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 Homemade PMR 446 mobile antenna

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AuthorMessage
Razz229
Senior contributor
Senior contributor
Razz229

Call Sign : 26 CT 2290 & 26 CI 2290
Posts : 159
Times Thanked : 4
Join date : 2019-07-01
QTH or Location : Edenbridge, Kent
Equipment Used : On 11m CRE 8900, K-PO NM-532 Power Mic, Turner JM+2\U Power Mic, Moonraker 1/2 wave GPA antenna, Sirio 4000. On PMR a TYT TH-9000D, a 1/4 wave GPA, homemade mag mount & sometimes a 8 element beam.
Age : 53

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PostSubject: Homemade PMR 446 mobile antenna   Mobile - Homemade PMR 446 mobile antenna Icon_minitimeWed Oct 02, 2019 11:33 pm

Hi all

I'm looking for some pointers on making a mobile antenna for PMR 446.
I've got the mag mount and cable but what length should i make the whip.
Should i make it a quarter, half, three quarter, five eighth or full wave?

Ray
CT2290/CI2290
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BigTone
Contributor
Contributor


Call Sign : G8YMW or 26CT4498
Posts : 81
Times Thanked : 17
Join date : 2019-07-16
QTH or Location : Lincoln and Finningley
Equipment Used : CRT 9900, Yaesu FT817, Kenwood TS570, Icom 910
Age : 66

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PostSubject: Re: Homemade PMR 446 mobile antenna   Mobile - Homemade PMR 446 mobile antenna Icon_minitimeThu Oct 03, 2019 11:21 pm

The easiest is 1/4 wave, about 6 inches long. No coils, caps or matching.
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BigTone
Contributor
Contributor


Call Sign : G8YMW or 26CT4498
Posts : 81
Times Thanked : 17
Join date : 2019-07-16
QTH or Location : Lincoln and Finningley
Equipment Used : CRT 9900, Yaesu FT817, Kenwood TS570, Icom 910
Age : 66

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PostSubject: Re: Homemade PMR 446 mobile antenna   Mobile - Homemade PMR 446 mobile antenna Icon_minitimeThu Oct 03, 2019 11:33 pm

Ray, how about a bought aerial, 1/2 over 1/4 wave, £13
http://kcb.co.uk/contents/en-uk/p2037_Sirio_SU_375-480PL__(375-480mHz).html
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Razz229
Senior contributor
Senior contributor
Razz229

Call Sign : 26 CT 2290 & 26 CI 2290
Posts : 159
Times Thanked : 4
Join date : 2019-07-01
QTH or Location : Edenbridge, Kent
Equipment Used : On 11m CRE 8900, K-PO NM-532 Power Mic, Turner JM+2\U Power Mic, Moonraker 1/2 wave GPA antenna, Sirio 4000. On PMR a TYT TH-9000D, a 1/4 wave GPA, homemade mag mount & sometimes a 8 element beam.
Age : 53

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PostSubject: Re: Homemade PMR 446 mobile antenna   Mobile - Homemade PMR 446 mobile antenna Icon_minitimeSat Oct 05, 2019 1:12 pm

Hi BigTone

That Sirio looks the part, and if i can't build something out of the bits n bobs i've got then i will go down the buying route.

Cheers

Ray
CI2290/CT2290
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gravedigger911
New Member
New Member
gravedigger911

Call Sign : 26-CT-3161
Posts : 21
Times Thanked : 1
Join date : 2019-07-04
QTH or Location : West Yorkshire
Equipment Used : Stryker SR955 HP . Uniden Uniace 300 . TS 6M. Pres Himalaya...2x Uniden Scanners . 2x AOR Recievers 2x AOR

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PostSubject: Re: Homemade PMR 446 mobile antenna   Mobile - Homemade PMR 446 mobile antenna Icon_minitimeMon Oct 07, 2019 12:18 am

Theres some really Small 9 cm ones on Ebag , from China of Course about £12 complete with Mag Mount , by all Accounts got good feedback, type in 2M 440 Mobile Ant
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