Instruction Manual

DESCRIPTION 2-15
MCC-545C 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-545C GENERAL SPECIFICATIONS
CHARACTERISTIC SPECIFICATION
Dimensions 10.6”L X 4.0”W X 2.42”H
Weight 3.5 lbs.
Temperature Range
-30° to 60° C (-22° to 140° F)
Power Requirements 12 V
DC
Nominal (10-14 V
DC
)
Standby: 80 ma (Continuous)
Transmit: 25 Amps Nominal (100 msec)
TABLE 2.1
MCC-545C RECEIVER SPECIFICATIONS
CHARACTERISTIC SPECIFICATION
Frequency 37-50 MHz .0005%
Synthesized 10KHz steps
Modulation: Type
Rate
Format
GMSK
9.6 kbps and 19.2 kbps
NRZ
Noise Figure < 7 db minimum
Sensitivity: Bit Error Rate < 10
-3
at 9.6
kbps
-114 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 Adjustable from –115 to –106 dbm
Triggered by DET RF and Demodulator Lock
Noise Blanker > 20 db Reduction in Impulse Noise
I/O MCC Standard (Refer to Section 3.2)
TABLE 2.2