But of course don't forget that all the ATC over the ocean communications is SSB.
----- Original Message ----- From: "Mahlon Haunschild" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, October 06, 2004 7:05 AM Subject: [AMRadio] Re: SpaceShip One uses AM > Fun fact: All aviation voice communications is AM, albeit VHF. > SpaceShip One isn't unique. > > It's AM because the blocking effect that FM exhibits is considered > unacceptable. With AM, if two stations interfere you can usually hear > both signals to some degree through the heterodyne. With FM, one > station would block the other. The flight safety boffins wouldn't like > that. > > SSB of course would be too labor-intensive for aviation service. > > regards, > > Mahlon - K4OQ
