SYNTHESIZED MOBILE RADIO
403-512 MHz, 25 WATT MOBILE
COMBINATION
TABLE OF CONTENTS
RF BOARD . . . . . . . . . . . . . . . . . . . . . . . . . LBI-38258
PA BOARD . . . . . . . . . . . . . . . . . . . . . . . . . LBI-31934
AUDIO BOARD . . . . . . . . . . . . . . . . . . . . . . LBI-31922
LOGIC BOARD . . . . . . . . . . . . . . . . . . . . . . . LBI-38899
SYSTEM BOARD . . . . . . . . . . . . . . . . . . . . . LBI-31924
FRONT CAP ASSEMBLY . . . . . . . . . . . . . . . . . LBI-38387
SERVICE SECTION . . . . . . . . . . . . . . . . . . . . LBI-38292
Com-Net Ericsson Critical Radio Systems, Inc.
P.O. Box 2000
Lynchburg, Virginia 24501
1-800-528-7711 (Outside USA, 804-592-7711)
Printed in U.S.A. C
O
M
B
O
Copyright© 1988-2000, Com-Net Ericsson Critical Radio Systems, Inc. All rights reserved.
TABLE OF CONTENTS
Page
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
COMBINATION NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
EQUIPMENT AND FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
AVAILABLE OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Two Channel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
16/128 Channel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
SCAN OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Receiver Scan Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
To Program Scan Channels & Select Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Using Radio With Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
PC PROGRAMMING SCAN OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
DETAILED SCAN OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
PUBLIC ADDRESS OPTION OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
TYPE 99 OPTION OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
DETAILED TYPE 99 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
MECHANICAL PARTS BREAKDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
INTERCONNECTION DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
SPECIFICATIONS
*
SYSTEM
RADIO TYPE
MVS
Frequency Range:
Transmit and Receive
403-440 MHz (Low Split)
440-470 MHz (Mid Split)
470-512 MHz (High Split)
Frequency Separation
Transmit
Full Power over entire split
Receive
20 MHz
Voltage
13.8 Vdc
±
20%
Battery Drain:
Receiver (13.8 Vdc)
Off
0.01 Amperes (maximum)
Squelched
0.65 Amperes (maximum)
Unsquelched
1.00 Amperes (maximum at 3 Watts audio)
Transmitter (13.6 Vdc)
8.0 Amperes (maximum at 25 Watts RF)
Frequency Stability
±
5ppm (
±
2.5 ppm optional)
Channel Spacing
25kHz
Frequency Capacity
2, 16, or 128 Channels
Temperature Range
-30°C (-22°F) to +60°C (+140°F)
Duty Cycle
100% Receive, 20% Transmit (EIA Duty Cycle)
Dimensions
(Less Accessories)
(Fits a DIN size dash opening)
Height
54.Smm (2.15 inches)(body)/62.Smm (2.46 inches)(nose)
Width
181.Smm (7.15 inches)
Depth
216mm (8.5 inches)
Weight
(Less Accessories)
2.04 kg (4.5 pounds)
Military Specifications
METHOD/PROCEDURES
STANDARD
MIL-STD-810-C
MIL-STD-810-D
LowPressure
High Temperature
Low Temperature
Temperature Shock
Solar Radiation
Humidity
Vibration
Shock
500.1/Procedure 1
501.1/Procedure 1,2
502. 1/Procedure 1
503.1/Procedure 1
505.1/Procedure 1
507.1/Procedure 2
514.2/Procedure 8,10
516.2/Procedure 1,2,3,5
500.2/Procedure 1
501.2/Procedure 1,2
502.2/Procedure 1,2
503.2/Procedure 1
505.2/Procedure 1
507.2/Procedure 2
514.3/Procedure 1
516.3/Procedure 1,3,4,5,6
(Contd)
LBI-31932F
1 TRANSMITTER
Power Output
25 Watts
Conducted Spurious
60 dB Below Carrier (typical)
Modulation
±
5.0 kHz (maximum)
Audio Sensitivity
40 millivolts (typical)
Audio Frequency
Characteristics (Per RS-I52B)
Within +1 to -3dB of 6 dB/octave pre-emphasis from 300
Hz to 3000 Hz per EIA standards. Post limiter filter per FCC
and EIA.
FMNoise
-50dB (typical, companion receiver method)
Power Adjust Range
12.5 to 25 watts
Distortion
2% (typical)
Deviation Symmetry
0.1kHz (typical)
RF Output Impedance
50 ohms
Carrier Attack Time
50 milliseconds (maximum)
Audio Attack Time
50 milliseconds (maximum)
RECEIVER
Audio Ampl Output
3 Watts (less than 5% distortion) EIA
(4-ohm speaker)
Sensitivity:
12 dB SINAD (EIA method)
-119 dBm (0.25 microvolts) (typical)
Selectivity
(EIA two-signal method)
-80dB +25 kHz (typical)
Spurious Response
-85dB (typical)
Intermodulation
-78dB typical (12 dB SINAD)
Hum and Noise:
Squelched
-80dB (typical)
Unsquelched
-50dB (typical)
Modulation Acceptance
±
7kHz
Frequency Response
Within +2.0 and -8dB of a standard 6 dB/octave deemphasis
curve from 300 to 3000 Hz EIA.
RF Input Impedance
50 ohms
Receiver Attack Time
40 milliseconds, typical @ 8 dB SINAD
100 milliseconds, maximum
Receiver Recovery Time
100 milliseconds, typical @ 8 dB SINAD
250 milliseconds, maximum
*Refer to the appropriate Specification Sheet for the complete specifications.
LBI-31932F
2 GENERAL DESCRIPTION
The MVS mobile radio is a synthesized, wideband radio,
utilizing microcomputer technology to provide high reliability,
high quality, and high performance in two-way, FM, mobile
communications. The MVS provides 25 watts of RF output
power across each band split (403-440 MHz, 440-470 MHz,
and 470-512 MHz) without retuning. The receiver can cover
any 20 MHz segment of each band split without retuning.
The MVS radio is easy to operate with large buttons for
function selection and an easily viewed liquid crystal display
(LCD). The control panel and the LCD are backlighted for
night operation.
All radio functions are stored in a programmable electri-
cally erasable PROM (EEPROM). Channel selection, volume
setting, scan channels, and scan on-off function are all perma-
nently remembered even when the 12V battery is disconnected.
Seven interchangeable control panels are available for up-
grading and adding options to the radio. The plug in control
panel modules can provide 2 channels, 16 or 128 channels with
scan, Type 99 decoding, and Public Address.
The radio is normally mounted in a conventional configura-
tion with the entire unit under the dash or in a DIN size open-
ing inside the dash. A remote mount option allows controlling
the main radio assembly remotely from the Front Cap Assem-
bly.
The receiver is able to scan on both noise squelch operation
and Channel Guard (tone or digital). The scan rate is fast, re-
quiring only I5ms per channel (66 channels/second). A 16
channel radio will scan the priority channels ever 90ms (11
times/sec) and the non-priority channels every 330ms (3
times/sec). The scan time will be faster when fewer channels
are programmed into the scan memory.
The microphone is equipped with a Channel Guard hook-
switch which disables Channel Guard whenever the micro-
phone is removed from its holder.
The radio is programmed using an IBM compatible per-
sonal computer equipped with a RS-232 serial interface con-
nector. A Com-Net Ericsson supplied RS-232 interface box and
cable are also required. The computer can program or repro-
gra