UK PMR 446 FREQUENCIES (AKA UHF CB)

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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby Mark5R » Mon Nov 11, 2013 1:58 pm

No I see what you mean. I would have thought a £300 scanner with a telecopic antenna would have beaten or at least equalled a £30 baofeng with short stubby antenna in the same location though but alas it doesnt.
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby SilverShadow » Mon Nov 11, 2013 2:04 pm

Yep, your Baofeng is a dedicated transciever and receiver and finely tuned on each frequency for RX and TX. A scanner is just a wide band receiver and like Alan said "a jack of all trades". Also, the antenna is measured for that band, in the case of the Baofeng the UHF band. Using a telecopic antenna fully extended also may not make it better than the Baofeng stock antenna and may even cause loss even though it's bigger as it isn't tuned to that band or extended to the correct measurement.
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby SilverShadow » Mon Nov 11, 2013 2:25 pm

Oh and picking up 446 in the 467 band on your scanners will probably be bleed over or an image because you or the people transmitting are close to the scanners. It isn't coming through on the Baofeng as that's more finely tuned.
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby Staffs Paul » Mon Nov 11, 2013 9:44 pm

You will get far better results using an outdoor antenna on your scanners :mrcool:
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby Satman17 » Wed Apr 23, 2014 8:46 pm

Ipswich shop watch now apparently digital how could I listen too it ?
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby m0lsx » Wed Apr 23, 2014 9:10 pm

What type of digital??

Edited to add SDR & software is a possible solution, but not for ALL digital transmissions.
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby T2tim » Mon Dec 07, 2015 9:28 pm

Ok ive just got a TYT UVF10 and rather confused. This Dpmr radio does have an option for 6.25khz shift in the menu. So in theory I shoud be able to get the Dpmr licence free channels almost bang on but I cant why? If I select 6.25khz the radio steps from 446.100 to 446.106 (although that makes perfect sense) and if I select 12.5khz it will step up to 446.112 but channel 1 is infact 446.103. Are we sure those Dpmr licence free channels are 6.25khz spacing? Ive also got options for 5.0khz, 10.0khz, 12.5khz, 25.khz, 50.0khz and 100khz. 6.25khz is available in digital mode on this radio too. Ok so you could probably still here activity on channel 1 on 446.106, although this radio might not have the correct vooder for that band.
Last edited by T2tim on Mon Dec 07, 2015 9:46 pm, edited 3 times in total.
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby T2tim » Mon Dec 07, 2015 9:30 pm

Strange or iam Just thick lol?
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby m0lsx » Mon Dec 07, 2015 9:58 pm

Google suggests there are two Digital PMR sets of channels, one is 6.25 with 16 channels, the other is 12.5 with 8 channels..

1 446.103125
2 446.109375
3 446.115625
4 446.121875
5 446.128125
6 446.134375
7 446.140625
8 446.146875
9 446.153125
10 446.159375
11 446.165625
12 446.171875
13 446.178125
14 446.184375
15 446.190625
16 446.196875


1 446.10625
2 446.11875
3 446.13125
4 446.14375
5 446.15625
6 446.16875
7 446.18125
8 446.19375
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Re: UK PMR 446 FREQUENCIES (AKA UHF CB)

Postby T2tim » Mon Dec 07, 2015 10:06 pm

Well I can get 446.10625 bang on no problem although like I said I cant be 100% sure this radio has the correct vocoder for that service even though it is a Dpmr radio. As far as I can tell though, the other chart that starts at 446.103 is the one used by licence free Dpmr radios in the Uk, or at least the frequencies that are progammed in by default anyway.
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