cb and pmr

Forum for CB, PMR, Ham, Business users, GMRS, Repeaters and all other TX Chat

cb and pmr

Postby mickydt » Mon Apr 02, 2018 1:40 pm

so after 30 years i have now just got another cb only a handheld which i am looking to upgrade to a high gain aerial and also have opted for pmr with lpd channels, the advantage is that my aerial should be okay for using with pmr as it also transmits but will get a swr to make sure i don't blow the radio.
supporting those with sickness and disabilities https://socialhub.forumotion.co.uk/
User avatar
mickydt
 
Posts: 126
Joined: Thu Aug 01, 2013 10:15 am

Re: cb and pmr

Postby G4RMT » Mon Apr 02, 2018 3:52 pm

You got a CB> as in 27MHz, and a PMR446> as in 446MHz? LPD devices work in the 433MHz band - so I have no idea what you have?

They certainly won't let you share aerials - as they're totally different. A proper PMR446 won't let you connect an external antenna anyway, only the illegal ones will do that, and the few LPD radios that are available have very low power, and again no antenna connection. What are you hoping to do?
G4RMT
 
Posts: 1238
Joined: Sat Feb 07, 2015 5:45 pm

Re: cb and pmr

Postby m0lsx » Mon Apr 02, 2018 6:15 pm

mickydt wrote: I have now just got another cb only a handheld which i am looking to upgrade to a high gain aerial


Ignore the allegations on advertising for CB antennas when it comes to so called gain. No base fed vertical CB antenna is ever going to have any meaningful gain over any other base fed antenna, other than via the angle of radiation. As some antennas radiate power more efficiently at the horizon & less at the sky. What most antenna manufacturers are referring to when they talk about gain is either a blatant lie or an alledged gain over an imaginary antenna.
If you want gain, then you will need a beam.
But what you can do is simply use a better antenna than the small telescopic antenna that CB's come with. Or if using it pedestrian portable, then use a tail, which is a length of wire under a screw into the chassis. The tail acts as a counterpoise & in effect gives the RF some grip, allowing it to make a more efficient jump out of your antenna.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://cse.google.com/cse/publicurl?cx=017721449704518888595:wswa65nq4ww
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5699
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: cb and pmr

Postby stanogs68 » Mon Apr 02, 2018 6:29 pm

jesus that was a bad choice to get back into the hobby ,the cb is really qiet now days ,you should of got a home base or a put it in your car !
stanogs68
 
Posts: 263
Joined: Sat Jan 25, 2014 5:31 pm

Re: cb and pmr

Postby mickydt » Mon Apr 02, 2018 7:15 pm

nobody said i was sharing aerials if you read my post correctly and yes there are people on cb in my area.

the pmr is going to be used for something else.

boy what bad taste posts.
supporting those with sickness and disabilities https://socialhub.forumotion.co.uk/
User avatar
mickydt
 
Posts: 126
Joined: Thu Aug 01, 2013 10:15 am

Re: cb and pmr

Postby G4RMT » Mon Apr 02, 2018 8:14 pm

Hang on! You said this
i have now just got another cb only a handheld which i am looking to upgrade to a high gain aerial and also have opted for pmr with lpd channels, the advantage is that my aerial should be okay for using with pmr as it also transmits but will get a swr to make sure i don't blow the radio.

You talk about CB and PMR and then say aerial (as in one) - to me, you have two radios and one aerial. If you don't explain properly, how is it my fault I misunderstood? So one responder thought you wanted a CB aerial with gain, I thought you wanted to share them - especially as you mentioned VSWR and 'blowing things up'.

As I said - if you buy a POMR446 radio the radio antenna is fixed.

By the way, bad taste is when you buy a pink car, or hang pictures of nude women in the local vicars house.

Let's start again - do you want a CB antenna or a PMR446 antenna, or a LPD antenna (forgetting two of these are illegal)
G4RMT
 
Posts: 1238
Joined: Sat Feb 07, 2015 5:45 pm

Re: cb and pmr

Postby m0lsx » Tue Apr 03, 2018 8:30 am

stanogs68 wrote:jesus that was a bad choice to get back into the hobby ,the cb is really qiet now days ,you should of got a home base or a put it in your car !


CB use like any other form of radio varies from area to area & CB's like most radios are 12 volt, so with a power supply can be used in the home or in a car.
Last edited by m0lsx on Tue Apr 03, 2018 9:25 am, edited 1 time in total.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://cse.google.com/cse/publicurl?cx=017721449704518888595:wswa65nq4ww
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5699
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: cb and pmr

Postby m0lsx » Tue Apr 03, 2018 8:33 am

mickydt wrote:nobody said i was sharing aerials if you read my post correctly.


That is what I read your post as meaning, but as that point had already been addressed, I did not repeat the good advice given re using a CB antenna on PMR 446.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://cse.google.com/cse/publicurl?cx=017721449704518888595:wswa65nq4ww
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5699
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: cb and pmr

Postby Mrwoosh » Mon May 21, 2018 6:16 pm

From my findings a fantastic antenna for pmr is a Watson w2000 not the diamond v2000 or any other 2000 copies lol , great tuning up past 433 onwards and also down on vhf , cb wise best out the box antenna was the gain master on 10 and 11m


Before I get slammed I’ve bought and made lots of antennas and imo those are the 2 I’d recommend out the box and not super bankruptcy prices , remember height is power and location is key also invest in decent coax cable especially the higher the frequency you use ,
Mrwoosh
 
Posts: 7
Joined: Sun May 20, 2018 4:40 am


Return to The TX'ers Forum

Who is online

Users browsing this forum: No registered users and 0 guests