Description; Options And Accessories; Programmable Features - Ericsson Monogram Series MGP 450 Maintenance Manual

Monogram series 450-512 mhz portable radio
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LBI-38861C
Spurious emissions
Conducted
Radiated
Adjacent Channel Noise Power
Audio Frequency Response
Audio Distortion
Modulation Limiting
Microphone Sensitivity
FM Hum and Noise (Unsquelched)
Carrier Attack Time
RECEIVER
Sensitivity
Modulation Acceptance Bandwidth
Adjacent Channel Signal Selectivity
Spurious Response Rejection
Squelch Blocking
Intermodulation Rejection
Maximum Audio Power Output
AF Distortion
Frequency Response
Hum and Noise (Unsquelched)
Conducted Spurious Emission
Operational Bandwidth
* These specifications are intended primarily for use during servicing. Refer to the appropriate Specification Sheet
for complete specifications.
2
-60 dBc maximum
-60 dBc maximum
-70 dB
+1, -4-5 dB 300-3000 Hz
< 5%
5 kHz 300-3000 Hz
> 90 dB S.P.L.
< 45 dB
< 100 ms
12 dB SINAD: 0.25 µV (TYPICAL)
20 dB: 0.5 µV
7.0 kHz
-70 dB
-70 dBc
> 5 kHz
> 70 db
0.5 W
< 5.0%
-2, +8 dB 1000 Hz reference
6 dB/octave de-emphasized 300 Hz - 3000 Hz.
45 dB
-53 dBm
7 MHz (3 dB)

DESCRIPTION

The MONOGRAM Series Personal radio is small, light-
weight, yet ruggedly constructed two way FM radio operating
on the 450-470 MHz frequency band. This multichannel radio
offers both simplex and semi-duplex operation with a wide
range of options and accessories available.
Advanced state-of-the-art technology is used in the design
and manufacture of this synthesized radio to provide the most
in flexibility, capability, and adaptability to various system
configurations. Up to 10 channels are offered with tone and
digital Channel Guard programmable on a per channel basis.

OPTIONS AND ACCESSORIES

MGNC3P
Antenna, 450-470 MHz (19B802560P1)
MGAE1V
Speaker/Microphone (344A4209P30)
MGHC5L
Leather Case Assembly (use with 600 mAh
battery)
MGHC5M Leather Case Assembly (use with 1200 mAh
battery)
MGPA5B
600 mAh Battery, Nickel-Cadmium battery
(BKB 191 206/1)
MGPA5C
1200 mAh Battery, Nickel-Cadmium battery
(BKB 191 206/3)
MGC3HJ
Standard Desk Charger (344A4209P20)
MGC3HK
Rapid Multicharger (344A4209P21)

PROGRAMMABLE FEATURES

All programmable functions are controlled by the micro-
controller. The microcontroller reads specific channel informa-
tion from an Electronically Erasable Programmable Read Only
Memory (EEPROM). Refer to the programming manual pro-
vided with the programming adaptor kit for programming
instructions.
Except for the time-out-timer, the following features are
programmable on a per channel basis:
Time-out-timer
Channel transmit frequencies
Channel receive frequencies
Channel Guard frequencies - tone or digital
Transmit only channels
Receive only channels
Other programmable features:
Tx Delay
Channel busy lockout
Battery saver
Monitor inhibit
CTCSS OR DCS
Allows users to hear only messages intended for them and
blocks out all other communications (unless monitor button is
pressed) using a sub-audible tone. DCS operates in a similar
manner but uses a digitally generated signal.
CTCSS Non-Standard Tone Hi/Low Settings:
There are a maximum of two Non-Standard Tone
settings on the radios with 49.0 Hz being the lowest
setting and 260.0 Hz being the highest setting.
TRANSMIT TIME-OUT-TIMER
The transmit time-out-timer limits the time a user may
continuously transmit. When the PTT switch is released an-
other transmission may be initiated.
BUSY CHANNEL LOCK-OUT
Busy Channel Lock-Out is used to prevent the radio from
being keyed on a busy channel. If the PTT switch is pressed
while a carrier is present, as indicated by the Busy LED and/or
Call LED being lit, the transmit function is disabled and an
audible alarm will sound. When the BUSY LED is off (no
carrier is being received) the transmit function is enabled. This
option can be disabled by enabling the Marked Idle feature.
MARKED IDLE
This is a Busy Channel Lock-Out override. With the proper
tone present the Lock-Out will be disable.

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