Does anyone know what channel any Dragnet episodes are being aired ???

I do know it's been airing on the Retro Television Network.

It did... it aired here from 4 to 5 P.M, after Emergency. I understand at the end of June RTV lost the rights to all its Universal produced series.

http://www.myretrotv.com/prog_schedules/WPSD.pdf

I Spy now takes its place, with Route 66 replacing Emergency.:(

You can watch Dragnet Weekdays at 6pm-7pm Est on AntennaTV and from 7:00pm to 8:00pm EST on Saturday on AntennaTV witch is a station simmer to Retro TV.