DSP

Ham radio digital signal processing modes

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  • Soundcard Interfacing - This page is an attempt to correlate the interfacing schemes for various Radio models, and Sound Card configurations.
  • HF-FAX - The home of Radio Facsimile wefax & SSTV.
  • Recommended frequencies for digital modes - Active digital mode frequency list compiled by Jason Buchanan - N1SU
  • RFSM-2400 Digital Mode - A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem. Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).
  • Ham radio digital modes - An introduction to PSK31, MT63, and Hellschreiber, John DeGood NU3E Trenton Computer Festival in PDF
  • Ham Radio & DSP - Related histories, facts and opinions by EA2BAJ, includes example of PSK MT63 QPSK audio files in wav file
  • Sound samples of digital transmissions - Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".
  • Digital signal processing - Frequently asked questions on Digital Signal Processing
  • HamSpots.net - HamSpots - Ham Radio Digital Spots. Only digital related cluster spots, with user comments and dx sked
  • Digital DX Live - DX Spots of digital emissions
    [ Hits: 2176 | Votes: 5 | Rating: 3.60 ]
  • A Flexible Digital-Mode Interface - One interface, all the software—here’s how to do it simplyand inexpensively. QST article by Jim Mitrenga N9ART
    [ Hits: 1587 | Votes: 5 | Rating: 9.60 ]
  • Analyzing UHF signals using FFT programs - With spectrum analysis of beacon signals, it's possible to see features relating to various propagation phenomonen.
    [ Hits: 528 | Votes: 0 | Rating: 0.00 ]
  • Chip64 documentation - Nino porcino documentation about CHIP64 digital mode
    [ Hits: 899 | Votes: 0 | Rating: 0.00 ]
  • Clover - Clover technical specifications, digital communications mode that conveys 8-bit digital data over narrow-band high-frequency radio.
    [ Hits: 709 | Votes: 1 | Rating: 10.00 ]
  • Clover 2000 - CLOVER-2000 is a faster version of CLOVER (about four times faster) that uses eight tone pulses, each of which is 250 Hz wide, spaced at 250-Hz centers, contained within a 2 kHz bandwidth between 500 and 2,500 Hz
    [ Hits: 720 | Votes: 1 | Rating: 1.00 ]
  • CMSK - CMSK is a narrow-band weak signal digital mode for LF and MF ham radio bands defined by ZL2AFP. CMSK63 is the windows client program.
    [ Hits: 523 | Votes: 3 | Rating: 6.33 ]
  • Digital modes Babel Tower - A review of ham radio digital modes with watefall differences between PSK RTTY Hellschreiber MFSK Olivia JT65A and digital voice by HB9TPL
    [ Hits: 961 | Votes: 2 | Rating: 3.50 ]
  • Digital modes sounds - Ever wonder what all those funny sounds are that you come across from time to time on the ham bands
    [ Hits: 2108 | Votes: 0 | Rating: 0.00 ]
  • Digital Modes used in Ham Radio - Article with waterfall pictures and samples of several digital modes like psk31, sstv packet pactor hellschreiber domino thor jt65 and more
    [ Hits: 827 | Votes: 3 | Rating: 7.67 ]
  • Digital Monitoring Site - Digital signale transmitted in HF-UHF-VHF, in italian
    [ Hits: 1163 | Votes: 6 | Rating: 8.50 ]
  • Digital signal processing - Frequently asked questions on Digital Signal Processing
    [ Hits: 2376 | Votes: 3 | Rating: 5.67 ]
  • Digital Signals Sounds - Several files with examples of sounds from digital radio modes on short wave. PSK, RTTY Hellschreiber MFSK FSK Sitor
    [ Hits: 1311 | Votes: 6 | Rating: 5.17 ]
  • Digital Voice in Amateur Radio - John DeGood NU3E, explain priciples of trasmitting digital voice using ham radio devices
    [ Hits: 826 | Votes: 0 | Rating: 0.00 ]
  • Domino - Domino is the name given by the developers to a family of IFK coded coherent phase single tone MFSK keyed modes, using sequential tone-pairs in two alternate fields arranged as orthogonal but interleaved tone sets.
    [ Hits: 593 | Votes: 1 | Rating: 10.00 ]
  • DRM mode Ham specifications - This document describes the DIFFERENCE of mode HAM to the official broadcast DRM standard
    [ Hits: 1129 | Votes: 0 | Rating: 0.00 ]
  • EA8ATE Sergio - Greetins from Gran Canaria, Canary Island, includes many information and video about digital modes, in spanish
    [ Hits: 264 | Votes: 1 | Rating: 6.00 ]
  • Frequencies for using digital modes - These frequencies are to be used as a guide to find the related signals. They have come from several sources, and are, in no way, guaranteed to be complete, accurate, or inclusive.
    [ Hits: 989 | Votes: 1 | Rating: 1.00 ]
  • G-tor - G-TOR is a trademark of Kantronics, Inc. G-TOR (Golay-Teleprinting Over Radio) can be viewed, in part, as a variant of the Automatic Link Establishment (ALE) protocol, outlined in MIL-STD-188-141A.
