4
OEM Series™ I/O Guide
MDS 05-3624A01, Rev. B
Switched Carrier Operation
Switched Carrier operation is a half-duplex mode where the master
station transmitter is keyed to send data and unkeyed to receive. MDS
OEM Series™ radios operate in switched carrier mode and are keyed
when data is present.
NOTE:
MDS OEM Series™ radios do not support full-duplex
operation (i.e., transmitting and receiving at the same time).
For information on other MDS products that provide this
capability, contact your sales representative.
Single Frequency (Simplex) Operation
Single frequency operation (also known as simplex) is a special case of
switched carrier operation. Single frequency operation is
automatically
selected whenever the transmit and receive frequencies are set to the
same value.
1.3 Model Number Codes
The radio model number is printed on the PC board or on the radio
enclosure, and provides key information about how the radio was
configured when was shipped from the factory. See
for an
explanation of the model number characters.
Invisible place holder
Figure 4. MDS OEM Series™ Model Number Codes
THIS INFORMATION IS
SUBJECT TO
CHANGE.
DO NOT USE FOR
PRODUCT ORDERING.
EL705
BAND
SUB-BAND
2 = 200 MHz
A = 220240 MHz
4 = 400 MHz
A = 330355 MHz
B = 355380 MHz
C = 380400 MHz
D = 400420 MHz
E = 420450 MHz
F = 450470 MHz
G = 480512 MHz
H = 406430 MHz
BANDWIDTH
1 = 12.5 kHz Domestic
2 = 12.5 kHz ETSI
ENCLOSURE
0 = Without Enclosure
1 = With Enclosure
SAFETY
N = None
C = CE Mark
MODEM
2 = 4800 BPS
3 = 9600 BPS
AGENCY
E = ETSI
F = FCC/IC
N = None
N
A
N
