1 / 21

Digital Modes

Digital Modes. What Are Digital Modes. Conversational (non-voice) Person to person Interactive Non-Voice keyboard to keyboard Not file driven Software driven Computer / Soundcard enabled Low bandwidth (mostly). Digital Modes - Advantages. Low bandwidth Low power requirements

dyre
Télécharger la présentation

Digital Modes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Digital Modes

  2. What Are Digital Modes • Conversational (non-voice) • Person to person • Interactive • Non-Voice keyboard to keyboard • Not file driven • Software driven • Computer / Soundcard enabled • Low bandwidth (mostly)

  3. Digital Modes - Advantages • Low bandwidth • Low power requirements • Convenient software / hardware interface

  4. Digital Modes - Disadvantages • Computer required • Some radios can work PSK directly • Sometimes hard to set up • Winlink 2000 using software • Sometimes difficult to tune • Confusion factor

  5. PSK MCW RTTY JT65 Hellschreiber MT63 MFSK16 Amtor Pactor G-TOR Clover Packet WSJT Other Modes Popular Digital Modes

  6. Common Frequencies

  7. What Is Needed • Radio • Computer • Software • Interface

  8. Radio • SSB capable (USB is std sideband) • Keying circuit - solidstate compatible (nice) • ALC Metering • Adjustable power

  9. Yaesu FT 857/897 series FT-817 Kenwood TS-2000 TS-480 Series Ten-Tec Icom IC-703 IC-706 IC-7000 IC-718 Elecraft K2 K3 Popular Radios

  10. Computer & Related • 1GHz Pentium 4M or better (for Windows OS) • Soundcard • Serial interfaces or USB serial converters • Operating Systems • Linux (Many Varieties) • Macintosh • MS Windows • XP (Home or Pro) • Vista (Home or Business) • 7 • DOS↓

  11. Radio Operational Niceties • Data Port • Allows voice and data operation without unplugging a bunch of stuff • Control Port • Allows control software to change operating modes, frequency etc • Works with logging program for hands free logging

  12. DigiPan MixW ver. 2 MultiPSK TrueTTY AirLink HRD/DM 780 DxPSK Easyterm EZT3271 Fldigi Intercom - DOS KC9L PSK LinPsk - Psk31 program - Linux MPSKWIQ PacTerm for Windows - Kantronics™ TNCs PropNerPSK PSK31 by G3PLX PSK31 Deluxe PSKGNR Front end QuikPSK RoMac RX-PSK31SMARTPSK TWPSK - Linux W1SQLPSK WinPSK WinPSKse WinWarbler WO-PSK YG-PSK Zakanaka Some Popular Programs

  13. Sound Card Interfaces

  14. Connections (Data Port)

  15. Connections (No Data Port)

  16. Which Interface is Best? What to look for: • Transformer isolation on TX & RX • Keying circuit works with your radio • Boat anchors may require relays • Solidstate radios can us opto-isolators • Adjustable signal levels • Mike switching for radios without a data port

  17. Can I build my own Interface? • Yes • Breadboard • Dead bug • Circuit board

  18. Typical Audio Interface

  19. Typical Keying/PTT Interface

  20. Questions

  21. Demo Ham Radio Delux Demo Mode

More Related