Primarily for general aviation discussion, but other aviation topics are also welcome.
As noted previously there are now a number of shared channels used by gliding clubs for Air/Ground, and also some clubs have their own frequencies.

Anyone who regularly visits or passes near gliding sites might find the following Reference Card useful, it lists all of the clubs and their chosen frequency. Note that most clubs will be PPR and that the A/G frequency is not guaranteed to be staffed!

You can find the card here

Or by following the "Channel Reference Card" link here