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ISS
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Antennas
- HyLaunch - Antenna Launching System
- The HyLaunch, Build a Compact, Integrated Antenna Launching System by Bill Jones, KD7S, Getting a portable antenna into the top of a high tree can be a real challenge without the right tools.
[Hits: 1471 | Votes: 0 | Rate: 0.00] - Antenna Launching for Serious Practitioners
updated
- Over the years, I've been developing a negative relationship with trees. I'm all in favor of trees when they mind their own business in forests. It's when they purport to serve as antenna support structures that things fall apart. Russ AA7QU
[Hits: 940 | Votes: 2 | Rate: 7.50] Antennas : 10M Antennas : 6M Antennas : Feed Lines DX Resources : Ham Radio Awards
- Worked Republic Of India Award
- Amarteur Radio Society Of India, the national society, is issuing Worked Republic of India (WRI) Award to VU and Dx operators.
[Hits: 81 | Votes: 0 | Rate: 0.00] Ham Radio : Blogs : USA Manufacturers : Power Supply
- Nissei
- VU Meter, Analog Meters, Panel Meter,Multi-Meter, SWR meter, power supply, power meters
[Hits: 1535 | Votes: 2 | Rate: 8.00] Manufacturers : QRP Kits Operating Aids : Awards Operating Modes : DSP
- 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: 275 | Votes: 0 | Rate: 0.00] - 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: 1157 | Votes: 1 | Rate: 3.00] - 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: 432 | Votes: 0 | Rate: 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: 603 | Votes: 2 | Rate: 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: 484 | Votes: 0 | Rate: 0.00] Operating Modes : Longwave
- Longwave operations
- In the VLF portion of the spectrum it is easy to listen to the emissions created by the Earth itself. These emissions are generated by many different mechanisms and are often beautiful to listen to. Coverage on LF and MF frequencies
[Hits: 495 | Votes: 0 | Rate: 0.00] Operating Modes : MFSK
- 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: 385 | Votes: 0 | Rate: 0.00] Propagation : Long-Delayed Echoes
- Unusual HF Propagation Phenomena
- This page has a collection of audio samples from unusual HF propagation phenomena, from round-the-world propagation to moonbounced signals , and to ducted transmission.
[Hits: 165 | Votes: 0 | Rate: 0.00] Radio Scanning : Maritime
- Automatic Identification Systems (AIS)
- Automatic identification systems (AISs) are designed to be capable of providing information about the ship to other ships and to coastal authorities automatically.
[Hits: 1031 | Votes: 1 | Rate: 1.00] Shopping and Services : Electronics
- DDS Data-Communicatie
- Dds data- communication Data and Tele-Communication Solutions: UMTS GSM GPRS Telemetry programmers Adeunis RF systems, antennas, radio transmission modules, oscilloscopes GPS and coax cables dealer in Holland
[Hits: 448 | Votes: 0 | Rate: 0.00] Software : Antenna analysis
- TLE for windows
- Transmission Line equations for Windows. Written in Visual C++. This program provides the most comprehensive analysis of a transmission line by w9dmk
[Hits: 792 | Votes: 1 | Rate: 5.00] - XLZIZL by AC6LA
- XLZIZL is an Excel application that analyzes the components of an antenna feed system, including transmission lines, stubs, baluns, and tuners. Calculations include impedance transforms, SWR and reflection coefficient, power loss, voltage and current standing waves, stress on tuner components, network attenuation (S21), and return loss Analysis results are available in worksheet format and in five different chart formats, including Smith charts.
[Hits: 1039 | Votes: 1 | Rate: 2.00] Technical Reference : Radio Frequency Interference : BPL
- European commission's powerline project started
- Information on PCL BPL project in europe
[Hits: 214 | Votes: 0 | Rate: 0.00] - Amperion Inc BPL tests
- Amperion Inc. issued an announcement that it has successfully tested its broadband powerline (BPL) technology over high-voltage, 69,000-volt transmission lines.
[Hits: 274 | Votes: 3 | Rate: 3.67] - Are you ready for BPL
- Broadband over power lines (BPL) is a technique for transmission of high speed data (broadband Internet) over powerlines. Access BPL technology injects radio frequency energy into powerlines which were not designed for transmission of radio frequency energy, and leak substantial energy that causes interference to radiocommunications service
[Hits: 435 | Votes: 0 | Rate: 0.00]
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