Digital Data Modes
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
I William G Radicic, Amateur Radio Call Sign NS0A, Extra Class, License
I William G Radicic, amateur radio call sign NS0A, Extra class, license - endorse the position of the Members of this Board of Directors who unanimously are in support of the Commission’s proposal and encourage the elimination of the outdated and symbol rate limits. Opponents to WD Docket No. 16-239 have responded to internet and social media campaigns led by Theodore Rappaport, resulting in a multitude of comments that echo false or misleading technical points, driven by highly emotional arguments about “national security, crime and terrorism”. We address these arguments with the documented realities of science and logic in hopes that the Commission will find them balanced, informed, and trustworthy counterpoints for good decision making. The HF Symbol Rate Limitation in § 97.307(3) Should be Removed The current 300 baud symbol rate limitation was instituted around 1980 by the Commission as a mechanism to manage HF digital modes (both FEC and ARQ) that would be compatible with typical HF signal widths in use. The most common amateur HF digital modes in use then were AMTOR (similar to SITOR), later refined as Pactor 1 and HF packet (300 baud FSK). Since then, technical advancements in modulation, coding technology and Digital Signal Processing (DSP) now make it possible to implement significantly faster, more robust digital protocols with better spectrum efficiency (e.g. PSK31/63, MT63, Pactor 2, Pactor 3, WINMOR, ARDOP, VARA, Pactor 4, and other popular amateur modes). These modes are possible and affordable due primarily to the significant advancements in digital signal processing, cost reductions in computers, sound cards, and DSP processing chips since the original 300 baud symbol rate restriction was instituted. -
English Help File by Colin Bell, 2E0BPP. To
MixW Help Contents 25-Jul-2017 _________________________________________________________ *OVERVIEW OF MIXW 1. Welcome to MixW -- Information about the Program 2. Quick Start -- For experienced digital mode users 3. Registration -- How to become a registered user 4. Using the MixWHelp System -- Finding Information! *CONFIGURATION & SET UP 1. Configuration -- Software Settings 2. Basic Set Up -- PC/Tcvr Interface 3. PTT Circuit -- Hardware Connection 4. Configuring Macros -- Operating Efficiently *OPERATION 1. Starting Mixw - how to start Mixw 2. General Operation - for all modes 3. File Menu Items - short descriptions 4. Edit Menu Items - short descriptions 5. Options Menu Items - short descriptions 6. View Menu Items - short descriptions 7. Using the Status Bar - essential how-to 8. Logging and QSLing - essential how-to 9. Saving and Archiving - files changed for Mixw running *DIGITAL MODES CW FAX RTTY Amtor Packet Pactor PSK MFSK THROB FSK MT63 SSTV Hellschreiber Olivia Contestia RTTYM *APPENDICES 1. Cat Bar/Cat config and Bands.ini 2. Contest Operation 3. DX Cluster 4. FAQ's 5. File Descriptions 6. HF Digital Modes Band Plan 7. Keyboard Shortcuts 8. Macro Commands 9. MixW External Resources 10. MixW Installation 11. MixW Release History 12. QSLPRINT.EXE 13. Script Commands 14. The Eye of a Needle (TEOAN) 15. TNC Configuration and Operation 16. Using MixW Voice Keying 17. Using MixW with DXAtlas 18. Using MixW with other programs, DDE 19. Using the Spectrum Display 20. Using the Waterfall--Step by Step *Help Index *OVERVIEW OF MIXW _________________________________________________________ 1. Welcome to MixW -- Information about the Program 2. Quick Start -- For experienced digital mode users 3. Registration -- How to become a registered user 4. -
Product Specification
Product Specification p. 2 W-SPEED p. 4 p. 5 W-CLOUD p. 20 W74PC W-PCIe p. 25 W-PCI W74LAN W-PCIe-LAN, W-PCIe-LAN p. 27 W-SPECTRA-LAN W-Spectrum Analysis p. 20 W-Classifer W-BitView p. 23 W-SAT-email-Decoder p. 20 for Windows and Linux Product Specification Technical Overview and Specification Summary W-SPECTRA Software Characteristics Direct Receiver Control Support Wavecom receiver W-PCIe and WiNRADiO G3xDDC, e.g., G33DDC and G39DDC Instantaneous bi-directional receiver control Spectrum display wideband (up to 2 MHz) and narrowband (96 kHz) W-SPECTRA Operation Modes Direct Mode Memory Scan Frequency Search Automatic search signals (detect, classify and code Classify and decode a signal by Recan and verify signals ac- check) over a predefined fre- setting a receiver frequency cording to database entries. Description quency band according to a manually. Use “Sweep” mode New result can be inserted or search strategy. Results auto- to catch a signal in small range overwritten into the database matically inserted into a data- base Start to rescan the spectrum Start to sweep over a defined Start to search signals in a Start button according to the database en- frequency range wide range of frequency tries Stop button Stop sweeping Stop rescan Stop searching signals Jump to the previous frequen- Jump to the previous database Jump to the previous frequen- Previous button cy according to the step size entry cy according to the step size Jump to the next frequency Jump to the next database en- Jump to the next frequency Next button according -
