javAPRSSrvr is an APRS-IS server written 100% in Java. It runs on any platform
that supports Java 8 and above. It is currently used extensively on
Windows, Linux, FreeBSD Unix, and Mac OS X platforms. It provides connectivity between
APRS clients, IGates, and APRS-IS servers. javAPRSSrvr has been ported to Android 8 as an IGate and APRS-IS local server (javAPRSSrvrIGate in the Google Play Store).
javAPRSSrvr has been designed to meet the current de facto specifications of
APRS-IS. Further information on those specifications can be found at
supports most types of ports available from other servers. It implements a
thorough packet processing algorithm causing clean TNC2 format headers and unaltered
payloads to be sent to connected clients and servers. There are a number of
built-in safeguards that reduce or eliminate APRS-IS centric loops and duplicate packets.
javAPRSSrvr supports server adjuncts which can provide any type of extra
processing on packets. APRSFilter (second generation javAPRSFilter) is an adjunct that provides selective output to ports and allows users to define their own
data stream to receive.
javAPRSSrvr supports built-in clients which can feed directly into and from the server. APRSIGate provides full IGate functionality with an open TNC interface. DBGate
populates a database with APRS activity. NSRDigi is a client that provides full AX.25 NSR digipeater
functionality that is not APRS-centric. Other clients are WhoIsGate, EmailGate, CQGate, Object Generator, and WxNow Generator.
A block diagram of the javAPRSSrvr architecture can be found here.
A detailed overview of javAPRSSrvr can be downloaded from here.
javAPRSSrvr is available free-of-charge to amateur radio operators for amateur radio use on a by-request basis from
Pete Loveall AE5PL. You must supply your full
name and licensed amateur radio callsign. Commercial versions are available upon request for a fee which includes full ongoing
javAPRSSrvr is the basis for a number of specialized applications:
- DStarMonitor - Present on most Icom D-STAR repeater systems and now available for ircddbGateway. Provides both D-STAR reporting and D-PRS IGate functionality to D-STAR repeaters.
- DPRSInterface - Java-based UI providing monitoring of the D-STAR DV "serial" channel and D-PRS IGate functionality.
- javAPRSSrvrIGate - Android APRS IGate/APRS-IS server app. This free app is available via Google Play.