S1S3S5S7S9+20+40
-- dBFS
Decoder
Pick a digital service or a decoder.
No decoder running. Choose SSTV or WeFax for images, CW or RTTY for text, or a service from the list.
Digital & trunked receiver
Plug in the RTL-SDR, connect, then one-touch a digital service or decoder. The analog receiver is one click away in the top bar.
Decodes here
SSTV, WeFax / NOAA APT images, plus CW and RTTY text. Trunk control-channel monitor.
Can't decode
P25/DMR digital voice (patented vocoder); encrypted talkgroups (no one can).