John WB2OSZ

APRS101.pdf was the APRS protocol reference written in 2000.  It is missing decades of corrections, clarifications, and new features.  Implementing a product from this is likely to produce something incompatible with contemporary practices.     For Developers:   For a successful implementation, you need to track down and digest: ·        The original specification.

In 2014, Kenneth W. Finnegan wrote and important paper called Examining Ambiguities in the Automatic Packet Reporting System.  A search for that title will find dozens of copies and references scattered around.  He starts with the problem and attempts to provide a solution: …  This is proving to be problematic due

LoRa APRS represents a significant advancement in the world of amateur radio communication. This innovative technology combines the long-range capabilities of LoRa (Long Range) with the well-established Automatic Packet Reporting System (APRS), offering enhanced performance and exciting new possibilities for radio enthusiasts.   Key Features and Benefits   LoRa APRS operates on

Thanks to Jay DV7GDL for compiling this list of radios with APRS capbility builtin. APRS Radios (and other hardware) as of November 2024   (All radios can send and receive APRS text messages in addition to beacons and have user-accessable TNCs unless otherwise stated.)   In production: * LANCHONLH HG-UV98 5 watt HT.

APRS (Automatic Packet Reporting System) is a powerful tool for amateur radio operators to share location, weather, messages, Ham Radio Internet of Things, and other types of data. To ensure a negative experience for yourself and others on the APRS network, please follow these worst practices: * Transmit the location of

Why Authentication Matters In the context of APRS, authentication is crucial for several reasons: 1. Data Integrity: Authentication ensures that messages have not been tampered with during transmission. This is particularly important for critical information, such as weather reports or emergency alerts. 2. Source Verification: By verifying the source of

The document titled "Yet Another APRS Client" by KA2DDO provides a detailed exploration of a new software client developed for the Automatic Packet Reporting System (APRS), a vital tool in the amateur radio community. The paper aims to address the increasing demand for effective real-time data sharing among

Staying Connected in Paradise: APRS in Hawaii (written with help from Craig Paul KH6CP and Jeffrey Komori KH6JUZ) Hawaii, with its stunning landscapes and adventurous activities, is a dream destination for many. But adventuring often means venturing off the beaten path, and staying connected can be a challenge. This is

Now that billions of computers and mobile phones (which are handheld computers) are all connected by the Internet, the large growth is expected from the “Internet of Things.” What is a “thing?” It could be a temperature sensor, garage door opener, motion detector, flood water level, smoke alarm, antenna rotator,

"APRS is not a vehicle tracking system. It is a two-way tactical real-time digital communications system between all assets in a network sharing information about everything going on in the local area. On ham radio, this means if something is happening now, or there is information that could be