# Table 2 - Mode Designations

## 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