RF Neulink NL5000 Rev B0 - Manual (Page 4)

NL5000 User Manual Rev B0 3
1.0 Introduction
1.1
GENERAL
The NL5000 modem is a wireless modem designed to operate on the licensed land
mobile frequency bands at VHF, UHF, and 220 MHz. It supports over-the-air data
rates of up to 4800 bps in a 6.25 kHz channel, 9600 bps in a 12.5 kHz channel,
and 19.2 kbps in a 25 kHz channel. Besides offering data communications, the
NL5000 modem includes voice transceiver audio input and outputs. The complete
modem transceiver is housed in the standard NL5000 case, resulting in a light,
compact package.
1.2
MODEL IDENTIFICATION
The NL5000 modem has a part number in the form of “NL5000-VHF/LN”
Where:
The NL5000 is followed by the next major frequency band designator:
VHF
220 MHz
UHF
“L” is the Low portion of the sub-band designator:
L=136-162 for VHF and 400-420 for UHF
“H” is the High portion of the sub-band designator:
H=148-174 for VHF, and 450-470 for UHF
“N” designates the channel bandwidth:
S=6.25 kHz
N=12.5 kHz
W=25 kHz
Example: A NL5000-UHF/HN would be a UHF module for operation between 450
and 470 MHz, narrow (12.5 kHz channel spacing) IF bandwidth.