Digital Modes Terminology

123456789101112131415161718
Across
  1. 3. Where the transmitter sends data and the receiver acknowledges when it has arrived.
  2. 6. This software covers all the JT or Joe Taylor modes.
  3. 7. Open specification with proprietary vocoder system available from Yaesu.
  4. 9. An amateur radio digital mode that has been designed to provide an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions.
  5. 10. A digital mode scheme that uses Frequency Shift Keying modulation and is used primarily on the HF portion of the radio spectrum.
  6. 12. The Swiss Army Knife of digital mode software, with versions for all operating systems.
  7. 14. A digital mode designed to maximize communication even when signals are very weak (as low as -24dB).
  8. 16. Transmits data in groups of 10s or 100s of bytes that allows improved throughput and error control.
  9. 17. Found in both commercial and public safety equipment from multiple vendors.
  10. 18. A digital protocol intended for amateur radio communications with extremely weak signals. It was designed to optimize Earth-Moon-Earth contacts and meteor scatter on VHF or UHF.
Down
  1. 1. Where a transmitter sends a small group of characters and when they have been successfully received, the receiver sends an acknowledgement. To check the data has been received, performs a parity check to give an indication of whether it has been received correctly.
  2. 2. A global radio email client that supports a wide selection of transceivers, TNC's, and multimode controllers.
  3. 4. This digital mode was one of the first computer style modes to be used at HF. Data is sent out in small groups and when acknowledgements are received the next small group is sent.
  4. 5. A digital mode normally generated and decoded using PC soundcards that occupies very small bandwidths (approximately 100 Hz) and offers effective communication at low power.
  5. 8. A software set that is used for weak signal communication between stations.
  6. 11. A digital MFSK mode that is highly resistant to fading and noise.
  7. 13. Open specification with proprietary vocoder system available from Icom, Kenwood, and FlexRadio Systems.
  8. 15. The original keyboard to keyboard mode based on the 5-bit Baudot code. It now uses PCs for coding and decoding, using 170 Hz frequency shift keying at a 45.45 baud rate resulting in 60 words per minute.