    [ Hits: 424 | Votes: 0 | Rating: 0.00 ]
  • Getting Started with Sound Card Digital Modes - Setting your Amateur radio station up to operate the wide range of modern radio software which uses the PC sound card to generate and receive signals. Murray Greenman ZL1BPU
    [ Hits: 772 | Votes: 0 | Rating: 0.00 ]
  • Ham Radio & DSP - Related histories, facts and opinions by EA2BAJ, includes example of PSK MT63 QPSK audio files in wav file
    [ Hits: 2562 | Votes: 4 | Rating: 7.00 ]
  • Ham radio digital modes - An introduction to PSK31, MT63, and Hellschreiber, John DeGood NU3E Trenton Computer Festival in PDF
    [ Hits: 2993 | Votes: 4 | Rating: 8.25 ]
  • HamSpots.net - HamSpots - Ham Radio Digital Spots. Only digital related cluster spots, with user comments and dx sked
    [ Hits: 2191 | Votes: 11 | Rating: 8.36 ]
  • HF JT65A Guide - Revised version of The Complete Bozo's Guide to HF JT65A by Andy K3UK
    [ Hits: 1459 | Votes: 5 | Rating: 2.20 ]
  • HF-FAX - The home of Radio Facsimile wefax & SSTV.
    [ Hits: 8630 | Votes: 22 | Rating: 7.82 ]
  • Introduction to Data Communications - Roger Cooke G3LDI article on Data Communication modes
    [ Hits: 318 | Votes: 2 | Rating: 1.50 ]
  • Mfsk - MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
    [ Hits: 639 | Votes: 0 | Rating: 0.00 ]
  • Mfsk - MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
    [ Hits: 377 | Votes: 0 | Rating: 0.00 ]
  • Mt-63 technical description - The MT-63 modem, constructed around a high speed DSP processor, either in a dedicated external DSP unit like the Motorola EVM, or in PC software using the PC sound card, transmits 64 tones spaced 15.625 Hz apart, in the 1 kHz bandwidth.
    [ Hits: 508 | Votes: 0 | Rating: 0.00 ]
  • MT63 HF mode - MT63 is a DSP based advanced HF mode for Amateur Radio, intended to provide high performance keyboard - to - keyboard conversational operation on HF bands under poor conditions
    [ Hits: 1226 | Votes: 17 | Rating: 7.52 ]
  • Olivia - The Olivia transmission system is constructed of two layers: the lower, modulation layer is an (almost) classical Multi-Frequency Shift Keying (MFSK) and the higher layer is a Forward Error-Correcting (FEC) code based on Walsh functions.
    [ Hits: 1281 | Votes: 1 | Rating: 3.00 ]
  • OLIVIADATA Group - OliviaData the OLIVIA Yahoo group ham radio
    [ Hits: 210 | Votes: 0 | Rating: 0.00 ]
  • Pactor - PACTOR can be viewed as a combination of two earlier digital modes, packet radio and AMateur Teleprinting Over Radio (AMTOR). PACTOR provides improved throughput because its transmission speed adapts to the quality of the link and it uses Huffman compressed characters.
    [ Hits: 518 | Votes: 0 | Rating: 0.00 ]
  • Pactor ii - PACTOR-II is a fully backward-compatible improvement to the original PACTOR system. It is an adaptive mode that applies different modulation and encoding methods depending on the channel quality.
    [ Hits: 504 | Votes: 0 | Rating: 0.00 ]
  • Pactor III - PACTOR-III is a software upgrade for existing PACTOR-II modems that provides a new data transmission mode for improved speed and robustness. PACTOR-III is not a new modem or hardware device. Most current PACTOR-II modems are upgradeable to use PACTOR-III via a software update since PACTOR-II firmware accommodates the new PACTOR-III software
    [ Hits: 697 | Votes: 2 | Rating: 10.00 ]
  • Psk31 - PSK31 is a digital communications mode which is intended for live keyboard-to-keyboard conversations, similar to radioteletype. Its data rate is 31.25 bauds (about 50 word-per-minute), and its narrow bandwidth (approximately 60 Hz at -26 dB) reduces its susceptibility to noise.
    [ Hits: 1256 | Votes: 1 | Rating: 10.00 ]
  • PSK63 - A super-fast PSK mode for RTTY Contesting, 100 wpm character transmission speed for contest exchanges and macro transmission versus RTTY at 60 wpm
    [ Hits: 1497 | Votes: 1 | Rating: 10.00 ]
  • Q15X25 - Q15X25 is a packet modem with a KISS/AX.25 interface designed for HF transmission of AX.25 packets and TCP/IP using Automatic Repeat reQuest (ARQ) and forward error correction (FEC).
    [ Hits: 577 | Votes: 1 | Rating: 1.00 ]
  • Recommended frequencies for digital modes - Active digital mode frequency list compiled by Jason Buchanan - N1SU
    [ Hits: 3441 | Votes: 4 | Rating: 5.50 ]
  • RFSM-2400 Digital Mode - A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem. Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).
    [ Hits: 3341 | Votes: 16 | Rating: 6.18 ]
  • Sound samples of digital transmissions - Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".
    [ Hits: 2543 | Votes: 5 | Rating: 9.20 ]
  • Soundcard Interfacing - This page is an attempt to correlate the interfacing schemes for various Radio models, and Sound Card configurations.
    [ Hits: 12326 | Votes: 11 | Rating: 4.82 ]
  • The Baudot Code - Table that represents programmer's quick reference to the Baudot character set.
    [ Hits: 170 | Votes: 1 | Rating: 4.00 ]
  • WinMor - A new HF transmission protocol for Winlink 2000
    [ Hits: 619 | Votes: 2 | Rating: 10.00 ]
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