Operational References; Calculate Carrier-In-Carrier Link Budget; G.5 Operational References - Comtech EF Data CDM-570A Installation And Operation Manual

70/140 mhz satellite modem; l-band satellite modem; reduced chassis depth l-band satellite modem

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CDM-570A/570AL Satellite Modem with Optional Packet Processor

Calculate change in Eb/No and verify against specification.

Example Link:

Recorded Eb/No = 2.5 dB

Change in Eb/No = 0.2 dB

Eb/No Degradation (Spec.) at 1.2 dB PSD = 0.3 dB

Modem performance is within spec

Operational References

You must follow these steps to calculate the link budget for a Carrier-in-Carrier Link: E

Calculate the link budget for both carriers in the duplex link, with required CnC margin:

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