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• Quad Antenna System by Pfeiffer Maltese  ^pop - Excellent Quad Antenna projects for 40 20 17 12 10 and 6 meters band in this pdf file project by Pfeiffer Maltese
  [ Hits: 39227 | Votes: 13 | Rating: 7.54 ]

• VHF Dipole with Gamma Match - 2 meters band VHF dipole with gamma match system
  [ Hits: 3179 | Votes: 27 | Rating: 4.6 ]

• G3WZT Phased Verticals - Vertical phased antenna systems plans by G3WZT
  [ Hits: 910 | Votes: 0 | Rating: 0 ]

• Reversible Beverage Antenna Setup - A DX Engineering RBS-1P reversible beverage antenna system installation
  [ Hits: 770 | Votes: 0 | Rating: 0 ]

• Antenna resonance and bandwidth - About antenna or aerial resonance and bandwidth and the impact of RF antenna resonance and bandwidth on radio communications systems.
  [ Hits: 420 | Votes: 0 | Rating: 0 ]

• Antenna Matching - Antennaa matching basics, matching input impedance, reactance vs. SWR, info on inductive matching and UNUN Matching systems. Capacitive Matching Odds & Ends by K0BG
  [ Hits: 1782 | Votes: 5 | Rating: 7 ]

• 13m high elevated vertical - This article explores the performance of an unloaded elevated vertical, base matching and feed line as a multi-band HF antenna system.
  [ Hits: 1357 | Votes: 0 | Rating: 0 ]

• G8RV Antenna - Antenna system resonant on 28.9, 24.9 21 and 1.8 Mhz by midstone amateur radio society
  [ Hits: 1481 | Votes: 1 | Rating: 10 ]

• RF Systems - RF Systems develops and produces antennas and accessories for governmental and military organisations, shortwave and scanner listeners, radio amateurs, yachting circles and professional users of receiving and transmitting equipment.
  [ Hits: 737 | Votes: 1 | Rating: 10 ]

• Naval - Marine antennas and systems for navy, merchant shipping, work boats and fine yachts
  [ Hits: 388 | Votes: 0 | Rating: 0 ]

• Transradio - With the new name TRANSRADIO, the former TELEFUNKEN SenderSysteme AG enters into the new digital age of Broadcasting – DRM.
  [ Hits: 366 | Votes: 0 | Rating: 0 ]

• Cobham Microwave - Cobham Microwave has a long term experience in Microwave Systems and Components. Their five areas of capabilities are Systems and Components: Diodes & Modules, Ferrite Devices, RF Filters, and Waveguides.
  [ Hits: 478 | Votes: 0 | Rating: 0 ]

• LBA Technology - LBA - DTV & RF test systems; AM antennas; RF shielding; RF compliance, safety, interference, intermodulation services; AM detuning, Antenna SWR Analyzers
  [ Hits: 687 | Votes: 1 | Rating: 7 ]
• Clean RF Systems - RF Samplers and demodulators
  [ Hits: 460 | Votes: 1 | Rating: 1 ]

• RSQ Signal Rporting for Digital Modes - This site is devoted to promoting RSQ as an improved signal reporting system for narrow band digital modes and to demonstrating its application to the popular PSK31 mode.
  [ Hits: 711 | Votes: 1 | Rating: 5 ]

• EchoMac - EchoMac is a client program for OS X that allows connection to the Echolink system
  [ Hits: 1228 | Votes: 2 | Rating: 5.5 ]

• Digital Oscilloscope and analyzer software - PC based mixed signal digital oscilloscope and analyzer software for BitScope. Runs on Windows, Linux or Mac OSX systems.
  [ Hits: 7184 | Votes: 6 | Rating: 4.67 ]

• Frequency Response Plotter - Draw static response time of an audio system. Originally intended for loudspeakers tests, is also a great tool for looking at microphone equalisation.
  [ Hits: 976 | Votes: 4 | Rating: 9.25 ]

• Friis-It NF for iPhone - Friis-It NF is the first iPhone OS based application that allows you to calculate noise figure, system sensitivity, and cascaded gain for an RF Receiver system
  [ Hits: 631 | Votes: 1 | Rating: 10 ]

• TenTec Omni VI AGC modification - Modification leaves nearly all of the existing Omni agc circuitry intact, simply add an audio detector which modifies the delay characteristics of the original system by G3IXQ
  [ Hits: 632 | Votes: 0 | Rating: 0 ]

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