Transcript Document
HAM RADIO UNIVERSITY 2003 Presentation by: Len Signoretti N2LEN January 19, 2003 Seminar Objectives Understanding of VoIP (Voice over IP) Relativity to Amateur Radio Uses of Echolink System Other alternatives using VoIP Technology Hardware Requirements Using Echolink Resources Voice over IP •Encryption and Decryption to and from Analog and Digital Audio - Codec •Ability to transfer audio over IP to specified IP Address •Seamless transition of codec – AD/DA •Vox or COS/COR The Future of Amateur Radio CW – Morse Code AM – Amplitude Modulation FM – Frequency Modulation SSB – Single Side Band Digital – Packet, Pactor, Amtor, RTTY, PSK31, … VoIP – Voice over IP Alternatives to Echolink VoIP System IP Based Software EchoLink Windows Based IRLP Linux / UNIX Based EQSO Windows Based Computer Interface Radio Interface Computer Interface ONLY!! Computer Interface Radio Interface Sound Card Parrallel Port Mic Input Speaker Output Sound Card COM Port Mic Input Speaker Output Sound Card Microphone Speakers Sound Card COM Port Mic Input Speaker Output Echolink Friendly Windows GUI Usable from Computer OR Radio Easy configuration for RF Link or Computer user No Special hardware required VOX PTT No AGC Not able to Connect and Disconnect to and from Multiple stations ( RF Configuration ) IRLP COS / COR Activated PTT Indicator LED’s for visual indicators May be more stable the other OS’s Having to learn new OS Have to have 24/7 connection EQSO Multiple Chat Rooms. Don’t have to be licensed ham to use. Password Protected Rooms. RF Links available. Can run more than 1 VoIP application at once. Interfaces Echolink Interfaces THE “ULI” BOARD oUses Standard 1/8” Mono Connectors oEasily Re-Programmable PIC Chip for Updates oNothing too Complex oNothing Hidden! The WB2REM Interface board http://www.ilinkboards.com/ The WB2REM\G4CDY “ULI” BOARD oStandard 8 Pin Microphone connectors oRJ-45 Modular Connector oSwitches on front panel for ON/OFF oNice installation presentation Uses Standard Connectors for Interfacing Small breadboard area for redesigning Uses readily available components Indicator Lights for Status of Operation VA3TO interface board http://www.ilinkca.com/ WIRES II http://www.vxstd.com/en/wiresinfo-en/ Simple PTT Comport keying circuit Status Lights for Indication of Activity Small design for Easy installation into housing Inputs and Outputs for External devices http://www.irlp.net/ Parts necessary to build an r. f. gateway The EQSO System The EQSO system setup EQSO RF Gateway main screen Text Tex t Text Text Text Tex t Text EQSO Administrative Control EQSO Administrative control #2 EQSO system monitor Eqso conference server software EQSO website for software download http://www.eqso.net/ EQSO information website http://www.eqso.org ECHOLINK Familiar Look to other Applications Easy navigation through Menus or Toolbar Icons Help files as well as newsgroups for support Controls to help make audio seamless Point vales given to ensure proper settings every time. The Echolink sysop window When a station connects When a station connects #2… Echolink system setup Windows sound card adjustments Soundcard recording properties Advanced recording console Conference servers (roundtable gathering) Echolink connection stats Echolink server setup Echolink setup r. f. gateway timing Echolink audio setup and adjustments for dialup connection Recording .wav welcome files for r. f. gateway 8 bit mono compression The “Bridge” conference server software (for echolink) by: Skip WB6YMH ***** http://CqiNet.sourceforge.net ***** Echolink website: http://www.echolink.org/el/ ARRL President Jim Haynie, W5JBP addresses The N2LEN 9/11 Commemorative Net THE ARRL NOTES 9/11 NET 9/11 Net Makes Global News Globally Linked 9/11 Net Check-in List http://groups.yahoo.com/group /echolink/ The End of slide presentation: Please feel free to use this presentation at your leisure: Email: [email protected] Website: http://www.qsl.net/n2len/ The “N2LEN” cross-linked repeater system serving the entire New York City metropolitan area. Best 73, Len N2LEN