Re: [Discuss-gnuradio] Open Source MPT-1327 Trunk Tracking Software

[Paul J Zawada]

On Apr 5, 2004, at 7:26 AM, Ian Wraith wrote:
> > It tracks MPT-1327 trunked systems, which don't appear to be used in 
> > the USA.
>
>  There are a few MPT1327 systems in the States. It has been around 
> since
> the late 1980's here in the UK and is widely used around the globe.
> However rumour has it a certain large American company managed to keep
> it out of the US in the early days by claiming they owned the IP rights
> to certain parts of the standard.

Ian is correct..  There are pockets of MPT1327 activity in the US and 
IIRC it's really the only protocol available for doing trunking on 220 
MHz.  I believe most of the MPT1327 activity in the US is on 220 MHz.

TAIT (a New Zealand-based radio manufacturing outfit) has been trying 
to sell MPT1327 in the US for a couple of years now.  Zetron (a 
US-based radio infrastructure provider) has been also been trying to 
sell MPT1327 controllers.  However, unless the big three (Motorola, 
M/A-Com, EF Johnson) start heavily marketing MPT1327 to the US, it will 
remain a minor player here...

--zawada