UK PMR 446 FREQUENCIES (AKA UHF CB)

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

Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby G4RMT » Tue Dec 08, 2015 11:20 am

it's not just digital, it's simply that that the published centre frequencies are offset from the .000 starting point other services use. with analogue it rarely matters, because few radios are really narrow band or extra narrow band (6.25KHz), so my Yaesu cannot get exactly on the same frequency as the Motorolas some of the guys here have, but they work fine. Not so good for dPMR because of the two carriers, one above and the other below - which are very tightly spaced.

I suspect it stems from a 'cure' for out of band transmissions. In the Amateur band, for example 144-146 - if you dial in 146.000 and transmit, you are out of band. Same thing on the Coastguard's channel 0 - when they use it, they are not in the Marine band any longer. I think by offsetting the channels, it contains the users within the band limits. Messes up any cover anything radio though.
G4RMT
 
Posts: 1019
Joined: Sat Feb 07, 2015 5:45 pm

Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby T2tim » Tue Dec 08, 2015 5:25 pm

well its proved one thing as far iam concerned, just because you may have the correct channel spacing it doesnt nececessarily mean you are going to be bang on the channel frequency. Iam glad I found out with the TYT rather than the Zastone, because at least the TYT is usefull for 2m being dual band. of course I may still pick something up on 446.100, because its only slightly off, but that remains to be seen. all assuming of course, its used in my area which iam not sure about. I know what you mean about your Yaesu though, my VX5 and VX7 only have 5khz shift with no 6.25khz. that also seems the case with most new HTs too.
T2tim
 
Posts: 69
Joined: Sat Sep 12, 2015 1:48 am

Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby taffy866 » Mon Jul 11, 2016 2:11 pm

Just ordered a Baofang uv-5R 136-174 400-520 radio are there any interesting frequencies in the South wales area ,mainly Monmouthsire .
Any frequencies would be a good start and happy for info as new to this type of radio.
many thanks
:thumbup:
taffy866
 
Posts: 2
Joined: Tue Mar 29, 2016 1:31 pm

Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby m0lsx » Mon Jul 11, 2016 2:30 pm

taffy866 wrote:Just ordered a Baofang uv-5R 136-174 400-520 radio are there any interesting frequencies in the South wales area ,mainly Monmouthsire .
Any frequencies would be a good start and happy for info as new to this type of radio.
many thanks
:thumbup:


A UV-5R is a transceiver, (transmitter & receiver) not a scanner (fast scanning receiver.) Which means unless you have a licence you cannot legally use it, not even on 446 licence free frequencies, as the 5R is not a legal licence free radio.
Having said the above, you will probably not have any issues using it on 446, providing you do not upset anyone.
Beyond 446, it's use is not advised, unless you either have a licence or only enter receive frequencies & the 5R does not make a good scanner as it is way to slow for more than a few channels. As most users have quick chats & you will miss more than you hear with such a slow scan.
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5229
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby taffy866 » Sun Jul 17, 2016 7:40 pm

ok thanks,
so what radio do you suggest i buy ,mainly for listening on please ?
taffy866
 
Posts: 2
Joined: Tue Mar 29, 2016 1:31 pm

Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby m0lsx » Sun Jul 17, 2016 9:46 pm

taffy866 wrote:ok thanks,
so what radio do you suggest i buy ,mainly for listening on please ?


What frequencies will it be used for transmitting on??
What sort of budget do you have?
What do you want to listen to?
Do you want a hand held radio that can be used any where or a homebase?
Buy a database from Kimmy JS19 via http://ukscanningdirectory.co.uk/
Or do Google search of this forum via https://www.google.com/cse/home?cx=partner-pub-6291336405621919:2662881632
73 De Alan (M0LSX.)
http://www.qrz.com/db/M0LSX"
User avatar
m0lsx
 
Posts: 5229
Joined: Wed Nov 21, 2012 9:14 pm
Location: Norwich. TG21.

Previous

Return to The TX'ers Forum

Who is online

Users browsing this forum: No registered users and 1 guest