Company Confidential
6
Raveon Technologies Corp.
2. Overview
The
RF-7800W
GPS transponder is a rugged, high-speed UHF data modem with a built-
in 12-channel GPS receiver. It has ½ to 5 watts of RF power output, and operates as a
GPS transponder for tracking, and a radio modem for sending and receiving data.
The RF7800W Ethernet port provides both power (Power-Over-Ethernet) and
communications by means of an integrated Ethernet 10/100 Base-T interface.
For privacy and security, over-the air encryption is standard on every
RF-7800W
radio.
For radio network versatility, the
RF-7800W
incorporates a 16-bit identification code,
allowing up to 65,000 units to be identified in one system. For wide-area coverage, all
RF-7800W
transponders may be set to store-and-forward messages from other
RF-
7800W
transponders.
2.1. Features
Transmissions include ID, position, speed, heading, voltage, temperature, input/output status, UTC time, and
proximity.
Ultra-fast 3mS TX-RX switching and 4-
level GFSK modem allows truly “Real Time” tracking and status.
Outputs and accepts NMEA 0183 GLL, TLL, WPT, GSV, and PRAVE messages.
Built-in TDMA channel access allowing truly real-time tracking (200 transmission in 10 seconds)
Low power consumption.
16 bit addressing for up to 65,535 different unique IDs per channel.
10/100 Ethernet interface.
3. Operation
3.1. System Mode
The RF-7800W is generally configured in two different system modes; a Transmitter or a
Receiver. Transmitters may be either a PRIMARY and a SECONDARY.
The MODE command is used to read and set the System Mode. The table below shows
the defa
ult parameters that are configured when a unit’s MODE is programmed with the
MODE command.
System Mode:
TX
RX
TXRX P
TXRX S
Slot Number
1
N/A
1
2
Position TX
Yes
No
Yes
Yes
Able to receive
No
Yes
Yes
Yes
ID
1
2
1
2
