Radio Shack TRC521 CB - Manual (Page 14)

14
SPECIFICATIONS
RECEIVER
Frequency Response (1 kHz, 0 dB Reference)
Lower, at 450 Hz ................................................................... –3 dB
Upper, at 2500 Hz ................................................................. –3 dB
Intermediate Frequency
First IF ......................................................................... 10.695 MHz
Second IF .......................................................................... 455 kHz
Maximum Sensitivity ............................................................... 1 µ V
Sensitivity for 10 dB S/N ........................................... 1 µ V or better
AGC Figure of Merit
50 mV for 10 dB Change in Audio Output ............................. 90 dB
Overload AGC Characteristics (from 50 mV to 1000 mV) ....... 4 dB
Adjacent Channel Selectivity ................................................. 55 dB
Image Rejection ................................... Typically better than 60 dB
IF Rejection ............................................................. 65 dB or better
Maximum Audio Output Power .......................... 4 Watts at 8 ohms
Squelch Range .............................. Adjustable from 0.5 µ V to 1 mV
Receive Battery Drain ..................................... 280 mA to 1500 mA
(from No Signal to Maximum Output)
TRANSMITTER
Frequency Tolerance ...................................................... ±0.0005%
Maximum Output Power ........ 4 Watts (maximum allowed by FCC)
Spurious Emission ................................................. –65 dB or better
Transmit Battery Drain .................................. 1270 mA to 1870 mA
(from No Modulation to 80% Modulation Limit)
Modulation Frequency Response (1 kHz, 0 dB Reference):
Lower, at 450 Hz ................................................................... –3 dB
Upper, at 2.5 kHz .................................................................. –3 dB
Modulation Type and Capacity .................................... A3 and 85%
Microphone Sensitivity ........................... 5 mV for 50% Modulation
GENERAL
Channels ..................................................................................... 40
Frequency Range ................................ 26.965 MHz to 27.405 MHz
Frequency Control ....................... Phase-Locked Loop Synthesizer
Operating Temperature Range ............................... –22°F to 122°F
Power Requirements ........................... 13.8V DC (12–16 volts DC,
Negative Ground)
Input Power ............................................. 7.5 W (Reference Value)
Antenna ............................................. 50 Ohm (Coaxial Connector)
Microphone .......................................................... Condenser Type