I know this is probably not the best place to ask, but I also know how well informed the readership here is so I'll take a punt.
LPAT : Low Powered ADS-B Transceiver.
This has allegedly been developed by NATS.
As I understand things it is basically the ADS-B out bit of a mode S transponder, and the ADS-B in bit of a PAW.
All the in/out goodness of ADS-B without all the power hungry mode S stuff that makes a mode S transponder a non-starter for gliders and a lot of microlights, permit, vintage and SSDR aircraft.
Has anybody actually produced the LPAT for sale in the UK?
I know the FAA in the US are mandating ADS-B from 2020 using such devices, but their implementation has some differences from our situation, like weather broadcasts etc.
From a purely logical point of view (leaving out the CAA, NATS, OFCOM and all that) aren't both PAW's P3i side, and FLARM just trying to fill a niche that ADS-B / LPAT should be filling?
This is not a rant against PAW - far from it! Conceivably LPAT would be complimentary to PAW, or even integrated with it.
I accept that "we are where we are". I'm just waiting on the new P3i shield for my PAW!