fsq   11

FSQ - Signal Identification Wiki

* IFK+, providing drift-proof operation and good tolerance of multi-path interference.
* Efficient Alphabet, where most letters and punctuations can be sent in just 1 symbol.
* No synchronization required for decoding, allowing fast acquisition of signal
Arbitrary transmission speed, allowing transmission and reception of baudrates at any rate between 2-6 Bd, without requiring adjustment on the receiver's side.
* Chat operation, behaves like a messaging app.
* Supports selective cal...
fsq  fast  simple  qso  hf  radio  text  chat  telemetry 
august 2018 by floehopper
Arduino Masters Ham Radio Digital Mode | Hackaday
[jmilldrum] really gets a lot of use out of his Si5351A breakout board. He’s a ham [NT7S], and the Si5351A can generate multiple square waves ranging from 8 kHz to 160 MHz, so it only stands to reason that it is going to be a useful tool for any RF hacker. His most recent exploit is to use the I2C-controllable chip to implement a Fast Simple QSO (FSQ) beacon with an Arduino.

FSQ is a relatively new digital mode that uses a form of low rate FSK to send text and images in a way that is robust under difficult RF propagation. There are 32 different tones used for symbols so common characters only require a single tone. No character takes more than two tones.
hamradio  ham  arduino  transmitter  beacon  fsq 
april 2018 by cyberchucktx
upcrob/fsq: A tool for querying the file system with a SQL-like language.
fsq - A tool for querying the file system with a SQL-like language.
cui  tool  fsq  system 
april 2017 by oppara

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