot
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Alan Pilot

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Join date : 2019-11-19
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Equipment Used : Yaesu FT-991A.

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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitimeWed Dec 09, 2020 7:35 am

Northern Crusader wrote:
Learn how to model antennas in software like EZNEC or one of the free versions and do azimuth and elevation plots modelling it over simulated real ground. It'll give you an idea of how it should perform and you can then build it and compare.
If i had the garden size i would try to experiment but i haven't.
Also i am disabled so that put's a limit on what i can do.
I think i will just try it but it can only go one way and that would give it the reversed 7 so no 90 degree more like 80 or 75.
Plus to old to start learning new software the gray cell's don't absorb much anymore.
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43CT016
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43CT016

Call Sign : 43-CT-016
Posts : 122
Times Thanked : 7
Join date : 2019-11-17
QTH or Location : Perth
Equipment Used : iCom IC-7610/IC-9700

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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitimeWed Dec 09, 2020 7:47 am

How much can you get down the length of the garden before you need to bend it?

There are plenty of completed models out there for the EFHW, for example, and you could grab those and the software used and simply change the wire orientation....BUT remember with a multi-band antenna, the [pattern changes per band, as the effective height above ground changes relative to wavelength.

A good place to start reading is here.....but personally, for the cost of the 20m of wire you're talking about, I'd grab a mate you can get some signal reports off on your favorite band, where you're not always a 59, put the new one up, and try it again...that's what I did.

https://www.qsl.net/kk4obi/EFHW%20Straight.html

https://forums.qrz.com/index.php?threads/efhw-antennas-radiation-patterns-vs-frequency.692671/

I appreciate a disability is going to make this more of a PITA than for some of us, but that's why we have mates!  Very Happy
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Alan Pilot
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Alan Pilot

Call Sign : 163-CT-220...MW7TTA
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Join date : 2019-11-19
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Equipment Used : Yaesu FT-991A.

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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitimeFri Dec 11, 2020 12:37 pm

Still on the 10m long bit of wire but it IS working.
Just had a qso with ke55ee in Pensacola Florida on the 20m band.
Do i need to double the length lol might try it but will save the old 10 meter length.
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PostSubject: Re: Long wire not straight.   Long wire not straight. Icon_minitime

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