| |
KF5JRV > TECH 25.01.17 14:25l 6 Lines 871 Bytes #999 (0) @ WW
BID : 9317_KF5JRV
Read: GUEST
Subj: Geostationary Orbit
Path: IW8PGT<CX2SA<N0KFQ<KF5JRV
Sent: 170125/1215Z 9317@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.13
All international communications relied on either short wave radio transmissions or cable links. Short wave radio was unreliable and subject to high levels of interference, and international telephone cables were exceedigly expensive. In 1945 the author Arthur C Clarke wrote a historic article in Wireless World describing a system that used satellites in geostationary orbit. Signals would be transmitted up to the satellite that would rebroadcast them back to the earth. In view of their altitude above the earth the signals would be able to be received many thousands of miles away from the original transmitting station. Clarke calculated that only three satellites would be required to cover around the globe. His idea was revolutionary, and it took many years before the technology was available for it to be implemented.
73 Scott KF5JRV
KF5JRV.#NWAR.AR.USA.NA
Read previous mail | Read next mail
| |
