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Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Fri Feb 01, 2019 7:03 pm
by JohnUK
Does anyone know what or who uses the 410MHz tetra frequencies such as 410.3000, 410.4875 and 411.2625? Are they arquiva commercial or tetra airwave?

They seem to tx all the time but in a pulsing kind of way and not constant?

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Sat Feb 02, 2019 8:41 am
by Minus1
Sounds like stuff I've found at 411.9125 and 421.9125 and a few adjacent channels.

There is some TETRA stuff used on oil rigs way out in the North Sea, so i wonder if any of those off the North West coast may be a possibility?

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Mon Feb 04, 2019 9:08 pm
by Alfie
Has anyone heard any tetra between 870-876 MHz and 915-921 MHz ?

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Tue Feb 05, 2019 3:45 pm
by Davie Boy
Alfie wrote:the 440 to about 444MHz band 440-444MHz
unencrypted tetra reported here

Clear Tetra in use here by Nottingham Trams... they use the following frequencies...

Nottingham Trams Tetra...

Site 1
440.0500
440.4000

Site 2
440.1500
440.5000

Site 3
440.2500
440.6250

Site 4
440.7500
441.0750

Site 5
441.1500
441.5000

Site 6
441.2500
441.6750

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Tue Feb 05, 2019 9:33 pm
by Neil57uk
Are you monitoring NET on the scanner?

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Thu Feb 07, 2019 2:36 am
by Alfie
Neil57uk wrote:Are you monitoring NET on the scanner?

Not sure what you mean by net ? is that question to me or davey boy or to people who know about net (which i dont) ??

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Thu Feb 07, 2019 9:07 am
by Metradio
I think NET might be the Nottingham Express Transit tram system.

Mike

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Thu Feb 07, 2019 9:26 pm
by Mark5R
Metradio wrote:I think NET might be the Nottingham Express Transit tram system.

Mike


Yes thats what he means
https://en.wikipedia.org/wiki/Nottingha ... ss_Transit

Alfie wrote:Has anyone heard any tetra between 870-876 MHz and 915-921 MHz ?

No but I googled and it seems it is a frequency range it can be used in UK and EU. I do get a Tetra TX in that area, I always thought it was a mirror from the 380-400Mhz area? I just had a scan now on a Realistic scanner and found nowt but I think it was the Yaesu I found it on in the shack so will have a scan on that tomorrow and report back :thumbup:

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Fri Feb 08, 2019 12:25 am
by Neil57uk
Apologies but as you implied that you were in Nottingham I assumed that you would know the name of the tram network in your city. The Civil Tetra freqs were published some years ago and have been monitored my some via downloaded software but simply wondered if the upgraded scanner decoded transmissions.

Re: Tetra trunking TMO & DMO now available on AOR AR-DV1

PostPosted: Fri Feb 08, 2019 3:33 pm
by Alfie
Neil57uk wrote:Apologies but as you implied that you were in Nottingham I assumed that you would know the name of the tram network in your city.

I never implied that at all which is why i asked was the question to me or davey boy. i just wanted to know what you meant by NET to try and answer your question. i am in the city btw which means london. davey boy is in nottingham :rolleyes: