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Antennas : Feed Lines- Setting the SWR of Your Antenna
- SWR (standing wave ratio), is a measurement of how efficiently your antenna system will radiate the power available from your radio. In simple terms, your radio would like to radiate all of its power, but can only do so if the other components cooperate
[ Hits: 1253 | Votes: 0 | Rating: 0 ]
- Understanding Standing Wave Ratios SWR
- We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver'
s output power verses the portion of that power reflected by the antenna system
[ Hits: 8713 | Votes: 8 | Rating: 4.75 ]
- How to Use an Antenna Tuner
- Get maximum power to your antenna by learning how to hook up and use a tunner to properly "trick" your rig
[ Hits: 12434 | Votes: 11 | Rating: 6.64 ]
- Brand Electronics
- Power meters
[ Hits: 590 | Votes: 0 | Rating: 0 ]
- 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: 9187 | Votes: 7 | Rating: 5.28 ]
- Advanced Communications
- Refurbished used test equipment, rfand power amplifier repair, two way radios sales and service
[ Hits: 560 | Votes: 2 | Rating: 7.5 ]
- Techni-Tool!
- Techni-Tool is a distributor of electronic production tools, oscilloscopes, multimeters, power supplies, cases, tool kits, cutters, wrenches, crimpers, solder desolder stations, BGA, microscopes, lamps, static control, workstations, chairs, torque screwdrivers, tweezers, dusters, chemicals.
[ Hits: 722 | Votes: 2 | Rating: 10 ]
- AST Global Electronics
- New and Pre-Owned Agilent, Avcom, Fluke, Hewlett Packard, Instek, Iwatsu, Leader, LeCroy, Tektronix, etc. Oscilloscopes, Spectrum Analyzers, Network Analyzers, Power Supplies, Video Test Equipment, Generators, Meters and tons more
[ Hits: 809 | Votes: 1 | Rating: 10 ]
- Nec2Go
- Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas.
Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design.
This simplified process uses an edit file with equations for all definitions.
[ Hits: 1953 | Votes: 1 | Rating: 5 ]
- Turbolog
- TurboLog is a station management and logging program for the discerning radio amateur / hamradio operator. Besides powerful database and logging functions there is a fully integrated support for the control of typical radio station equipment, e.g. Transceivers, Packet radio, Morse and voice keyer, Digital modes terminal, Antenna switching, Acoustic alerting, and more. Trial version available
[ Hits: 1311 | Votes: 2 | Rating: 4 ]
- Cobracom
- Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform
and as Digital-to-analog Converter for the signal generator.
True 24 bit adc/dac 48K/96k/192k sampes/sec.
[ Hits: 21542 | Votes: 13 | Rating: 6.23 ]
- Coaxial Cable & Power Handling
- This calculator can be used to estimate the attenuation (dB loss), power handling capability, and transmission efficiency for some of the more popular Wireless Communications and MIL Spec cables at the frequency of interest
[ Hits: 1181 | Votes: 8 | Rating: 8.17 ]
- The Fox - 750 mw transmitter
- This RDF three transistor 144 MHz transmitter uses a 48 MHz scanner crystal as an oscillator / tripler. A second transistor boosts the signal to 40 milliwatts, a third amplifies the power output to 750 milliwatts.
Includes schematic and pictures.
[ Hits: 423 | Votes: 2 | Rating: 5.5 ]
- VK5VKA 's non technical bpl/plc information
- VK5VKA page contains general information and comment on "BPL" (Broadband over Power Lines) or as it is known elsewhere "PLC" (Power Line Communications).
[ Hits: 421 | Votes: 0 | Rating: 0 ]
- Powerline communications
- Europeam perspective on BPL PLC
[ Hits: 462 | Votes: 0 | Rating: 0 ]
- Broadband news : Canadian BPL
- Hydro-Québec joins efforts to provide high-speed internet service via power-lines
[ Hits: 461 | Votes: 0 | Rating: 0 ]
- 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: 370 | Votes: 1 | Rating: 1 ]
- Bbc : PLC effects
- The effects of power-line telecommunications on broadcast reception:
[ Hits: 763 | Votes: 0 | Rating: 0 ]
- 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: 671 | Votes: 0 | Rating: 0 ]
- NOJCG BPL tutorial
- Tutorial about broadband over power line and the new FCC rules restricting how it can be deployed.
[ Hits: 683 | Votes: 0 | Rating: 0 ]
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