User's Manual

RF Unit
CHARACTERISTICS
Code: D168X01_DDS06
Date: 09/10/08 Page: 4 of 5
01.01.00/1 Rev.1
1. RF UNIT TECHNICAL CHARACTERISTICS
Functional characteristics:
 Frequency bands: 380-400, 410-430, 450-470, 764-806, 806-870 MHz.
 Transmit offset frequency: -30 MHz for 764-806 MHz band; 45 MHz for 806-870
MHz band; any for other frequency bands.
 Channel spacing: 6.25KHz, 12.5Khz or 25KHz.
 Frequency Division Multiple Access (FDMA): 1 physical channel per carrier.
 Modulation: Analog FM / C4FM.
 Emissions Designator:
 WB analog: 16K0F3E.
 NB analog: 11K0F3E.
 Digital: 8K10F1W.
 Data bit rate: 9.6 Kbits/s.
 Ethernet interface: IEEE 802.3u,x.
 RF Unit is hot swap as a unit, but individual modules (RPS, RPA P25, RTX P25,
RRX P25, BSYNC, RCPU P25) are not.
Electrical characteristics:
 Nominal voltage: 26,4Vdc (21.1 – 31.7 Vdc).
 Consumption: 500 W maximum.
 Transmitter:
 RF Output Power: 100 Watt (+50dBm). Adjustable in 2dB steps.
 Transmitter Frequency Range: 380 - 400, 410 - 430, 450 - 470, 764 - 776,
851 - 870 MHz.
 Frequency Accuracy: ±0.1 ppm.
 Spurious Emissions: < -70 dBc.
 Adjacent Channel Power (ACP) Ratio: > 67dB.
 Inter-modulation attenuation: > 40dB.
 Modulation Limiting (Analog):
 25KHz Channels  ±5KHz
 12.5KHz Channels  ±2.5KHz
 Modulation Fidelity (Digital): < 5% (Class A).
 Receiver:
 Receiver Frequency Range: 380 - 400, 410 - 430, 450 - 470, 764 - 776, 806 -
825 MHz.
 Sensitivity: -119dBm (0.25uV) (Class A).
 Faded Sensitivity: < -108dBm (Class A).
 Selectivity:
 25KHz Channels  > 75dB (Class A).
 12.5KHz Channels  > 60dB (Class A).
 Co-Channel Rejection: > 9dB.
 Spurious response rejection: > 75dB.
 Intermodulation response rejection: >75dB.
 Unwanted conducted emissions: < -57dBm.