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• USA frequency allocations - The radio spectrum in usa, PDF File representing the united stares frequency allocations in graphical mode, dated 2003
  [ Hits: 5834 | Votes: 4 | Rating: 8 ]

• PacComm Packet Radio Systems - Packet Modems, tnc, portable tnc manufacturer
  [ Hits: 4426 | Votes: 8 | Rating: 6.75 ]

• Chip64 : Yahoo group - Chip64 yahoo group, discuss about IZ8BLY chip 64 mode
  [ Hits: 615 | Votes: 0 | Rating: 0 ]
• Chip64 - Download chip64, freeware windows digital mode by IZ8BLY Nino
  [ Hits: 2763 | Votes: 4 | Rating: 4.25 ]

• Chip64 documentation - Nino porcino documentation about CHIP64 digital mode
  [ Hits: 1192 | Votes: 0 | Rating: 0 ]
• Clover - Clover technical specifications, digital communications mode that conveys 8-bit digital data over narrow-band high-frequency radio.
  [ Hits: 930 | Votes: 1 | Rating: 10 ]
• 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: 736 | Votes: 1 | Rating: 10 ]
• 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: 632 | Votes: 0 | Rating: 0 ]
• 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: 498 | Votes: 0 | Rating: 0 ]
• 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: 679 | Votes: 0 | Rating: 0 ]
• 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: 651 | Votes: 0 | Rating: 0 ]
• 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: 858 | Votes: 2 | Rating: 10 ]
• 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: 1444 | Votes: 1 | Rating: 10 ]
• 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: 704 | Votes: 1 | Rating: 1 ]
• DRM mode Ham specifications - This document describes the DIFFERENCE of mode HAM to the official broadcast DRM standard
  [ Hits: 1332 | Votes: 0 | Rating: 0 ]

• WinDRM - HF Digital Radio Mondiale - WinDRM is the hottest digital mode on HF today! Nothing else exists where you can transfer data at almost 1KB/s without using proprietary hardware. HF Digital Radio Mondiale allow fast data, pictures, and voice over a 2.5Khz bandwidth
  [ Hits: 18086 | Votes: 22 | Rating: 7.81 ]

• 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: 994 | Votes: 0 | Rating: 0 ]

• Low cost frequency stabilisation - The Icom IC-746 is quite a popular HF/VHF multimode transceiver which has one shortcoming in its standard configuration when used to operate modes requiring good medium-term frequency stability.
  [ Hits: 1724 | Votes: 1 | Rating: 5 ]

• Duncan's Amp Pages - This is an internet resource for those interested in guitar amplifiers, vacuum tubes, and design tools such as SPICE modelling.
  [ Hits: 1007 | Votes: 5 | Rating: 6.8 ]

• FT-1000MP interface - YAESU FT-1000/MP/MARK V (filed) interface, this one of numerous RTX sound blaster interfaces you can find on the internet, but this one include: FSK KEYING to use with the RTTY port, DVS-2 to use the interface in AFSK mode, this include all digital modes + voice keyer, CW KEYING
  [ Hits: 6890 | Votes: 1 | Rating: 10 ]

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