Mixw202 HELP CONTENTS TABLE
MixW202 HELP CONTENTS TABLE WELCOME AND INSTALLATION Welcome Installation System Requeriments Quick Start Registration SET UP AND CONFIGURATION Configuration Basic Set PTT Circuit TNC Set up Interface Links Configuring Macros List of Macros MixW Version History OPERATION General Operat. Procedures HF Digital Modes Band Plan Amtor Frequency Pactor Frequency RTTY Frequency Packet Frequency FAX Receiving MFSK 16 Frequency Hell Frequency SSTV Frequency THROB Frequency MT63 Frequency QSO Technique Using MixW with DXAtlas Using MixW with other pgm, DDE Status Bar Logging and QSLing Contest Operation File Menu Item View Settings Using Macros Using a TNC DIGITAL MODES RTTY RTTY Intro and Theory RTTY Operation PSK 31 and BPSK 31 PSK 31 Intro and Theory PSK 31 Operation MFSK MFSK Intro and Theory MFSK 16 Operation PACTOR Pactor Introduction and Theory Pactor Operation AMTOR Amtor Introduction and Theory Amtor Operation PACKET BBS Commands TCP/IP over AX25 HF Packet Introduction HF Packet Operation VHF/UHF Packet Introduction VHF/UHF Packet Operation DX Cluster CW CW Introduction CW Operation HELLSCHREIBER Hell Introduction and Theory Hell Operation SSTV SSTV Introduction SSTV Operation THROB Throb Introduction and Theory Throb Operation FSK 31 FSK 31 Theory and Operation MT 63 MT 63 Introduction and Theory MT 63 Operation FAX FAX receiving Welcome to MixW version 2.02 State of the art digital mode software by Nick Fedoseev, UT2UZ and Denis Nechitailov UU9JDR. Help files by Scott E. Thile, K4SET The Demo version is good for 15 days, for registration information please see Registration MixW stands for a Mixture of different modes. With this release of Version 2.02, MixW now fully supports CW, BPSK31, QPSK31, MFSK, RTTY, FSK31, Packet (HF and VHF), Pactor RX/TX (TX requires TNC), Amtor (Sitor) TX/RX (No TNC needed), Hellschreiber, FAX (RX only), SSTV, THROB, and MT63. -
Packet Modes ALE So Let's Get Started Good Frequencies
or 200 baud FSK with a long packet length and package is SkySweeper (www.skysweep.com). (for the first time) data compression. It’s now While some modules work better than others, found in most free and cheap multimode decod- it provides a very full set of linkable decoders, ing programs. Unfortunately, it’s hardly ever used analyzers, filters, and other goodies that are great anymore, except for calling. fun to hook together and tinker with. Most real-world users have shelled out for the For Mac, there’s always Chris Smolinski’s expensive and extremely sophisticated PACTOR- MultiMode for OS-X. This program’s been around II, and its firmware upgrade called PACTOR-III. forever, and it does a lot of nice things for the price These can choose between a truly remarkable ($89 US from Smolinski’s site, www.blackcatsys- number of FSK and PSK schemes, adapting in tems.com). real time to channel conditions. It’s available only Any of these programs will have enough from the SCS company and its licensees. bells and whistles to keep you experimenting for Most HF e-mail systems use PACTOR-II months. Since you have a computer, use it and or one of its custom variations. Some computer Google to find more software and tips on how programs and modems can indeed receive these, to use what you have. There’s no such thing as but at a cost far beyond the means of most hob- knowing it all. byists. ❖ Good Frequencies ❖ ALE W1AW is the well-equipped headquarters ALE is not what you get at the local pub. -
Classification of Radio Signals and HF Transmission Modes with Deep
1 Classification of Radio Signals and HF Transmission Modes with Deep Learning Stefan Scholl [email protected] Abstract—This paper investigates deep neural networks for on modulation types and therefore this second step follows the radio signal classification. Instead of performing modulation classical way of designing expert features by hand. recognition and combining it with further analysis methods, the This paper investigates how neural networks can be used to classifier operates directly on the IQ data of the signals and outputs the transmission mode. A data set of radio signals of 18 classify signals by their transmission mode directly, instead different modes, that commonly occur in the HF radio band, is of classifying only modulation types. The approach purely presented and used as a showcase example. The data set considers follows the data driven paradigm by mapping input IQ data HF channel properties and is used to train four different deep to the output modes directly. As an example application this neural network architectures. The results of the best networks paper considers radio signals typically present in the HF show an excellent accuracy of up to 98%. band (3-30 MHz), because this wireless band contains many different modes that coexist closely spaced in the frequency I. INTRODUCTION spectrum. In total, 18 different HF transmission modes are Classification of radio signals is an essential task in sig- considered for classification. Four different types of neural nal intelligence and surveillance applications and is recently networks are trained on a synthetically generated data set, adopted in applications like cognitive radio and dynamic considering a noisy HF channel environment under imperfect spectrum access to continuously monitor the spectrum and receiver conditions. -
