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H Doublebay Antennas - Cheap and EZ to build Bi-Directional VHF & HF antennas with gain

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

J-pole antenna for 915MHz - A 915 MHz four bay j-pole antenna plan

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

CQ WW - CQ World Wide DX Contest

CQ WPX Contest - Official web site of CQ World Wide WPX Contest.

DARC Ortsverband München-Land (C09) - Oberbayern (C) Ortsverbände München-Land (C09)

DARC Fürstenfeldbruck (C28) - Distrikte Oberbayern (C) Ortsverbänd Fürstenfeldbruck (C28)

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.

Martek Power - Martek Power designs and manufactures a wide of high performance power supplies for various industries. Power supplies AC-DC, DC-AC inverters, DC-DC, EMI Filters

APRS Servers - List of APRS server worlwide mantained by ae5pl

Knightlites QRP Club - The KnightLites QRP Association is a world wide fellowship of low power (QRP) amateur radio communications enthusiasts founded in 1996, and is coordinated through the efforts of a small group of radio amateurs located in the Research Triangle region of North Carolina in the United States.

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

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

RI Eastbay Police and Fire Online - Online radio feeds of Police and Fire Departments for Newport, Middletown and Portsmouth RI as well as the local Navy Fire Department.

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

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.

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

DataSheet4U - DataSheet4U is a free electronic engineering tool that enables you to locate product datasheets from hundreds of electronic component manufacturers worldwide.

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

General purpose RF Wideband PreAmp - General purpose RF Wideband PreAmp based on BSX-20 transistor with a frequency range 14-550 MHz

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