| Code | Mode | ITU-R | Notes | 
| AM | Double-sideband amplitude modulated telephony | A3E | 
 | 
| AMTOR | Amateur Teleprinting Over Radio | J2B or F1B | BFSK | 
| ATV | Fast Scan Television | A3F | 
 | 
| CLOVER | Clover | 500HJ2B | 
 | 
| CLOVR2 | Clover II | 
 | 
 | 
| CW | Continuous wave telegraphy | A1A | 
 | 
| DATA | Digital | 3rd letter B | 
 | 
| FAX | Facsimile | 3rd letter C | 
 | 
| FM | Frequency modulated telephony | F3E | 
 | 
| FSK31 | FSK31 | J2E or F1B | BPSK | 
| FSK441 | WSJT meteor scatter mode | J2B | 4-FSK | 
| GTOR | Golay-TOR (G-TOR) | J2B | 
 | 
| HELL | Hellschreiber | J2C or A1C | 
 | 
| IMAGE | TV or FAX | 3rd letter C or F | 
 | 
| JT44 | WSJT moonbounce mode | J2B | 44-FSK | 
| MFSK16 | Multiple Frequency Shift Keying | 316HJ2B | 16-FSK | 
| MFSK8 | Multiple Frequency Shift Keying | J2B | 32-FSK | 
| MS188 | MIL-STD 188-110B | J2B | 39-OFDM DQPSK | 
| MT63 | MT-63 | 1KJ2B | 64-OFDM BDPSK | 
| MTTY | Minimum Shift Keying (MSK) RTTY | J2B or F1B | BFSK | 
| PACKET | Packet | J2B or F1B | BFSK | 
| PACTOR | PACTOR | J2B or F1B | BFSK | 
| PACTR2 | PACTOR II | J2B | 2-OFDM DQPSK | 
| PHONE | Voice telephony | 3rd letter E | 
 | 
| PSK125 | PSK125F | J2B | 
 | 
| PSK31 | PSK31 | J2B or G1B |   | 
| PSK63 | PSK63F | 100HJ2B | BPSK | 
| Q15X25 | Q15X25 (NEWQPSK) | J2B | 15-OFDM DQPSK | 
| QPSK31 | Quadrature PSK31 | J2B or G1B | QPSK | 
| RTTY | Baudot Radioteletype | F1B or J2B | 
 | 
| S4285 | NATO STANdardization AGreement (STANAG) 4285 | J2B | MFSK | 
| SSB | Single-sideband, suppressed carrier telephony | J3E | 
 | 
| SSTV | Slow Scan Television | J2F | 
 | 
| THORB | THROB | J2B | 9-FSK |