Read the ARSFI Comments Document
® Before The Federal Communications Commission Washington, D.C. 20554 In the Matter of: ) ) The Amendment of Part 97 of the ) Commission’s Amateur Radio Service Rules ) to Permit Greater Flexibility in ) Data Communications ) WT Docket No. 16-239 ) ) RM-11708 By: Loring Kutchins ) President, ) Amateur Radio Safety Foundation, Inc. ) For the Entire Board of Directors ) (See Appendix 1) ) ) ______________________________________) Comments in Support and Rebuttal of Opponent’s Arguments 1. Amateur Radio Safety Foundation, Inc. (ARSFI)1 ARSFI provides for the formation, training, maintenance, and testing of volunteer licensed amateur radio public and emergency services and networks using state of the art communications technology. These serve the public by facilitating emergency, health, or welfare communication in times of disaster or other communications emergencies. The primary project of ARSFI is the Winlink Global Radio Email system (winlink.org). ARSFI supports the day-to-day costs of running Winlink and projects to develop and improve radio telecommunications technologies. The Amateur Radio Safety Foundation was incorporated January 1, 2006, as a non- profit Florida Corporation; Federal ID Number 20-5586920. This corporation is a NON- PROFIT PUBLIC BENEFIT CORPORATION and is not organized for the private gain of any person. It is organized under the Non-Profit Public Benefit Corporation Law for public and charitable purposes. The purpose for which the corporation is organized is to transact any lawful business for which Non-Profit corporations may be organized under the laws of the State of Florida, as they may be amended from time to time and under Section 501(c) 3, Internal Revenue Code. -
Amateur Radio: 100Years of Discovery
By Jim Maxwell, W6CF Amateur Radio: 100Years of Discovery we approach the new millen- Faraday, heavily influenced Maxwell’s work, ered himself an amateur at heart. Still, he chose nium, it’s a happy coincidence but many of Maxwell’s contemporaries weren’t to devote his life to competing in the commercial that Amateur Radio is now convinced that his new theories were valid. It wireless marketplace; he never operated nor was As almost exactly 100 years old. would take nothing less than rock-solid ex- licensed as an amateur. It seems appropriate to stop for a moment and perimental effort to break down those walls of Back to the original question, we’ll prob- take a thoughtful trip to our beginning years, doubt. The German physicist Heinrich Hertz ably never know who the first Amateur Radio and even before. Why should we bother, you did just that, performing a series of classic operator was, but the Englishman Leslie Miller ask? Well, for many this will be a pleasant and experiments in the late 1880s during which he is surely a leading contender for that honor. nostalgic look back to the early days, the early generated, detected, and measured the proper- Leslie Miller has a solid place in amateur days, of course, being any day earlier than today! ties of electromagnetic waves predicted by history as the first person to have published a Moreover, as will be seen as we progress through Maxwell’s equations. Hertz, though, had no description of a simple-to-build transmitter and the events of this past century, there is much to particular interest in those waves except for the receiver for an amateur (and he used that word) be learned from our history. -
Amateur Radio Emergency Communications Guidebook Part 2 - Technical
Amateur Radio Emergency Communications Guidebook Part 2 - Technical Dr. John A. Allocca, WB2LUA Amateur Radio Emergency Communications Guidebook Part 2 - Technical Dr. John A. Allocca, WB2LUA 19 Lorraine Court, Northport, NY 11768 (631) 757-3919 [email protected] Copyright 2004 – updated 12/17/04 This guidebook may be reproduced, provided it is reproduced in it’s entirety without any changes TABLE OF CONTENTS Packet Radio------------------------------------------------------------------------------------------------------------------------- 3 PSK Radio-----------------------------------------------------------------------------------------------------------------------------20 Winlink 2000 -------------------------------------------------------------------------------------------------------------------------24 Satellite Radio-----------------------------------------------------------------------------------------------------------------------31 Antennas and Propagation-----------------------------------------------------------------------------------------------------39 Emergency Power -----------------------------------------------------------------------------------------------------------------49 US Amateur Bands -----------------------------------------------------------------------------------------------------------------55 Anderson Powerpoles-------------------------------------------------------------------------------------------------------------56 ITU Phonetic Alphabet ------------------------------------------------------------------------------------------------------------57 -
