New UK Police Tetra Airwave Radio's

[MarkMck1994]

Eh... this video is inaccurate. "Scotland" alone has around 13 Forces, who's to say they are all on Motarola? Strathclyde are on Airwaves!

[JillmanVideo]

Nokia sold their entire Tetra line to EADS and all

new terminals were rebranded to EADS Tetra.

EADS later changed name to Cassidian.

[alexcraig1]

all police channels are encrypted nowadays, as far as I know the ambulance service are going to be as well.

[JasonDolan]

all TETRA radios look like cheap ugly Nokia phones. I don't like them.

[ollybgm]

dam shame Tetra my scanner got loads of dust on it now an can only pick up airports miss moblie calls and the police.Spent many nights hearing car chases some even right pass my house.Can pick up online feeds from all over the world but not the uk

[neostar999]

can you send me one thanx .....lol

[88forlive]

can someone get me a nokia THR8801? PM mee pleas!!

[ebayaddict19]

@88forlive even if you got one you cant just switch it on and listen to the police

[88forlive]

@ebayaddict19 no sh*t sherlock

[MM6Logan]

What was the point in this video?

[bben95]

not very useful content, even worse music

[bben95]

@tetramoo obviously a chav?

[MatthewLee90]

dude can i know the title of the song?

[radionerdz]

@MatthewLee90

I Need You - N-Dubz

[AdrianMX6]

@tafftastic P25 is crap. Just ask the New Zealand pigs in Lower Hutt, if you can get hold of them on their shiny new P25 radio network that is. Tetra is still a better and reliable system any day. How is P25 more advanced, its just a different and emerging but buggy standard. As P25 advances so does TETRA

[tafftastic]

@AdrianMX6 P25 is very, very far from being crap. There's a reason why it's used by more emergency service/govt agencies globally than any other digital PMR standard. The poor RF coverage during the trial phase in Lower Hutt has nothing whatsoever to do with the air interface protocol, it was purely down to patchy RF coverage. And I'd be keen to see any source you have backing up your claim that Tetra is more reliable than P25, especially in dense, urban areas or mountainous terrain.

[AdrianMX6]

@tafftastic right back at you. In case you failed to notice the terrain around the Hutt is mountainous, so no system will really be any good. More repeaters, more coverage, that's how RF works.

Any source you put up for P25 can just as easily be countered with reliable info for TETRA, which is a tried, tested and proven technology. Wellington airport, Hutt council, security companies as well as the a bus company have all just switched over to TETRA, there are others but I cant remember who.

[tafftastic]

@AdrianMX6 Yup, I agree with your first statement, which is what I said earlier. But to say that you are able to counter any claim that Tetra is as good as P25 in dense urban areas or mountainous terrain is something I'd love to see.

In the Tetra AI standard ETS 300-392 we had to specify 3 terminal types in order to handle multipath interference from TDMA time slots falling out of sync when bouncing off buildings etc. Something an FDMA technology, such as P25, Tetrapol etc, don't suffer from.

[AdrianMX6]

@tafftastic P25 handsets price around $2000 - $3000, TETRA handsets no more than $1000 and smaller. P25 will improve its current spectrum efficiency in using

TDMA to support two time slots in a 12.5kHz channel –but P25

systems must still be able to support FDMA transmissions [dual

mode transmission sites] termed dynamic dual mode operation. FDMA 1 channel/12.5 KHz and 6.25 KHz version “on paper”. TETRA is double the spectral efficiency of P25 at 6.25 KHz in practice. Need more space....

[tafftastic]

@AdrianMX6 ill put you in touch with a company who sells P25 terminals for under $1k. Unless you want end to end encryption. Secondly you're using single cell spectrum efficiency to compare the efficiency of Tetra and P25. The cell re-use pattern of Tetra is around 10, while P25s is 15+. So yes, for small systems Tetra offers better spectrum efficiency, but for larger networks P25 is better. This is why Tetra is banned from bein used in the U.S, because of poor efficiency in large cities etc

[Jorgen87]

@tafftastic Can you send me pm about radios?

[AdrianMX6]

@tafftastic Tetra is banned in US cities because P25 is a US designed system whereas TETRA is a EU designed system. That's just the US protecting its own market. TETRA is globally available in more countries than P25. The company I work for has its own TETRA network and looked at the P25 option as well but the TETRA system met with our needs. I can put you in contact with our sales guys if you keen as our TETRA service is selling like hot cakes

[tafftastic]

@AdrianMX6 The FCC banned the use of any new 25 khz radio systems, irrespective of where the standard was initially developed, and they had a major issue with Tetra and co-channel interference issues.

The people I represent dont like Tetra, they need standardised end to end encryption for one, minimal infrastructure and several other things. And they're not American. Most P25 networks never appear on marketing material, due to the kind of customers who use it. I sold Tetra for nearly 10 years.

[hamstersized]

MT800 also used by norfolk constabulary

[urbex2007]

The network still can't cope with data or conversations between users, it's so bad that encryption doesn't even work yet so isn't used. Not a very good system really.

It stops people with a scanner from listening, but you just buy a radio and stick it in test mode if you're that sad.

[MotorolaRadio]

@urbex2007

It's not true. No easy way to listen TETRA, because you don't know group and not part of this group on system controller.