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 order of installation

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karelgol
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karelgol


Call Sign : 19-CT-024 / PD0GOL
Posts : 136
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

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PostSubject: order of installation   order of installation Icon_minitimeSat Jan 08, 2022 10:52 pm

Another stupid antenna question. Should i first adjust my antenna for the lowest SWR (suppose it's resonant then) and then mount a common mode choke? Just thinking about what happened when i switched from RG58 to RG213. Then the SWR went up, i think caused by the lower loss of the RG213, which also applies to the return RF???

73
19CT024
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BigTone
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Call Sign : G8YMW or 26CT4498
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Join date : 2019-07-16
QTH or Location : Lincoln and Finningley
Equipment Used : CRT 9900, Icom 705, Kenwood TS570, Icom 910
Age : 69

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PostSubject: Re: order of installation   order of installation Icon_minitimeSun Jan 09, 2022 12:34 am

As far asĀ  SWR goes, correct on "worse" readingĀ  for the better coax.
Exactly the reason you said.
More RF reaching the aerial and less being lost on the return.
Just remember, the true SWR of the aerial hasn't altered
As for the choke, put it in at the start, common mode current may cause a false reading.

Good luck
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