DigitalSignals
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The Sights and Sounds of Digital Modes
This page incorporates images, sounds and videos created by Frank, K2NCC ("tooner") - great work, Frank!
DM780-supported modes are shown first and in alphabetical order. The snapshots are shown at half-size; click on them to see the full-size images.
| Mode | DM780 Support | Image | Sound / Video | Comments
|
|---|---|---|---|---|
| BPSK31 | Yes | 
| Video | The most commonly used of the BPSK modes. Narrow bandwidth (31.5Hz) comes at the expense of speed (about 50wpm). Frequencies: 160m 1.838.15, 80m 3.580.15, 40m Region 1/3 7.035.15, 40m Region 2 7.070.15, 30m 10.142.150, 20m 14.070.15, 17m 18.100.15, 15m 21.080.15 and 21.070.15, 12m 24.920.15, 10m 28.120.15, 6m 50.290, 2m 144.144, 1.25m 222.07, 70cm 432.2, 33cm 909 |
| BPSK63 | Yes | 
| Video | Faster data transmission than BPSK31 but greater bandwidth (63Hz). Frequencies: 160m 1.838.15, 80m 3.582.5, 40m Region 1/3 7.037.5, 40m Region 2 7.072.5, 30m 10.142.5, 20m 14.072.5, 17m 18.102.5, 15m 21.072.5, 12m 24.925, 10m 28.122.5, 6m 50.290, 2m 144.144, 1.25m 222.07, 70cm 432.2, 33cm 909 |
| BPSK125 | Yes | 
| Video | Faster data transmission than BPSK31 or BPSK63 but greatest bandwidth (125Hz). Frequencies: 160m 1.838.15, 80m 3.582.5, 40m Region 1/3 7.037.5, 40m Region 2 7.072.5, 30m 10.142.5, 20m 14.072.5, 17m 18.102.5, 15m 21.072.5, 12m 24.925, 10m 28.122.5, 6m 50.290, 2m 144.144, 1.25m 222.07, 70cm 432.2, 33cm 909 |
| CW MCW | Yes | 
| CW and MCW result in the same type of transmission. Frequencies: Normal CW bandplan areas. | |
| DominoEx‑4 | Yes | 
| Video | DominoEx-4 uses 18 tones at a fixed amplitude. It is suitable for low signal strength use and is tolerant of frequency variations caused by, for example, Doppler shift. It has a speed of 29 wpm and a bandwidth of 173Hz. Frequencies: Normal narrow band digital bandplan areas. |
| DominoEx‑8 | Yes | 
| Video | DominoEx-8 uses 18 tones at a fixed amplitude. It is suitable for low signal strength use and is tolerant of frequency variations caused by, for example, Doppler shift. It has a speed of 58 wpm and a bandwidth of 346Hz. Frequencies: Normal narrow band digital bandplan areas. |
| DominoEx‑16 | Yes | 
| Video | DominoEx-16 uses 18 tones at a fixed amplitude. It is suitable for low signal strength use and is tolerant of frequency variations caused by, for example, Doppler shift. It has a speed of 115 wpm and a bandwidth of 355Hz. Frequencies: Normal narrow band digital bandplan areas. |
| Feld Hell | Yes | 
| Video | Frequencies: 160m 1.804, 80m 3.574-3.584, 40m 7.077-7.084, 30m Region 1 10.144, 30m Region 2 10.137, 20m 14.063, 17m 18.104, 15m 21.074, 12m 24.924, 10m 28.074 |
| FSK Hell 105 | Yes | 
| Video | Frequencies: |
| FSK Hell 245 | Yes | 
| Video | Frequencies: |
| MFSK‑8 | Yes | 
| Video | Frequencies: |
| MFSK‑16 | Yes | 
| Video | Frequencies: |
| MTS63 500 | Yes | 
| Video | Frequencies: |
| MTS63 1000 | Yes | 
| Video | Frequencies: |
| MTS63 2000 | Yes | 
| Video | Frequencies: |
| Olivia 125/4 | Yes | 
| Video | Frequencies: |
| Olivia 250/8 | Yes | 
| Video | Frequencies: |
| Olivia 500/16 | Yes | 
| Video | Frequencies: |
| Olivia 1000/32 | Yes | 
| Video | Frequencies: |
| Olivia 2000/64 | Yes | 
| Video | Frequencies: |
| RTTY 45.45 Baud 170Hz | Yes | 
| Video | 45.45 Baud with 170 Hz shift are the most used settings. Having chosen RTTY, DM780 allows the speed and shift to be changed. Frequencies: |
| RTTY 75 Baud 850Hz | Yes | 
| Video | 75 Baud with 850 Hz shift RTTY is in common use outside ham radio. Having chosen RTTY, DM780 allows the speed and shift to be changed. Frequencies: |
| Throb‑1 | Yes | 
| Video | Frequencies: |
| Throb‑2 | Yes | 
| Video | Frequencies: |
| Throb‑4 | Yes | 
| Video | Frequencies: |
| DGPS | No | Sound | Differential Global Positioning System. This is used with GPS to provide greater accuracy than GPS provides alone. Frequencies: 283.5kHz to 325kHz | |
| JT65A | No | 
| Video | Frequencies: 160m 1.806.27, 1.839.27, 80m 3.577.27, 40m 7.037.27, 7.040.27, 7.077.27, 30m 10.140.27, 20m 14.077.27, 17m 18.103.27, 15m 21.077.27, 12m 24.921.27, 10m 28.077.27 |
| MEPT‑JT (WSPR) | No | 
| MEPT-JT is used by the WSPR (Weak Signal Propagation Reporter) program and the also is available in the WSJT program. It uses a barely detectable slow frequency shift keying and to the ear sounds like an unmodulated carrier. For more information, see WSPR - Distant Whispers. Frequencies: 160m 1.838.000 - 1.838.200, 80m 3.594.000 - 3.594.200, 60m 5.288.600 - 5.288.800, 40m 7.040.000 - 7.040.200, 30m 10.140.100 - 10.140.300, 20m 14.097.000 - 14.097.200, 17m 18.106.000 - 18.106.200, 15m 21.096.000 - 21.096.200, 12m 24.926.000 - 24.926.200, 10m 28.126.000 - 28.126.200, 6m 50.294.400 - 50.294.600, 2m 144.489.900 - 144.490.100 |
