Compatible Programs: Setup Help. This page is intended to give ham radio operators some information about the various ways packet is being used today -- let's call them packet functions. Note that accuracty of information on this page may not be perfect since it is limited by the author's knowledge, location USA , and length of time in the hobby, so he welcomes any news, corrections and constructive comments, especially about activities in other countries or ITU regions. New users should also see the page on A Packet Overview on this website for a simplified overview of the mechanics of packet. The Baud Rates and Mode page has an overview of different signal modulation techniques used in packet.
An amateur radio satellite is an artificial satellite built and used by amateur radio operators for use in the Amateur-satellite service. The designation is assigned by AMSAT , an organization which promotes the development and launch of amateur radio satellites. Because of the prevalence of this designation, amateur radio satellites are often referred to as OSCARs. Currently, over 18 fully operational amateur radio satellites in orbit  act as repeaters , linear transponders , or store and forward digital relays. Throughout the years, amateur radio satellites have helped make breakthroughs in the science of satellite communications. A few advancements include the launch of the first satellite voice transponder OSCAR 3 and the development of highly advanced digital "store-and-forward" messaging transponder techniques. The information presented regarding functional satellites is outdated quickly as the Amateur Radio Satellite community has become very active in building and being provided educational secondary cargo launch opportunities.
Here is what we know and our current forward plan. The packet system in the Columbus module started to act up late last week, sending only a beacon. The ARISS team requested a power recycle by the crew, and with that power recycle, the packet system appears to have stop functioning completely.
APRS satellite missions dating back to see list below also allow end-user-to-end user real-time digital data exchange typically between mobiles and handheld radios. See the Satellite Simulated Emergency Test page. See how.