Specifications

Table Of Contents
INSTALLATION
Page 23 MRC-565 Packet Data Radio Operations and Maintenance
3.3 Detailed Specifications
The detailed specifications for each of the printed circuit board assemblies are given in Tables
2.1 through 2.4.
Table 1. MRC-565 General Specifications
CHARACTERISTIC
SPECIFICATION
Dimensions (excluding mtg braclet)
9.8”L X 4.8”W X 2.1”H
Weight
3.8 lbs.
Temperature Range
-30° to 60° C (-22° to 140° F)
Power Requirements
LPM = Low Power Mode
LPM,SP = Signal Present wake up
LPM,Alarm = DC PWR Alarm Clock wake up
LPM,PWR = No DC PWR Alarm Clock wake up
Cannot enter LPM,PWR unless TXQ empty
12 V
DC
Nominal (11-15 V
DC
)
Receiver Current
LPM,OFF 120 ma @ 13.0 VDC
LPM,SP: 80 ma @ 13.0 VDC
LPM,ALARM 65 ma @ 13.0 VDC
LPM,PWR 2 ma @ 13.0 VDC
Transmit Current
20 Amps Nominal (100 msec)
Table 2. MRC-565 Receiver Specifications
CHARACTERISTIC
SPECIFICATION
Frequency (Three models)
40-46 MHZ
+/-.0005% Synthesized 10KHz steps
Modulation: Type
Rate
Format
GMSK
9.6 kbps
NRZ
Noise Figure
< 7 dB minimum
Sensitivity: Bit Error Rate < 10
-3
at 4 kbps
-120 dBm
IF Bandwidth (3/80 dB)
13/40 KHz typical
RF Bandwidth (3 dB)
13 MHz typical
Signal Acquisition Time
< 5 msec
3
rd
Order Intercept Point
>- 15 dBm
Image Response Attenuation
> 70 dB minimum
Spurious Response Attenuation
> 70 dB minimum
SP Threshold
Adjustable from 130 to 100 dBm
Noise Blanker
> 20 dB Reduction in Impulse Noise
I/O
MRC Standard (Refer to Section 3.2)
Table 3. MRC-565 Transmitter Specifications
CHARACTERISTIC
SPECIFICATION
Frequency (Three Models)
40-46 MHZ
+/- .0005% Synthesized 5KHz steps
RF Power Output
> 10,25,50 or 100 Watts at 12-16 V
DC
Input
Load VSWR
< 2:1 Rated Power (shut down if >2:1)