PMR 446 radios

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PMR 446 radios

Postby mrfixit » Sun Sep 07, 2014 11:19 pm

Hi i have a friend who owns some binatone terrain 750 radios , im not sure of the frequencies for the channels on them ,he uses channel 22 sub channel 2 on them when we use them for motorcycle road races when we marshal ,i have recently bought a baofeng uv5r handheld and scanning for my friends radios i cant find the frequency he is using ,its mainly for listening in but is it possible to programme my radio so i can tx and rx his radios , i know there is a power issue with pmr radios but we have trees and hills between us most of the time so it may take a bit of extra power to make a connection ,if anyone can help me i would be greatful
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Re: PMR 446 radios

Postby 2E0UCW » Mon Sep 08, 2014 7:38 am

I've not been able to locate frequency data in regards to the Binatone radios - you could try using the PMR446 frequencies but then the Binatones may be also using a CTCSS tone - check with your friend if there is any info in the box (or on the box).

However in regards to the power issue which you seem to be aware of, it's not just a matter of you needing extra power to make the distance, PMR446 frequencies (which are the ones that the Binatones should be using as license free radios) are limited to 0.5w (for the purpose of close range communication with minimal interferance) and the Baofeng UV-5R pushes out 1w at the lowest setting (and 4w/5w on the high setting) and the extra power you may be using may run over other legitimate users so be careful.

PMR446
Channel 1 - 446.00625
Channel 2 - 446.01875
Channel 3 - 446.03125
Channel 4 - 446.04375
Channel 5 - 446.05625
Channel 6 - 446.06875
Channel 7 - 446.08125
Channel 8 - 446.09375
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Re: PMR 446 radios

Postby mrfixit » Mon Sep 08, 2014 2:34 pm

ok no worries ,thanks for the reply anyhow , will check with my mate if he set ctcs or if there is any info on radios or box they came in
thanks again for reply
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Re: PMR 446 radios

Postby 2E0UCW » Mon Sep 08, 2014 3:56 pm

Here's a link to the manual - http://www.exteradirect.co.uk/download/ ... _Guide.pdf
Here's a link to the Baofeng manual - http://uv3r.com/images/UV-5R%20user%20manual.pdf

The Binatone display shows a code and channel - the channel is from 1-8 representing the 8x PMR446 frequencies I listed earlier. The codes represent either 38x CTCSS tones or 83 DCS codes giving a total combination of 121 per PMR446 frequency - the screen should show if it's using CTCSS or DCS. There is no data on the internet to advise what each code number represents. The Baofeng has 50x CTCSS tones and 105x DCS codes giving a slightly bigger variation than the Binatone.

So the best idea I can think of is to set the Baofeng at PMR channel 1 (446.00625) and the lowest CTCSS code available in the settings. Then set the Binatone to channel one and code one and test. If no luck, go up the codes and see if one works.
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Re: PMR 446 radios

Postby andygoole » Mon Sep 08, 2014 8:51 pm

The Baofeng has a CTCSS search/scan facility, but will only find the tone when the PMR446 is transmitting
See the link for John Miklors site
http://www.miklor.com/uv5r/UV5R-ToneScan.php
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Re: PMR 446 radios

Postby mrfixit » Tue Sep 09, 2014 3:28 am

thanks guys i will try these and see how it goes
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