high power89 links
Antennas : Baluns : 4 to 1 balun
- How To Make A Homebrew 4:1 Balun
- I built a homebrew 75 meter Double Extended Zepp Antenna, And I needed a 4:1 Balun So I decided to Homebrew the Balun also. Here is how I did it!
[ Hits: 85303 | Votes: 98 | Rating: 6.20 ]
- QRP-L Mailing List
- Low Power Amateur Radio Discussion
[ Hits: 711 | Votes: 3 | Rating: 1.33 ]
- Gisela Dierking NF/HF-Technik Germany
- Many interessting accessories, like unversal audiofilter, Mixer interface for sound card, highvoltage powersupply,accessories for 706, hamradio vacation, and more
[ Hits: 1651 | Votes: 6 | Rating: 7.67 ]
- Accessories, like universal audiofilter, Mixer interface for sound card, highvoltage powersupply, accessories for 706, hamradio vacation,Roger Beep, Microphons, Headsets and more. Please look
[ Hits: 2652 | Votes: 13 | Rating: 7.80 ]
- Empower RF Systems
- We offer a large selection of standard and custom High Power RF and Microwave amplifiers for broadband, general communication, matched band, and personal communication markets.
[ Hits: 2849 | Votes: 3 | Rating: 8.33 ]
- Text books relating to amateur radio (HAM radio), highpass and lowpass power filters, transmitter test loads (dummy loads), study tapes and disks to learn morse code, transceiver preamplifiers, antenna signal boosters.
[ Hits: 1996 | Votes: 0 | Rating: 0.00 ]
- MARS Antennas
- MARS, Israel's Antenna and RF System manufacturer, flat antennas for cellular, military broadband, multiband MF high power antenna
[ Hits: 2671 | Votes: 6 | Rating: 7.00 ]
- MicroSignals produces a line of RF and IF signal processing components that offer high performance at an exceptional value. To achieve this MicroSignals began with an engineering team that possessed an excellent background in RF Transformer and Balun design.
[ Hits: 622 | Votes: 1 | Rating: 7.00 ]
- Spectra Engineering
- Manufacturer of high performance rack mountable MX800 and MX920 Radio Base Stations and Repeaters. Also supplies 2RU rack mounted 13.8V DC power supplies. Based in Australia.
[ Hits: 1207 | Votes: 2 | Rating: 4.50 ]
- Hellschreiber beacon project
- This web site describes a low power beacon system to be used for propagation and performance tests on the lower bands. The beacon offers CW (on-off keyed) modes and FSK modes; the traditional Morse ID mode, and Feld-Hell, another highly noise immune CW mode.
[ Hits: 1496 | Votes: 6 | Rating: 9.83 ]
- HF Antennas for restricted space
- Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.
[ Hits: 7759 | Votes: 6 | Rating: 4.83 ]
- RF and Microwate Power Amplifiers
- RF and Microwave Power Amplifier and Transmitter Technologies, amplifierlinearity, efficiency and
available RF power devices.
[ Hits: 1160 | Votes: 1 | Rating: 10.00 ]
- Six Meter Heliax Duplexer Construction
- Duplexer capable of handling a high power 500khz split six meter repeater.
[ Hits: 1289 | Votes: 1 | Rating: 10.00 ]
- K8CU Technical Topics
- Well documented Amateur Radio HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, related accessories, vintage radios, Six meter equipment, and useful techniques by K8CU are inside.
[ Hits: 3763 | Votes: 10 | Rating: 7.40 ]
- Z Match for Higher Power
- Single coil Z match witch handles the power of the linear amplifier
[ Hits: 3031 | Votes: 13 | Rating: 7.93 ]
- A secure power supply
- Dchematics and photos of a secure power supply (short-cut, Rf feedback, high voltage etc.) by iz7ath
[ Hits: 7022 | Votes: 3 | Rating: 8.67 ]
- Broadband news : Canadian BPL
- Hydro-Québec joins efforts to provide high-speed internet service via power-lines
[ Hits: 340 | Votes: 0 | Rating: 0.00 ]
- New Developments with PLC in Japan
- The Japan Amateur Radio League (JARL) is cautiously watching new developments concerning the commercialization of Power Line Communications (PLC), while continuing to carry out joint experiments with a high speed power line communication promoters' alliance to reduce potential interference to radio communications.
[ Hits: 250 | Votes: 1 | Rating: 1.00 ]
- 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: 330 | Votes: 3 | Rating: 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: 568 | Votes: 0 | Rating: 0.00 ]
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