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antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Icon_minitimeToday at 7:27 pm by SangueG

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 Help needed - Mobile CB set up, I can not reduce SWR below 2.5.

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Alan Pilot
peewee norfolk
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26CT1074
Juast Jack
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peewee norfolk
Senior contributor
Senior contributor
peewee norfolk


Call Sign : 26-CT-4879 / M7PCA
Posts : 159
Times Thanked : 7
Join date : 2023-07-16
QTH or Location : North Walsham, JO02QU
Equipment Used : binatone 5*,alinco dx10 135,sirio4000,silver rod,G5RV,beofeng 17 pro max, X30 duel 2m/70cm,full size G5RV, TS120v,soon ft991a !!!!!
Age : 56

antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Empty
PostSubject: Re: Help needed - Mobile CB set up, I can not reduce SWR below 2.5.    antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Icon_minitimeTue Oct 24, 2023 7:56 pm

well if it helps my siro never cam off once..... and hit a few tree braches and low bridges with being high top but never came off and also i never stuck to the errrrrr 60mph cant belive i said that and yep never came off even with all them horses running at full gallop, the top was a bit errrrr bent and twisted had to make good before mini install lol.....highly recomend them think it was Alan that said about them first, had DV27`s, firse sticks etc inthe past but best one so far, now set up for 2m as got my licence now, you can get he whips from moonraker and other well known shops,internet etc and wild places i live in norfolk there is even grass growing in middle of most roads i go on lol.......

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Coyote
Contributor
Contributor



Call Sign : 2-CT-216
Posts : 51
Times Thanked : 1
Join date : 2022-01-25
QTH or Location : Palmdale California
Equipment Used : Base RCI 2950 Mirage, Mirage M75 Amatuer Bi-Linear Amplifier,with a Antron 99 base station antenna, Mobile radio Cobra 29 LTD Classic and Wilson 1000 Mag Mount Antenna, Marko F100 Amplifier.

antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Empty
PostSubject: Mobile antenna to short.   antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Icon_minitimeFri Oct 27, 2023 6:54 pm

Just a suggestion.

Add a 6 inch steel spring between the mount and the antenna, check to see if there is a grounding strap from the body of the vehicle to the frame and to the engine block, if it's not grounded to both then add grounding straps , both the spring and the ground straps should lower your SWR, most of the newer vehicles aren't properly grounded. (Body- Frame-Engine Block)

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ChrisB
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ChrisB


Call Sign : 153-CT-003
Posts : 2
Times Thanked : 0
Join date : 2023-09-18
QTH or Location : Pattaya.
Equipment Used : DX5000 Plus

antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Empty
PostSubject: Re: Help needed - Mobile CB set up, I can not reduce SWR below 2.5.    antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Icon_minitimeSat Oct 28, 2023 6:38 am

Hey OM
A long time ago I bought a mobile antenna with the same problem. An OM had looked at it and said briefly that the soldering points on the coil looked cold. Off to the soldering station, the two soldering points on the coil were replaced and then my SWR was perfect. 73+55

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antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Empty
PostSubject: Re: Help needed - Mobile CB set up, I can not reduce SWR below 2.5.    antenna - Help needed - Mobile CB set up, I can not reduce SWR below 2.5.  - Page 2 Icon_minitime

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