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• A very efficient half size 40 meter Vertical Antenna - Ray Ring
  
  A vertical antenna project for the 7MHz made with some spare parts Based on a ...
  [ Hits: 736 | Votes: 4 | Rating: 8.5 ]

• J-POLE for 50MHz by IZ0UPS - IZ0UPS
  
  The J Pole antenna is a good omnidirectional antenna that can be used for portable ...
  [ Hits: 245 | Votes: 2 | Rating: 10 ]

• Baluns and common mode chokes - Dorenberg
  
  Voltage baluns versus Current baluns When to use them differences and typical usage in feeding ...
  [ Hits: 402 | Votes: 1 | Rating: 10 ]

• Notes on Designing LF-MF antennas - N6LF
  
  A free book on designign LF MF antennas The six chapters in the body of ...
  [ Hits: 267 | Votes: 2 | Rating: 9.5 ]

• Ground Systems as a Factor in Antenna Efficiency - Brown Lewis Epstein
  
  A classic document originally presented in Proceedings of the Institute of Radio Engineers in 1937 ...
  [ Hits: 399 | Votes: 1 | Rating: 1 ]

• The Easy Way Antenna Systems - WB5IIR
  
  This document is a must read for anyone considering building a good low cost HF ...
  [ Hits: 635 | Votes: 2 | Rating: 4.5 ]

• Hands Free - Radcom Labs
  
  The SAFE SPEAK HF3 is the third generation of a unique Hands Free microphone system ...
  [ Hits: 176 | Votes: 1 | Rating: 10 ]

• VFC LP Lightning Protection Products - Dwayne Hogan
  
  VFC has grown to become the national leader in the lightning protection industry Protecting facilities ...
  [ Hits: 91 | Votes: 0 | Rating: 0 ]

• History of The Amateur radio LOCATOR System - OK2KKW
  
  This article taken from the IARU Region 1 VHF handbook is about the history of ...
  [ Hits: 192 | Votes: 1 | Rating: 1 ]

• An Overview of US Amateur Call Signs - Past and Present - WB4FDT K1CE
  
  QST article from May 1994 about history of call signs from the very beginning to ...
  [ Hits: 432 | Votes: 0 | Rating: 0 ]

• AllStarLink Community - AllStar
  
  The official community website of the AllStarLink amateur radio internet linking system The communinty requires ...
  [ Hits: 118 | Votes: 0 | Rating: 0 ]

• FT991 MARS Mod - FT991
  
  This modification will expand the tx frequency range of the Yaesu FT 991 from allowing ...
  [ Hits: 932 | Votes: 5 | Rating: 3 ]

• How Wide Area Radio Systems works - Dan Yemiola AI80
  
  This webpage explains how analog wide area two way radio systems were setup by various ...
  [ Hits: 145 | Votes: 0 | Rating: 0 ]

• Wuxi Venus Information Technology - Wuxi Venus
  
  Wuxi Venus Information Technology is an amateur radio devices dealer in China source for high ...
  [ Hits: 179 | Votes: 0 | Rating: 0 ]

• BridgeCom Systems Inc - BridgeCom
  
  Our mission is to provide our customers with a communication solution that fits a need ...
  [ Hits: 116 | Votes: 0 | Rating: 0 ]

• Balun_cmr Calculate common-mode impedance - VK2WB
  
  This EXCEL Program Worksheet calculates the common mode impedance of a 1 1 Guanella current ...
  [ Hits: 405 | Votes: 1 | Rating: 10 ]

• Linux and Amateur Radio - Presentation - KD7GR
  
  A PDF presentation about Amateur Radio and Linux by By Dave Mamanakis A beginners guide ...
  [ Hits: 1212 | Votes: 0 | Rating: 0 ]

• TE Systems 6 Meter Amplifier Review - k5nd
  
  TE Systems 0510G 50 MHz meter amplifier set up for 10 watts in and 170 ...
  [ Hits: 157 | Votes: 2 | Rating: 5 ]

• Second floor grounding - w8ji
  
  Solution for stations located at secondo floor or higher Lead lengths to the grounding system ...
  [ Hits: 285 | Votes: 1 | Rating: 10 ]
• Grounding HF Transceiver using Coax Cable - 9M2SX
  
  Improper grounding or earthing system can cause several unwanted RF interferences RFI to television sets ...
  [ Hits: 1298 | Votes: 4 | Rating: 7.75 ]

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