CB antenna/ PMR antenna compatibility question.

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...

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

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 .

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.

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.

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

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

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

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 ?








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

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?

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 

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 ?








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

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

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.