m tech973 links - and 4 categories
Antennas : J-Pole
- Ladder line J-Pole
- Building a VHF or UHF Ladder Line J-Pole Antenna
[ Hits: 880 | Votes: 2 | Rating: 5.50 ]
- IITB HAM Club
- Students interested in HAM activities at Indian Institute of Technology, Bombay.
[ Hits: 369 | Votes: 2 | Rating: 3.00 ]
- Austin Antenna
- Austin Antenna employs leading-edge antenna technology in the production of the highest performance antennas currently available. Marine Antenna, Multi-band Mobile, Point-to-Point, Base Station, Wide-band Land Based, LPDA, Linear Omni, Triplexer, Scanner Antennas
[ Hits: 3823 | Votes: 6 | Rating: 9.67 ]
- AM Stereo
- AM stereo receivers are available, with technical descriptions of modulation and demodulation, as well as listing of known AM stereo stations.
[ Hits: 866 | Votes: 5 | Rating: 8.20 ]
- 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: 521 | Votes: 0 | Rating: 0.00 ]
- 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: 396 | Votes: 0 | Rating: 0.00 ]
- 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: 1323 | Votes: 1 | Rating: 3.00 ]
- 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: 553 | 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: 526 | 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: 734 | Votes: 2 | Rating: 10.00 ]
- 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: 1291 | Votes: 1 | Rating: 10.00 ]
- 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: 594 | Votes: 1 | Rating: 1.00 ]
- FT-1K OptoCAT
- The simple and safe RS232 CAT interface for Yaesu FT-1000MP, FT-1000MP Mark V and FT-1000MP Mark V Field rigs
[ Hits: 1402 | Votes: 0 | Rating: 0.00 ]
- Yaesu FT 857 specifications
- Yaesu FT 857 technical details and pictures
[ Hits: 2058 | Votes: 1 | Rating: 8.00 ]
- Yaest FT-897 specification
- FT-897 technical specifications and accessories in french
[ Hits: 1327 | Votes: 1 | Rating: 10.00 ]
- Yaesu FT-897 review
- by Paul VK3TGX, review of the yaesu ft-897.
[ Hits: 3019 | Votes: 0 | Rating: 0.00 ]
- RS232 interface for Kenwood rigs
- SS232K - The simple and safe RS232 interface for Kenwood radios
[ Hits: 987 | Votes: 8 | Rating: 7.25 ]
- QRP 12V Power Pack
- A perfect companion for your Elecraft K1 or any other (not power hungry...) QRP rig
[ Hits: 1481 | Votes: 1 | Rating: 1.00 ]
- FT8x7 OptoCAT
- The safe RS232 CAT interface and PA buffer for Yaesu FT-817, FT-857, FT897 and FT-100 rigs
[ Hits: 4034 | Votes: 0 | Rating: 0.00 ]
- K2 OptoCAT
- The safe RS232 CAT interface and PA buffer for Elecraft K2
[ Hits: 809 | Votes: 0 | Rating: 0.00 ]
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