DIGITAL COMMUNICATIONS (Part 4) by AD5XJ Ken
DIGITAL COMMUNICATIONS (part 4) by AD5XJ Ken Disclaimer: These are my comments on digital communications and are not necessarily all there is to know on the subject. As with everything computer related – there are at least six ways to do the same thing. Given this caveat, let me say this is opinion and not the complete story. I only relate to you my experience of 5 or more years using digital modes and as SATERN Digital Net Manager to give you the benefit of my experience. I will leave the rest for you to research as you see fit. MT63 MT63 is a text only digital radio modulation mode for use in high noise/high reliability situations. It was developed by Pawel Jalocha, SP9VRC. MT63 is perhaps the most elaborate user of error correction techniques of all ham radio public digital modes. It uses a very efficient error correction method that uses character redundant sequences over several data packets. It has 64 tones spaced 15.625Hz apart, in the 1kHz bandwidth. It is so efficient that even if 25% of the character sent is obliterated, it will give perfect copy. This method of spreading characters from multiple words over several packets is known generally as Forward Error Correcting. The FEC error correction employed by MT63 uses a Walsh function that spreads the data bits of each character across all 64 of the tones of the signal spectrum and simultaneously repeats the information over a period of 64 symbols (at maximum interleave) within any one tone. This takes 6.4 seconds. -
DIGITAL COMMUNICATIONS (Part 2) by AD5XJ Ken
DIGITAL COMMUNICATIONS (part 2) by AD5XJ Ken Disclaimer: These are my comments on digital communications and are not necessarily all there is to know on the subject. As with everything computer related – there are at least six ways to do the same thing. Given this caveat, let me say this is opinion and not the complete story. I only relate to you my experience of 5 or more years using digital modes and as SATERN Digital Net Manager to give you the benefit of my experience. I will leave the rest for you to research as you see fit. This installment is a bit lengthy. There is a lot of information here which may be overwhelming at first. However, familiarization with this material will go a long way to understanding the digital ham radio enthusiasm. Take the time to use this material to do some listening on your own. You make your own conclusions about the modes discussed. I encourage you to experiment with the digital modes in receive to get the feel of each mode before trying to get on the air in QSO. You will learn the sounds of the transmitted signals and the methods and practices of each mode. Good etiquette for any mode is good amateur practice. The descriptions below are a thumbnail sketch of common ham radio digital modes in use at the time of this writing. It is designed to give you a closer look at each mode and highlight the advantages and shortcomings of each. There should be a distinction made between the digital mode and the transmission method used. -
My Favorite HAM Radio Software
My Favorite HAM Radio Software Hamfesters Radio Club Gregory D. Rosenberg (AB9MZ) Presented 2017-02-04 Updated 2017-03-12 Slide: 1 Antenna Design and Control Station Management Radio Control, Programming, and SDR Operating Modes Propagation, Beacons, and the Solar Cycle Logging, Log Analysis, Conversion Electronics and Circuit Design iOS and Android Applications Mobile Operation, APRS, and GPS 2 3 EZNEC QST September 2000, p. 66A quick review of this software. Software: minihttps://www.eznec.com/ Tutorials: http://www.hamradiodeals.co.uk/forums/viewforum.php?f=46 NEC2Go Simplified Nec2 modeling for amateurs and professionals. http://www.nec2go.com MiniNEC Pro QST February 1991, pp. 18-22 MININEC software is powerful, but you need to know its limitations. http://www.blackcatsystems.com/software/mininec-antenna-analysis-modeling-software.html PstRotator QST February 1991, pp. 18-22 MININEC software is powerful, but you need to know its limitations. http://www.blackcatsystems.com/software/mininec-antenna-analysis-modeling-software.html The ARRL in the past has offered online classes on antenna modeling and antenna design. Watch http://www.arrl.org/online-course-catalog for future class offerings. 4 5 A quiet room Good lighting A very comfortable chair A small refrigerator to keep you hydrated A map of the world Clocks set to GMT and your local time A timer 6 Grey Line software and a good time base. http://dx.qsl.net/propagation/greyline.html http://www.xericdesign.com/earthdesk.php ARRL, ICOM, and other offer nice band plan and related resources. http://www.arrl.org/band-plan http://icomamerica.com/en/amateur/amateurtools/2016_BandPlan.pdf Grid Square Locators http://www.levinecentral.com/ham/grid_square.php DX Zone Maps http://www.icomamerica.com/en/amateur/ama teurtools/2013_itu_cq_worldmaps.pdf 7 Radio control software is often provided by its manufacturer.