This is a standalone CATS transceiver, designed to be used in mobile installations. It can also be used as a standalone digipeater station.
Features
Integrated GPS, with port for optional external antenna
Configurable using serial terminal software - no extra software required
Transmits location, voltage, transmitter temperature on a configurable cadence
Black hole setting allows disabling location transmissions in a specified geofence
Useful for privacy and to prevent transmitting exact home or work address
Can be configured to turn off at a threshold voltage
Switches back on automatically when voltage level rises
Useful to prevent an always-connected CATS transceiver from draining car battery
Fully integrated digipeater
1W transmit power
With CATS coding gains, this is equivalent to a much more powerful APRS transmitter
6-18V DC input
Input power regulation suppresses harsh automotive electrical noise and transient spikes
Initial Setup
Warning: Do not run the mobile transceiver without a properly matched antenna or dummy load connected. Failure to do so could result in transmitter failure!
Configuration
Connect USB to the front of the unit.
Refer to instructions here.
Running
Connect antenna or dummy load to antenna port on the back of the unit. Ensure you connect it to the right port - not the GPS antenna port.
Optionally, connect an external GPS antenna to the GPS antenna port on the back of the unit.
Connect a power source between 6-18V to the screw terminals on the back of the unit. Look at the LEDs to verify the board is working as intended.
LEDs
| Green light | Red Light | Status |
|---|---|---|
| On | Momentary flashes | Board operating normally. Red flashes are on data transmissions |
| Flashing | Off | Connected to USB for programming. TX disabled |
| On | Flashing | TX disabled by configuration |
| Flashing | Flashing | Board error, possible software or hardware issue |
| Off | Off | Power is not connected, or voltage is below configured threshold voltage |
There is also a red LED on the GPS module itself. This LED will blink when the GPS has a fix.
Ordering
The mobile transceiver is available for $69 USD, plus shipping.
You can purchase from Tindie.