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 SWR which should use

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Chefsdead
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Chefsdead


Call Sign : 26-CT-3891
Posts : 65
Times Thanked : 0
Join date : 2020-11-30
QTH or Location : Doncaster
Equipment Used : CRT SS 6900N .. Yaesu ft450d
Age : 57

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PostSubject: SWR which should use   SWR which should use Icon_minitimeTue Dec 08, 2020 11:27 pm

Freq.. 26.4-850mm, 27.0-642mm, 27.185-600mm, 27.5-478mm its for a 5/8
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Northern Crusader
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Call Sign : M0GVZ / 26CT1760
Posts : 427
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Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
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PostSubject: Re: SWR which should use   SWR which should use Icon_minitimeWed Dec 09, 2020 4:21 am

I'm guessing you want to be able to use CEPT and UKFM? 


27.5 Mhz, it's smack in the middle of both. 

And by the way don't expect that measurement to be a guarantee it'll be a low SWR there. That measurement is merely a start point to get you in the ball park. There's lots of things that can affect that, including whether or not you've got a decent RF ground and are using a RF choke at the antenna. If you're not then your coax can become part of that and its length will affect the tuning.

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Alan Pilot
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Call Sign : 163-CT-220...MW7TTA
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PostSubject: Re: SWR which should use   SWR which should use Icon_minitimeWed Dec 09, 2020 7:42 am

Play around with the SWR at 27.5 to get the lowest around there.
As NC say's they length you have got there is not going to be spot on unless you are very very lucky.

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