Join GitHub today
GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together.Sign up
-symbollength flag sets the how many samples make up each symbol and the default is 72.
The sample rate (fs) is determined from the symbol length and data rate according to the following:
fs = 32768 * Symbol Length
Rtl-sdr dongles have two ranges of valid sample rates:
225 kHz < fs < 300 kHz 900 kHz < fs < 3.2 MHz
Due to the nature of some optimizations in the decoder, symbol lengths must be multiples of 8. So there are a limited set of valid symbol lengths. They are given below:
|Symbol Length||Sample Rate|
Depending on your dongle, symbol lengths above 72 may drop samples. The default 72 is a fairly reliable value for most dongles.