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The 4-Square Site - 4 Square Vertical Array website dedicated to vertical arrays antenna installations worldwide by G4ATA

An intro to OWA Quad's Priority listing - An introduction to OWA (Optimised wideband array) 50Ohm direct feed Quad beam antennas

The OWA Yagi Priority listing - An introduction to the OWA (optimised Wideband Array) Yagi antenna

CQ WW RTTY - Official web site of CQ World Wide RTTY Contest

CQ WW - CQ World Wide DX Contest

Suburban Amateur Radio Repeater - Suburban amateur radio repeater is a wider coverage machine with six receiver sites in the chicago metropolitan area.

Solarcon Antennas - Solarcon custom designs and manufactures a wide range of standard and specialized antenna products, Patch Antennas, Loop Antennas, Helical Antennas, Yagi Antennas, Slot Antennas, UHF Antennas, VHF Antennas, Bluetooth antennas, Dipole antennas and many more.

Kathrein Inc - Manufacturer of professional antenna and filter systems for communications and broadcasting, serving commercial and governmental markets worldwide.

RYMSA - The RYMSA Corporation designs, manufactures and distributes a wide range of sophisticated antennas and components for the telecommunications industry supplying technical solutions tailored to the needs of its clients around the world.

US Communication antennas - UnderBumper diversity licence plate antenna system (front and rear license plates) become the antennas. Available in VHF, UHF, Dual Band and other frequencies. We also manufacture mobile antennas for HF VHF UHF wideband antennas

APRS Servers - List of APRS server worlwide mantained by ae5pl

Kenwood ts 570 s(g) or Icom 746 (non pro) - KC0WRG post about TS-570 and IC-746

Replacing Kenwood TS50 battery - Forum post about a failing battery on the Kenwood TS-50

Ten-Tec Orion 9 MHz IF Output - This article describe hot extract a wideband 9 MHz IF sample signal from a Ten-Tec Orion model 565 by VE7TK

Yaesu VX-8R - Audio Problem Solved - Videos and details on a audio problems of yaesu VX-8R

Yaesu VX-8r Review - Review of the new Yaesu VX-8r

Medium and Shortwave Listener's Page - DXing listeining mediumwave AM Broadcast Band stations or shortwave radio stations worldwide.

International SWL-Registry - Easily obtain a free and unique International SWL Callsign and, if you wish, be added to the Worldwide Online SWL Directory. Official certificates are also available.

Cluster Client - A windows freeweare dx cluster client, allows you to monitor DX spots from users worldwide by M0PZT

Fatpigdog's Real Time FFT Audio Spectrum Analyzer - Fatpigdog's Real Time FFT Audio Spectrum Analyzer. User interface has the look and Feel of an HP Spectrum Analyzer. But, in addition to the regular Spectrum Plot, it also produces detailed Waterfall plots. The user can optimize the color map, chosing from a wide assortment of color themes. This analyzer supports multiple traces, trace arithmetic and normalization.

MAP65 - MAP65 works together with the Linrad software. The Linrad/MAP65 combination implements a wideband, polarization-matching receiver for the JT65B protocol.

5-band RF Power Amplifier - This project uses a widely available IRF510 MOSFET, work on HF 80, 40, 30, 20 and 17 meter bands

Wideband PreAmp's for HF/VHF/UHF - Wideband VHF/UHF/SHF monolithic PreAmp based on MARx-series by ON6MU

Wideband SWR meter - About SWR, and use of SWR Meter, home made a swr meter.

Kenwood TH-215 TH-415 mods - Unfilter LF output from the TH215/415 kenwood portable radio