Q
- QPSK (Quadrature Phase Shift Keying)
R
- RANDOM
S
- SDR (Software Defined Radio)
- SFN (Single Frequency Network)
- Socket (software)
- STI (Service Transport Interface)
- STL (Studio Transmitter Link)
- Symbols
T
- TCP (Transport Control Protocol)
- TII (Transmitter Identification Information)
- Transmission Frame (DAB Mode-I)
- UEP (Unequal Error Protection)