Mike Schumann wrote:
There are obviously some challenges in getting this commercialized. The
biggest challenge is to get the FAA to accept the notion that there should
be a VFR only version of ADS-B that is designed to be cost effective, and
does not provide the accuracy and reliability levels needed for parallel
instrument approaches in Class B airspace.

My gut instinct (I don't have any experience dealing with the FAA) is that
we can get the FAA to provide a mechanism so that this type of device can be
sold commercially at a ~$1K price point. Politically, it would help a lot
of the SSA, AOPA, and the EAA took the position that universal deployment
would be acceptable, if equipment was available to the GA community at this
price point.

I sent the following comment out to various parties back in February, as
a response to a proposal by a manufacturer to build 25 of the MITRE
designed UAT transmitters for research and development purposes:

===
What if there was a highly publicized proposal by the SSA, USHPA, EAA,
AOPA, etc., to test these transmitters in a high traffic density area
with UAT ground station coverage (say Maryland or Virginia) in a range
of sport aircraft including hang gliders, ultralights, LSAs, sailplanes,
Cubs/Champs, etc.? It might encourage the FAA to address the VFR-only
issue in the near term...
===

The intent is to get the ball rolling. If you think this might be
useful, contact me, I'd like to get enough of a working group together
to insure that the proposal actually happens...

Marc