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 CB antenna/ PMR antenna compatibility question.

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stephen Gunrunner
Victor
Razz229
GaryWilson
Sharpshooter
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Wireless
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Posts : 350
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Join date : 2021-11-19
QTH or Location : Shrewsbury
Equipment Used : kit

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeMon Jun 20, 2022 11:25 am

However, for a complete CB 27MHz / PMR446 Mobile set up on a Mag Mount, try this little lot...

Your separate Radios CB & PMR446 with connectors/coax patch leads to PL-259

SO-239 Combiner

7" Mag Mount

UHF PL-259 to SO-239 Splitter

2x Right-Angle UHF Adapter

CB>

PL-259 to 3/8 Female Adapter

3ft Fibre Glass CB Whip

PMR446>

PMR446 Whip  or  the previously mentioned Diamond MC-200


The above provides the complete mobile solution of your two radios CB & PMR446 to a single Mag-Mount, that supports two Antennas CB & PMR446...

Anyone disagree?

Of course if you wish to transmit on both at the same time, and would like some protection of the front ends / finals in either radio, then I recommend swapping out the SO-239 Combiner for a Diamond MX-62M Duplexer...


Last edited by Wireless on Mon Jun 20, 2022 9:50 pm; edited 1 time in total

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antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeMon Jun 20, 2022 12:13 pm

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 20220610

Interesting...I saw an ARDF 2m Antenna last Thursday made from a tape measure, I did ask if he measured it...

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Sharpshooter
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Call Sign : 163-CT-329
Posts : 286
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Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeFri Jun 24, 2022 10:19 pm

Razz229 wrote:
Get a Sirio SU375-480 PL antenna

Cut it down for PMR, Sirio supply the instructions, then you can use the same mount.

I think this fulfils all of your requirements.


Well I held out until now but I've just ordered this antenna from knights along with an adaptor for a Baofeng. A swr/power meter for CB and I thought " sod it" 😯 and ordered a CRT space U 🤣
Didn't really need the adaptor now I've realised but only £2.95 🤣

Thanks to everyone for the feedback and other suggestions, all worth considering along the way if I get more involved and look back .

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Call Sign : 163-CT-329
Posts : 286
Times Thanked : 10
Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSat Jun 25, 2022 10:33 pm

My dilemma now having ordered a crt space U is changing the pl259 between the crt 9900. ?

I was thinking of fitting the space U between the passenger seat base and center console but I won't be able to access the back of the radio to swop leads.

Any ideas/solutions would be appreciated. Thanks.
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antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSun Jun 26, 2022 3:56 am

Antenna switch...

Antenna Switch CS-201

Have to admit that I just can't quite believe the price of these after 17 years outside the hobby, glad I kept all my old ones.

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Sharpshooter
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Call Sign : 163-CT-329
Posts : 286
Times Thanked : 10
Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSun Jun 26, 2022 10:43 am

Wireless wrote:
Antenna switch...

Antenna Switch CS-201

Have to admit that I just can't quite believe the price of these after 17 years outside the hobby, glad I kept all my old ones.


Aha, thanks wireless.
I did a Google search to no avail.
I remembered there was such a thing but
Then thought maybe I was imagining it 😁

More money 😲👍😁
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Alan Pilot
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Call Sign : 163-CT-220...MW7TTA
Posts : 1957
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Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+.
Age : 149

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSun Jun 26, 2022 10:47 am

Here you go.
https://www.amazon.co.uk/MOONKRAKER-CS201-SIGNAL-ANTENNA-SWITCH/dp/B005ERD7CC/ref=sr_1_4?crid=3SBLXCIZBWRQE&keywords=antenna+switch+so239&qid=1656236849&sprefix=atenn+sw%2Caps%2C122&sr=8-4

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Sharpshooter
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Call Sign : 163-CT-329
Posts : 286
Times Thanked : 10
Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSun Jun 26, 2022 11:30 am

Alan Pilot wrote:
Here you go.
https://www.amazon.co.uk/MOONKRAKER-CS201-SIGNAL-ANTENNA-SWITCH/dp/B005ERD7CC/ref=sr_1_4?crid=3SBLXCIZBWRQE&keywords=antenna+switch+so239&qid=1656236849&sprefix=atenn+sw%2Caps%2C122&sr=8-4


Thanks Alan, same as the one wireless posted from eBay 👍

I will not buy from Amazon ☹😉

And apologies wireless as your other previous post gave options but I missed it until now.

