Bob
April 1st 14, 07:44 PM
Hello,
Have radio monitoring as a hobby.
Sr. Citizen now, so please put up with my dumb question a bit.
A bit confused over the modes that are used for normal analog voice
communications.
If anyone could comment on these, would be most appreciative:
a. Plane to ground, and vice versa, and also plane-to-plane,
is always AM. True ?
b. Oceanic communication, MWARA etc., is always USB. True ?
c. if (a) and (b) are true, when at what point does the pilot switch
from AM to USB ? How ?
d. Tracon and Tower comms are both AM. True ?
When is FM used ?
Much thanks,
Bob
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Have radio monitoring as a hobby.
Sr. Citizen now, so please put up with my dumb question a bit.
A bit confused over the modes that are used for normal analog voice
communications.
If anyone could comment on these, would be most appreciative:
a. Plane to ground, and vice versa, and also plane-to-plane,
is always AM. True ?
b. Oceanic communication, MWARA etc., is always USB. True ?
c. if (a) and (b) are true, when at what point does the pilot switch
from AM to USB ? How ?
d. Tracon and Tower comms are both AM. True ?
When is FM used ?
Much thanks,
Bob
---
This email is free from viruses and malware because avast! Antivirus protection is active.
http://www.avast.com