PGPS Predicted GPS, Extended Ephemeris Solution
PSK Phase Shift Keying
PTCRB PCS Type Certification Review Board
QS Quality Sample
RF Radio Frequency
RoHS Restriction of use of certain Hazardous Substances
R&TTE Radio and Telecommunications Terminal Equipment Directive
Rx Receiver
SIM card Subscriber Identity Module card – a card that must be
inserted in any GSM-based mobile terminal. It contains
subscriber details, security information and memory for a
personal directory of numbers.
SMBus System Management Bus
SMS Short Message Service
SUPL Secure User Plane
TBF Temporary Block Flow
TDMA Time Division Multiple Access
TS Technical Specification
TTFF Time to First Fix
Tx Transmitter
U-FL Miniature coaxial RF connector for high-frequency signals up
to 6 GHz
UICC Universal Integrated Circuit Card
UIM User Identity Module
UL Underwriters Laboratories
UMTS Universal Mobile Telecommunications System
US United States
USB Universal Serial Bus
USIM UMTS Subscriber Identity Module