Thanks fellas 👍
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Sharpshooter
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Call Sign : 163-CT-329
Posts : 286
Times Thanked : 10
Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeTue Jul 05, 2022 7:44 pm

I've cut a coat hanger to 17cm. Dropped in the base it is 13.2cm from top of base.
I'll also use a sacrificial UV5R for now.

Is this correct ?




antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2026
antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2027


Oops, poor pictures, but you get my drift.
Big difference to the Nagoya's and especially the Sirio, even when that's cut down. 😮



antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2028
antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2029

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Interbond
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Posts : 2
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Join date : 2019-11-08
QTH or Location : Norway
Equipment Used : SS6900, Ham Int.Concorde 3,Pres. Lincoln 1,Pres. Jackson 1,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeWed Jul 20, 2022 12:54 am

If you had a CB and VHF combo you could use this antenna SG-CB/VHF (sirioantenne.it) Perhaps you could ask Sirio or Sigma  if they could make a combined CB and UHF antenna?
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Sharpshooter
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Call Sign : 163-CT-329
Posts : 286
Times Thanked : 10
Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeWed Jul 20, 2022 3:18 am

Interbond wrote:
If you had a CB and VHF combo you could use this antenna SG-CB/VHF (sirioantenne.it) Perhaps you could ask Sirio or Sigma  if they could make a combined CB and UHF antenna?


It's sorted now cheers.
Someone else with a  Sirio SU375-480 PL
Swapped their trimmed antenna for mine.


He also tested my coat hanger effort and it was 1-6 SWR 
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Razz229
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Call Sign : 26 CT 2290 & 26 CI 2290
Posts : 493
Times Thanked : 21
Join date : 2019-07-01
QTH or Location : Kent
Equipment Used : On 11m a Anytone 6666, Solarcon A99 vertical antenna or a Sirio 4000. On PMR a TYT TH-9800, a 1/4 wave GPA, homemade mag mount & sometimes a 8 element beam.
Age : 55

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSun Jul 31, 2022 10:22 am

Sharpshooter wrote:
I've cut a coat hanger to 17cm. Dropped in the base it is 13.2cm from top of base.
I'll also use a sacrificial UV5R for now.

Is this correct ?




antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2026
antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2027


Oops, poor pictures, but you get my drift.
Big difference to the Nagoya's and especially the Sirio, even when that's cut down. 😮



antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2028
antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Img_2029


Don't forget to take into consideration the mount as part of the antenna, as to me (others will correct me if I'm wrong) it looks to long.

Really liking what your doing, keep it mate 👍

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Call Sign : 163-CT-329
Posts : 286
Times Thanked : 10
Join date : 2022-04-05
QTH or Location : Flintshire
Equipment Used : CRT SS 9900, Ranger 2950DX, Manor Kestrel, Sirio 4000 antenna, CRT space U, Sirio SU375-480 PL antenna, UV5R's x2,

antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Empty
PostSubject: Re: CB antenna/ PMR antenna compatibility question.   antenna - CB antenna/ PMR antenna compatibility question. - Page 2 Icon_minitimeSun Jul 31, 2022 2:25 pm

Hi Razz. I gave the piece of coat hanger to the bloke who I swapped Sirio antennas with.
He tested the SWR to 1.6.
I don't need it back, or i could just cut another 👍😁

Was talking to a bloke on CB the other day and he switched his Baofeng on.
I tried mine and we made a contact from near 3 miles away, I'm high up but over the brow of a hill.
Switched the CRT space U on and that was a big improvement.

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