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rf design
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Antennas : 6M
- 50 MHz Antennas by DF9CY (4 & 6 Element)
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- Two well performing 50 MHz antennas designed with W7EL EZNEC along to many other antenna projects and related articles
[Hits: 18906 | Votes: 31 | Rate: 4.61] - Optimised Six-Metre Yagi
- Design for a 5 element beam on a 23 foot boom with an unusual combination of performance characteristics
[Hits: 2525 | Votes: 0 | Rate: 0.00] Antennas : Beverage
- WW2Y/K2WI Beverage design
- Ideas for enhanced beverage antenna performance, Single wire beverage improvements and arrays of two beverages
[Hits: 3248 | Votes: 2 | Rate: 10.00] Antennas : G5RV
- G5RV multi-band antenna
- Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model.
[Hits: 5943 | Votes: 6 | Rate: 7.50] Antennas : Rhombic
- T2FD The Forgotten Antenna
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- "Some have called the T2FD a ""squashed rhombic"" antenna. It does bear some design similarities to the non resonant rhombic, but theoretically it is admittedly inferior. However, the T2FD performs well in a modest amount of space."
[Hits: 18053 | Votes: 57 | Rate: 5.34] Antennas : Theory
- 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: 8419 | Votes: 11 | Rate: 3.27] Internet and Radio : Directories
- Everything RF
- everything RF is a web portal for RF & Microwave Engineers providing News, Design Articles, Information on new products and a component search engine which helps you find the RF & Microwave Components that are right for you.
[Hits: 155 | Votes: 2 | Rate: 10.00] Internet and Radio : Tutorials
- Scanner feed tutorial
- This tutorial is designed to help the average person get his scanner feed on the net pdf file
[Hits: 230 | Votes: 1 | Rate: 9.00] Manufacturers : Accessories
- bhi Ltd
- Design & manufacture of Noise Eliminating speakers and modules for effective removal of unwanted noise & interference from SSB, HF, VHF, FM & UHF using new DSP technology
[Hits: 561 | Votes: 5 | Rate: 5.20] Manufacturers : Antenna Parts : Fiberglass tubing
- Comet Antennas
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- Distributor for COMET and MALDOL brand antenna products designed, manufactured in Japan. Distributor of DAIWA brand RF SWR/power meters and switching power supplies.
[Hits: 19345 | Votes: 33 | Rate: 5.83] Manufacturers : Antennas
- Signal Engineering
- Signal Engineering technologically advanced antennas with modern design and construction technique. Up to date information about current line of high performance 10 and 11 meters antennas.
[Hits: 4012 | Votes: 15 | Rate: 8.21] Manufacturers : Filters
- INRAD International Radio
- Supplier of custom designed, high performance
quartz crystal filters for communications
receivers and transceivers, for Yaesu Icom Kenwood and Collins radios
[Hits: 1681 | Votes: 0 | Rate: 0.00] Manufacturers : Test Equipment : Power Meter
- Bird Electronic
- Design and manufacture of components, instruments and systems for RF power measurement.
[Hits: 3381 | Votes: 5 | Rate: 7.20] Software : Antenna analysis
- DOS programs by g4fgq
- Small collection of DOS antenna design and RF calculations programs
[Hits: 2654 | Votes: 18 | Rate: 7.00] - 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: 2238 | Votes: 8 | Rate: 4.50] - 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: 1506 | Votes: 1 | Rate: 5.00] Software : Logging
- DX 4 Win
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- DX4WIN is an easy to use, yet powerful logging program for every ham. It has been designed for the the serious and the casual DXer.
[Hits: 17007 | Votes: 24 | Rate: 6.05] Software : Satellite tracking
- Satbuster
- SATBUSTER for Windows is especially designed for satellite visual observers and trackers. Its users, mainly amateur astronomers and radio amateurs, appreciate both the accuracy and the simple to use graphical interface.The software is aimed to hobbysts. However a growing number of plain folks are starting to use this tool to recognize and look at the International Space Station and the Space Shuttle during its missions too
[Hits: 1877 | Votes: 1 | Rate: 1.00] Software : Utilities
- KM5KG network designer
- Windows98 Program for RF Design
[Hits: 1775 | Votes: 4 | Rate: 7.25] - HAMIC - The Ham Intelligent Calculator
- HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.
[Hits: 1340 | Votes: 2 | Rate: 5.50] Technical Reference : Amplifiers : RF Amplifiers Theory
- A.M. tutorial
- This tutorial is designed to help explain some of the concepts involved in RF power measurement for amplitute modulated signals.
[Hits: 3246 | Votes: 4 | Rate: 6.00] Technical Reference : Components : Toroids
- Ferrite information
- Ferrite Toroidal Cores, Magnetic Properties of Ferrite Materials, EMI - RFI Suppression
Design Considerations, Ferrite Beads, Ferrites for RFI Ferrite Cores for RFI Suppression
by CWS ByteMark
[Hits: 10259 | Votes: 3 | Rate: 6.33] Technical Reference : Filters
- KI5YN QLF Filter
- The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter
[Hits: 1493 | Votes: 3 | Rate: 4.67] Technical Reference : Radio Frequency Interference
- Using ferrites for interference suppression
- This tutorial is meant to shed some light on the use of ferrites, and also presents some comparative frequency domain measurements both to illustrate some of the points, and to give designers an idea of what they might expect in using and specifying a ferrite component
[Hits: 3334 | Votes: 1 | Rate: 8.00] Technical Reference : Repeater
- Amateur Radio Repeater Controller
- The project requirement is to design the interface to the signal channel elements after the receiver
and before the transmitter
[Hits: 661 | Votes: 1 | Rate: 1.00]
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