2. Device features
2.1. APRS station
WX3in1 Plus 2.0 allows you to generate APRS data packets with information field
defined by user and send them in a specified interval. In this way, it is possible to send
beacons, objects, weather and telemetry data.
2.2. APRS digipeater
The main purpose of the device is receiving and sending APRS data packets via
amateur radio transceiver. WX3in1 Plus 2.0 is capable of receiving an APRS packet,
decoding the sender, recipent, path and information field. Then actions are performed
in accordance with the options configured by user:
• Packet is digipeated via the APRS network,
• Packet is sent to the APRS-IS server,
• Packet is ignored if it was corrupted.
Device firmware implements the following mechanisms:
• Checksum Verification - packets with errors are ignored,
• Anti-flood - packets repeated in a short time interval are not forwarded,
• Path checking - a decision whether to digipeat a packet or not is made using a
filter stored in configuration data of the device. User defines whether to forward
WIDE1-1, WIDEn-N, SPn-N, or local path packets and the maximum value of N (so
called New-N paradigm),
• Area filter – allows to digipeat packets only from stations located within a defined
radius from the device, within a defined radius from a point on the map or within
a rectangle defined by north-western and south-eastern point on the map,
• Callsign filter - a simple callsign filter allows you to add stations to black list
(these stations will be ignored) or white list (only these stations will be
digipeated).
2.3. RF -> APRS-IS forwarding (I-Gate)
WX3in1 Plus 2.0 allows you to connect to APRS-IS server network. After logging to
selected server, it is possible to gate data received from the APRS radio network. All
packets with correct format and checksum are forwarded to APRS-IS.
2.4. APRS-IS -> RF forwarding
WX3in1 Plus 2.0 allows you to receive packets from APRS-IS server. Then a
decision is made whether to gate a packet to RF or not. It is possible to forward
different types of packets based on a filter defined in device configuration. APRS
message packets can be forwarded to stations which were heard on RF within limited
number of digi-hops (local RF), and they are repeated up to 3 times in case of no ACK
packet received from message recipient.
2.5. GPS module support
WX3in1 Plus 2.0 allows you to connect an optional GPS receiver module to report
5
To Next Page