APRS is now in its 25st year! APRS is digital communications information channel for Ham radio. As a single national channel (see map at right), it gives the mobile ham a place to monitor for …

APRS is now in its 21st year! APRS is digital communications information channel for Ham radio. As a single national channel (see map at right), it gives the mobile ham a place to monitor for …

ASTARS stands for APRS Satellite Tracking and Reporting System and refers to digital relay satellites and the global APRS internet linked system of ground stations that tie it all together …

A good state web page is a start. . A good group of volunteers helps. . And providing relevant information will help the rest of ham radio learn how resourceful APRS can be. . This …

Many popular APRS systems, unfortunately, use a constant transmission rate of X packets every Y period of time which results in a DOUBLING of QRM (over 480 packets) being generated

APRS SYMBOL ATTRIBUTES: One of the most important aspects of APRS is the display of tactical information on maps using symbols for each station. Each such SYMBOL has several …

Until now. This specification defines the APRS on-air protocol with a precision and clarity that make it a model for future efforts. The work done by members of the APRS Working Group, as …

Aug 2, 2006 · This page links to all live downlinks from all the APRS satellites being captured by volunteer ground stations around the world as part of the APRS-Internet System (APRS-IS).

APRStt, (APRS Touch-Tone (tm)) is an APRS protocol for a two-way DTMF-to-APRS gateway to permit the other 95% of ham radio operators with voice-only radios to exchange information …

Aug 24, 2010 · As shown in figure 10, and APRS message addressed to the address of "EMAIL" will be picked up by the worldwide APRS system and captured by the Sproul's WU2Z packet …