Jean-François FOURCADIER
F4DAY

Montpellier  (France)

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© 2000-2004- J.F. Fourcadier
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high speed data television antennas microwaves repeaters miscellaneous

synoptic

 

transmitting:

 

CCIR 405-1 preemphasis is not useful and brings even "a colouring" to the noise. It is inserted only to ensure a compatibility with the ATV video signals. The de-emphasis is integrated into the satellite demodulator.

receiving:

 

 

One sees on these diagrams that the number of specific component to the data transmission is very limited.

B5+ et 73 de Jean-François Fourcadier, F4DAY

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© 2000-2004  J.F. Fourcadier F4DAY