Physics A-Level
Uplink and downlink
What Uplink and downlink means in Physics A-Level, as defined for AQA.
Definition of Uplink and downlink
Check what you remember
Read the wording for your board, then hide it and explain Uplink and downlink in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A signal is sent from an Earth station to a satellite, amplified and retransmitted on a different frequency to avoid interference.
Topics that use Uplink and downlink
- Transmission media (A-level only) (AQA A-Level)
Related terms
- Comparison of transmission media
- De-sensing
- Diffraction
- Geostationary satellites
- Metal wire
- Microwave transmission
- Optic fibre
- Refraction
Using Uplink and downlink in the exam
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