MDS 05-3624A01, Rev. B
OEM Series™ I/O Guide
27
RECEIVER
Type:
Double conversion superheterodyne
(84 MHz and 450 MHz IF)
Frequency Ranges (200 MHz):
220 to 240 MHz
Frequency Ranges (400 MHz):
330 to 355 MHz
355 to 380 MHz
380 to 400 MHz
400 to 420 MHz
420 to 450 MHz
450 to 480 MHz
480 to 512 MHz
406 to 430 MHz (Canadian Plan)
Frequency Increments:
6.25 kHz (Standard)
5 kHz (Special)
Frequency Stability:
1.5 ppm, –30 to +60 degrees C
Spurious and Image Rejection:
–70 dB
Sensitivity:
12 dB Sinad @ –116 dBm
Data Performance:
1 x 10
-6
@ –108 dBm
Intermodulation Rejection:
–70 dB minimum
Selectivity:
60 dB typical at adjacent channel (EIA)
Bandwidth:
12.5 kHz
DATA INTERFACE
RS-232 through DB-25 Connector
Baud Rates at Interface Port:
1200, 2400, 4800, 9600, and 19200* bps
Over-the-Air Data Rate:
9600 bps
4800 bps (ETSI)
Data Latency:
< 20 ms typical
DIAGNOSTICS
Self Test:
Yes
Local RS-232 RSSI and Setup:
Yes
4 LED Display:
PWR, DCD, TXD, and RXD
PRIMARY POWER
Voltage:
10 to 30 Vdc through a 5.5 mm pin plug or 2-pin
MDS connector
RX Current at 13.8 Vdc (typical):
75 mA
TX Current at 13.8 Vdc (typical):
575 mA @ high power (2W)
435 mA @ medium power (1W)
260 mA @ low power (100 mW)
TX Current at 24 Vdc (typical):
325 mA @ high power (2W)
250 mA @ medium power (1W)
150 mA @ low power (100 mW)
:Circuit Protection:
2 amp fuse, surface mount
Reverse Polarity Protection:
Diode across primary input
* At 19200 bps, the radio operates in a buffered mode, storing 50 characters at a time.
