Types of modulation

 Audio modes:

• AM Amplitude modulation.
• SSB Single sideband, It can be USB upper sideband or LSB lower sideband.
• FM Frequency modulation, NFM (Narrow fm) or WFM (Wide fm).
  

Data modes:

• CW Continuous wave.
• RTTY Radioteletype
• SSTV Slow-scan television
  

Others:

FSK441, FT8, G-TOR, Hell, JT65, MSK144, MT63, MFSK, NAVTEX. PACKET, PACTOR, PSK, WSPR

World Radio TV Handbook

We are proud to present the 75th edition of the bestselling directory of global broadcasting on LW, MW, SW and FM.

The Features section for this 75th edition includes articles on the Development of HF Transmitters, the history of Radio in Bhutan, Coastwatchers and the AWA 3BZ in the Pacific, and Scandinavian Weekend Radio. There are equipment reviews of the AOR AR5700D, Icom IC-7610, KiwiSDR, Bonito MegaDipol, Tecsun PL-990, and the SDRPlay RSPdx, along with other articles, information and maps.
 

MultiPSK

Ham Radio Software from F6CTE

MultiPSK

Base band modes: POCSAG, AIS, Packet 9600 bauds (G3RUH), DSTAR, C4FM, DMR, P25
Hellschreiber modes: FELD HELL / FM HELL(105-245) / PSK HELL / HELL 80
Graphic modes: HF FAX / SSTV / PSK SSTV modes (mentioned above) / MFSK16 SSTV (mentioned above)
PPM (by positioned pulses) modes: mode S (ADS-B included)
DSP modes: Filters / Analysis / Binaural CW reception
RTTY, CW, BPSK31, BPSK63 and PSKFEC31 Panoramics
Identifiers: Video ID / RS ID / Call ID
TCP/IP digital modem
Integered SdR demodulator/modulator

Great program, many possibilities with numerous available configurations, it requires a little learning due to all the available options that they offer us that are many.

Fldigi

Software By W1HKJ & Associates
Fldigi is a modem program for most of the digital modes used by radio amateurs today: CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia, and Throb are all supported. It can help calibrate a sound card to a time signal and do frequency measurement tests.
Good software to receive digital modes, easy to configure and with updated database for cat control of the radio.