On Friday, March 20, 2015 at 10:46:07 AM UTC-4, Dan Marotta wrote:
A start in the right direction for those who feel they must have
this:* http://www.aopa.org/News-and-Video/A...WT.mc_sect=tec


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Dan Marotta

UAT. Cue the usual argument. In short: skip this junk.

The other day I saw an article that indicated an approved GPS
source was being offered for $800. This is what you want to plug
into your existing Mode S transponder to get ADS-B out.
Unfortunately I can't find the article. I'm pretty sure it
was on eBrief, but there isn't a way to search their archives.
You can browse them one at a time but I'm not seeing the article now.

Matt