Operations Manual

DESCRIPTION 2-8
O&M of the MCC-545B PACKET DATA RADIO
12/2000
conformal-coated with an acrylic encapsulate that contains a tropicalizing, anti-fungal agent to
increase durability and provide increased protection against moisture and contamination.
Specifications for the unit and the individual circuit boards are given in Tables 2.1 through 2.4.
MCC-545B GENERAL SPECIFICATIONS
CHARACTERISTIC SPECIFICATION
Dimensions 10.6”L X 4.0”W X 2.42”H
Weight 2.7 kg (3 lbs.)
Temperature Range
-30° to 60° C (-22° to 140° F)
Power Requirements Standby: 100 ma (Continuous)
Transmit: 25 Amps Nominal (100 msec)
12 VDC Nominal (10-14 VDC)
TABLE 2.1
MCC-545B RECEIVER SPECIFICATIONS
CHARACTERISTIC SPECIFICATION
Frequency 37-50 MHz .0005% Synthesized 10KHz
steps
Modulation
Type
Rate
Format
BPSK
4 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 >- 4 dBm
Image Response Attenuation > 70 dB minimum
Spurious Response Attenuation > 70 dB minimum
SP Threshold Adj. From –115 to –106 dBm
Triggered by DET RF and Demodulator Lock
Noise Blanker > 20 dB Reduction in Impulse Noise
I/O MCC Standard
TABLE 2.2