![]() ![]() ![]() Many modes supported, but only one message decoded at a timeĪ tent that with a RTTY/Digital station set up will have one or two computers Logging computer Digital modes computer (if not on the same machine as logging) It will have an instruction sheet for how to do digital on that equipment What software program to open (digipan, fldigi, other) Setting the transmitter power 100W for voice SSB Likely 20-30W for digital modes Possibly how to set the specific windows computer sound level Adjusting RF gain for good waterfall display i.e., lower gain until waterfall shows just signals of interest What mode to set the radio – typically SSB Upper Side Band USB Some radios may have a special digital mode What frequency to tune the transceiver to Each digital mode has its own commonly used frequencies RTTY 7.084,, Set the transceiver and computer as indicatedġ0 For Field Day Operation – Search and Pounce Macro buttons can usually be clicked with the mouse Or Press a F1-9 function keyĨ FLDIGI Another Popular SW Tool One software tool - decodes many modes: PSK, RTTY, MFSK, … Macro buttons across the top Multiple signal decode on right Waterfall below Two tones: 2295/2125 Hz Transmission speed: 45 baud, 5 bit characters => 60 WPM Bandwidth: 250Hz Typically at xx.080 – xx.099 part of the band Used to send text from one computer to another via Ham radio transceiver Messages of any length originally based on mechanical teletype No specific message format just text transmit/receive No built in error checking With low SNR and QRM expect some character errors Thus common to send critical information twice – like call sign References: /GettingStartedOnRtty.pdf Known for contesting and faster Photo courtesy of See that page for sounds also.Ħ Example DigiPan for PSK31 Showing 1 strong signal on the waterfall ![]() ![]() Means of sending text messages between computers via Ham radio communication Using a windows or unix based computer: Open a digital data mode program Set some station information Your name, call sign, maidenhead square code, and ITU zone These are used by the program to send common information Only your call sign is essential Set up connection to the radio Data connection Can be an analog audio in and out to a sound card Some radios have special RTTY digital data connection Some means to activate the transmitter push to talk May need to set up com ports/usb ports on the computerĥ RTTY Digital Data Mode RTTY Radio TeleTYpe Why This Briefing? It has been suggested we do more digital modes in 2018 Field Day 2018 Digital Modes RTTY is an option Why? Enables contacts on higher bands despite poor sunspot propagation Lower SNR required than phone contacts Develop additional skills for weak signal emergency communication Easier to learn than CW for weak signal use Possibly attract additional operators who don’t do CW or Phoneģ YES, we should be prepared to use those modesĬontents Understand RTTY mode What you will need to do RTTY on Field Day What you need to set up your own RTTY capability Not included… Should we use RTTY, PSK31, FT8, MFSK or other digital mode Answer is YES, we should be prepared to use those modes Presentation on theme: "RTTY Digital Mode Contesting and Prep for Field Day Use"- Presentation transcript:ġ RTTY Digital Mode Contesting and Prep for Field Day UseĢ It has been suggested we do more digital modes in 2018 ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |