Presentation on theme: "Fldigi- Realtime Messaging System Winmor – Radio System"— Presentation transcript:
1 Fldigi- Realtime Messaging System Winmor – Radio E-mail System HF Digital ModesFldigi- Realtime Messaging SystemWinmor – Radio System
2 What is a Digital Mode?Digital Modes are a means of operating Amateur Radio from a computer keyboardIn this context, we are normally talking about chat modes used on the HF (high frequency) bandsUsed to have a regular conversation in a similar way to voice or CW, where one operator talks for a minute or two, then another does the same.Normally a two party QSO, but these chat modes could allow multiple operators to take part in a net.
3 What is a Digital Mode? #2The computer acts as a modem(modulator - demodulator)Sound card used to convert digital of PC to analog audio for the radioCan use the built in PC sound card or external such as Tigetronics SignaLinkSoftware program can control the transceiver depending on typeRemote control connector (Icom CI-V or Serial)Audio input via ACC connector or Mic
4 What is a Digital Mode? #3 Many software programs available Digipan, HRD/DM780, MixW, MultiPSK, HamScope & FldigiMost are multi-modePSK, DominoEX, MFSK, RTTY, CW..Easy tuning of signals using “Waterfall” displayShows multiple QSOsPrearranged message “MacrosCQ, Me/QTH, Rerun, Brag..
5 What is a Digital Mode? #4Because of sophisticated digital signal processing, digital modes can offer:Performance that cannot be achieved using voice (and in some cases even CW), through the use of reduced bandwidthPSK31 uses100 hertz channels with 30 hertz signalsTens of QSOs in a 3Khz bandwidth versus one voiceImproved signal-to-noise performance (Reception below noise level)Reduced transmitter power requirement (Typically use 5 to 30 watts)Some modes also offer built-in automatic error correction
6 What is a Digital Mode? #5Digital Mode operating procedure is not unlike Morse operationMany of the same abbreviations are used (CQ, DE, FB, K, SK, PSE, btu.. )Software such as Fldigi makes for simple operationMost of the procedural business is setup for you using the keyboard and point-click mouse operation
7 What is Fldigi #1A multi-mode software program intended for Amateur Radio Digital Modes using a PCOperates in conjunction with HF SSB radioMost digital modes use USBSometimes used in VHF/UHF operation for NBEMS (Narrow Band Emergency Messaging System)Uses PC sound card I/O to radioMay also use external sound card such as SignaLink USB from TigertronicsUses audio-frequency signalsSound card converts digital characters of PC to analog sounds for radio
8 What is Fldigi #2Software can typically control several radio functions depending modelChange Band and FrequencyRF Power, Squelch, Speaker VolumeFldigi is a multi-modeCan operate several digital modesFldigi includes popular modes, such as PSK, MFSK, RTTY, DominoEX, Olivia, Contestia and even CWFldigi runs on multiple operating systemsLinux, OS-X(MAC) and Windows
9 Further Information Lead Developer: Dave Freese – W1HKJ WWW.W1hkj.com
10 Emergency Radio E-mail Systems Getting Started with Winlink 2000&RMS Express with Winmor TNC
11 Radio SystemsWinlink 2000 (WL2K)is a worldwide system for sending and receiving over radioThe connection from the users computer does not depend on the InternetWidely used by mariners, RV Campers and various groups for emergency communication
12 Winlink Messaging System Perth, AustraliaSan Diego, CABrentwood, TNHalifax, NSWien, AustriaCommon Message Servers (CMS)5 Mirrored Servers Located Around The WorldInternetRadio Message Servers (RMS)Servers Maintained by Hams Around The WorldProvide Internet Connection to CMS ServersHam Radio StationRunning RMS Express & Winmor TNC
13 Winlink Messaging System Like regular , Winlink messages are sent to a specific address, and may contain attachments such as pictures, maps, ICS forms, etc.s can be sent between other Winlink stations and normal SMTP/POP3 servers like gmail.com
14 Winlink Messaging System s sent through Winlink on the ham bands must follow the usual rules for amateur radio communicationsMay not be used for commercial applications, and messages may not be encryptedYou can go to this site to check the current status of RMS servers
15 Winlink Connection Modes There are four paths a user can connect to the Winlink systemVia HF radio to one of the RMS hubsVia VHF/UHF radio to a local RMS hubTwo RMS stations in V.C on MHzCan use Outpost packet systems to send sVia Telenet protocol over the internetTerminal emulation program that allows computer users to connect interactively to a server and access remote sites, e.g. on the InternetVia Winlink Webmail over the internetLike using G-MailNeed Winlink account: “ham
16 HF Winlink OperationUsing HF radio, it is possible to connect to the Winlink system over long distancesOften used by mariners to get information and send while cruising the high seasIn a disaster, HF Winlink allows us to connect to a area where the internet may still be operational
17 Radio SystemsAs with all digital modes, certain protocols are used to encode data into a form that can be transmitted over radioTwo protocols are used for sending Winlink messages over HF radioPactor 3Winmor
18 Pactor 3Pactor-3: Is a superior protocol that can reliably send data over long distances with weak signals over extremely noisy conditionsUsed by most mariners and emergency organizations for contingency communicationsUnfortunately, Pactor-3 is proprietary protocol that requires a TNC that costs about $1,400The ACS/ARES radio room here at ECSS has a Pactor-3 system
19 WinmorWINMOR: Winmor was developed by the Winlink development team as a low cost alternative to Pactor 3It is an open protocol, and operates through low cost sound card devices such as the SignaLink USB$1,400 Vs $100
20 Pactor vs Winmor Pactor I 200 300Hz $50 -150 Pactor II 700 450Hz SystemRate bits/sec (Max)BandwidthCost (Approx)Pactor I200300Hz$Pactor II700450Hz$1K - $1.5KPactor III27222.2 – 2.4Khz$1.2K – 1.6KWinmor 500329500HzWindows w/Sound CardWinmor160013141600Hz
21 Equipment Needed for Winmor Requirements are modestComputer running Windows XP through Windows 7 with at least 1 GB of RamRMS Express Client software and associated ITSHF Propagation predictionA SignaLink USB sound interfaceA HF radio and associated antennaWinmor RMS’s are found on 80,40,30 & 20 meters
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