Listen to networks

Brandmeister. Who is talking where comes from the Brandmeister last heard stream. The audio comes from the Hoseline: Brandmeister turns the digital signal into audio on its servers, and your browser plays it. For each group in your list the page keeps its own connection, so priority works cleanly. The Hoseline doesn't play local groups below 91.

C4FM. Yaesu System Fusion can't be heard directly in the browser, the voice codec is the same as for DMR. Many YSF reflectors and Wires-X rooms hang off a Brandmeister group, though, and Brandmeister reports in its last heard when a transmission came in over such a bridge („YSF Client“, „WIRES-X Link“). These groups carry the C4FM badge, and it lights up while someone is talking from C4FM. Detection is live; your browser remembers for 30 days which groups have had C4FM before.

FM-Funknetz. How many groups are busy right now comes from the network's status service. Listening there only works with your own access (callsign and key from the network) and isn't enabled on this page yet.

What goes through us. Audio and activity go straight from your browser to Brandmeister and FM-Funknetz, so they see your address. Only the names of the Brandmeister groups (fetched once a day) and your monitor list go through afu.tools. Only callsigns are shown, no names.

Data usage. A Brandmeister channel needs about 64 kbit/s while someone is talking. The Brandmeister activity stream, at a few kB per second, is the biggest item; the page drops it while it is in the background.