User's Manual
Table Of Contents
- About This Manual
- System Description
- Mobile Equipment System
- Repeater System
- Base Station
- System Installation and Checkout
- User Interface
- Acronyms
- Radio Module Specifications
- General Description
- Functional Specifications
- FCC Items
- Channel Definitions
- Power and Distance
- Photographs
- DSSS Channels and Regulations
- EL Antenna Pattern
- AZ Antenna Pattern
Appendix B — Radio Module Specifications B-3
March 2001
Dynamic Range (TX power − receiver sensitivity) 122.87 dB
Transmit Spectral Mask (at 1
st
side-lobe) −30 dBr
TX & RX Data Rates Using DBPSK 1 Mb/s
TX & RX Data Rates Using DQPSK
a
2 Mb/s
Chipping Code (currently is a 802.11 compatible Barker) 11 chips
Key-up (synchronization − must be at DBPSK data rate) 128 bits (& µs)
Maximum Packet Size
b
1024 bytes
Output Power Resolution (8-bit DAC) 128 steps
Channels 12 —
Channel Separation
c
5 MHz
IF Frequency 280 MHz
LO VCO Frequency (= 2 × IF) 560 MHz
a. Default operation will be DQPSK.
b. The 128-bit synchronization header is not counted.
c. Channels start at 2412 MHz and increment in 5-MHz steps (802.11 style).
Table B.2 Radio RF Performance and Operation (Continued)
Specification Typical Unit
Table B.3 Radio Physical Specifications
Specification Typical Unit
Overall Module Size (L × W × H) 8.7 × 6.5 × 13.5 inches
Overall Weight 3.5 pounds
Backplate (structural foam using Valox FV649) 0.75 pounds
Cover (Valox 357) 1.53 pounds
PCB Dimensions (W × H) 6.5 X 9.6 inches
PCB Construction – 0.093" FR4 6 layer —
Operational Temperature Range −30 to +60 Celsius