A video: https://archive.org/details/0436_Radar_Secrets_01_20_16_00 Also here is a book: https://archive.org/details/AircraftRadioEquipment Wayne WB5WSV -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/arc5/attachments/20160915/c17dfabc/attachment.html>