am antenna to sw
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Antennas : Feed Lines- SWR: Maximum allowable VSWR
- VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools
[ Hits: 1235 | Votes: 3 | Rating: 3.33 ]
- Build An LF Antenna Analyzer
- A Portable Low Frequency Antenna Analyzer, For those of us who like to play with antennas on the ham bands, one of the handiest tools to have around the shack is an "antenna analyzer". These gadgets combine a signal generator and standing-wave ratio (SWR) sensor in a small battery-powered unit.
[ Hits: 4567 | Votes: 2 | Rating: 5 ]
- A Magnetic Loop Antenna for Shortwave Listening (SWL) by KR1ST
- A well documented plan to build a magnetic loop antenna for Shortwave Listening, includes photos and diagrams.
[ Hits: 20615 | Votes: 24 | Rating: 8.42 ]
- Magnetic loop by F5SWN
- The magnetic loop, thus named by the use of the magnetic component of the electromagnetic field, is a parallel circuit LC. In this article a sample project to home made a custom antenna. The circular form is often met on the commercial models but this antenna can be hexagonal, octagonal or square.
[ Hits: 253 | Votes: 4 | Rating: 5.25 ]
- How to build a tuned loop antenna
- How can you vastly improve your Medium Wave reception? its quite simple really, all you need is 120 foot of wire, a few lengths of timber and an old tuning capacitor with which you can build the answer to every DX'ers prayers, a tuned loop antenna.
[ Hits: 24060 | Votes: 21 | Rating: 8.1 ]
- EI7BA's Amateur Radio Pages
- Multi Band Quad,Cushcraft R5, R7, R7000, repair and maintenance, Remote Antenna Switching, Hexagonal Beam, Automatic Band Decoder, Low Band Verticals, Crank-up Tiltover Tower etc
[ Hits: 14011 | Votes: 20 | Rating: 7.6 ]
- SWL home made antennas
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- Short guide to home made antennas for shortwave reception, in pdf format
[ Hits: 38875 | Votes: 51 | Rating: 7.36 ]
- Isotron Antennas
- Isotron antennas are antennas of reduced size, without tuning. On 40 and 80m band, it is made of two plates into v whose angles are connected by a coil.
In this article the description of a home made realization for the 40m band.
[ Hits: 392 | Votes: 6 | Rating: 8 ]
- Antennas : theory and designs
- Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL
[ Hits: 9213 | Votes: 11 | Rating: 3.27 ]
- Antenna Selection Made Easy
- This page will help you answer important questions about antenna selection before you talk to a supplier. After reading this paper, you should be able to better determine the most important parameters you need to know for your antenna selection criteria.
[ Hits: 2028 | Votes: 2 | Rating: 3 ]
- The EZ-Tuner
- The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.
[ Hits: 5567 | Votes: 1 | Rating: 9 ]
- OH7SV Matti Hohtola Ham Projects
- The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO,
50 ohm to 200 ohm HF wide band transformers,
Wilkinson splitter for RX measurements,
Windom baluns 2001/2004,
Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
[ Hits: 20371 | Votes: 36 | Rating: 8.11 ]
- Kiwa Electronics
- Kiwa Electronics is a company that specializes in accessory equipment for the radio enthusiast. Our products include Filter Modules to improve receiver performance, a High Performance Medium Wave Air Core Loop Antenna for improved broadcast band reception, the Pocket Loop Antenna, the Earth Monitor, BCB Rejection Filter and Broadband and SW Preamps. We also offer numerous performance upgrades for popular receivers.
[ Hits: 3065 | Votes: 5 | Rating: 8.8 ]
- Ham Stack
- Microcontrollers for many ham radio applications including repeater controllers, beacon transmitters, keyers, antenna switches, battery monitors, etc.
[ Hits: 694 | Votes: 1 | Rating: 10 ]
- microHAM
- Supply high quality accessories for your ham shack, including Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed for the SO2R operator, USB Interfaces, Digital Mode Interfaces, Keyers and many others
[ Hits: 1998 | Votes: 2 | Rating: 10 ]
- Jetstream
- Antennas, base mobile scanner and vhf antenna, coax cables, coax switch, Lightning Arrestor, mounts, power supply, speakers and wattmeters
[ Hits: 5661 | Votes: 5 | Rating: 4.8 ]
- ERP Calculator Plus
- ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss
[ Hits: 3001 | Votes: 9 | Rating: 5.11 ]
- DXView
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- A free application that displays location information determined from a
callsign, displays translations of common "QSO words and phrases" in the languages
used in the callsign's DXCC entity, displays beam headings and SpotCollector
DX Spots on a world map, displays country maps, and provides point-and-click
control of antenna rotators from AlfaSpid, ARSWIN, Heath, Hygain, M2,
Prosistel, SARTek, TIC, Trackbox, and Yaesu
[ Hits: 28585 | Votes: 602 | Rating: 7.39 ]
- 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 ]
- Rainbow Antenna Analyzer
- A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings
[ Hits: 6760 | Votes: 7 | Rating: 5.57 ]
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