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• 20m mini dipole antenna - This antenna project is a compact center-loaded wire-dipole. Center-loading is the most efficient way of loading a dipole or mono-pole
  [ Hits: 1962 | Votes: 4 | Rating: 9.75 ]

• 2 element yagi wire beam - A 2 element yagi wire-beam antenna for the 20 meter band based on the KJ5VW design
  [ Hits: 1855 | Votes: 7 | Rating: 3 ]

• 10-80 Slinky Dipole - A slinky dipole antenna that covers almost all HF bands mede with a flexible 90-turn metal spring by N4SPP
  [ Hits: 1376 | Votes: 7 | Rating: 6.86 ]

• Common mode currents - Common mode currents can flow in all sorts of systems, not just antenna feed lines. This article explain how Common mode noise can be isolated from the desired signal
  [ Hits: 316 | Votes: 1 | Rating: 8 ]

• Magnetic Loop 80-20 by N4SPP - A transmitting magnetic loop antenna that can cover from 80 to 20 meters band with a lot of experiments on coupling tecniques, and a pictures by N4SPP
  [ Hits: 2287 | Votes: 10 | Rating: 5.9 ]
• Slinky Loop Antenna - A wide range antenna made from a toy published on a 2010 Radcom article by M0ZSA
  [ Hits: 1242 | Votes: 2 | Rating: 4.5 ]

• Ground systems for DXpeditions - An article bu N6LF on ground systems for multi-band verticals over saltwater
  [ Hits: 274 | Votes: 0 | Rating: 0 ]

• Hardened Power Systems - Designs and manufactures high quality, dependable power products.
  [ Hits: 331 | Votes: 3 | Rating: 4 ]

• Bushcomm HF Antenna Systems - Australian manufacturer of HF Communications Antenna Systems for Military, Comercial, Mining & Amateur Radio
  [ Hits: 557 | Votes: 1 | Rating: 2 ]

• Anatech Electronics - Anatech Electronics manufactures RF filters for communication systems, Military and commercial, as well as RF filters for Wireless applications. Products include, Band pass filters, Duplexers, Low pass, high pass and bandstop filters. Additional products such as RF cable assembly also available.
  [ Hits: 282 | Votes: 1 | Rating: 10 ]

• MikroTik - MikroTik is a Latvian company which founded in 1995 to develop routers and wireless ISP systems. Wifi Routers, router boards, switches, interfaces and enclosures.
  [ Hits: 344 | Votes: 1 | Rating: 10 ]

• Working 160M From a Small Lot - A 109 pages presentation in PDF File by Jim Brown K9YC on techniques in operatint the top band from a small lot.
  [ Hits: 689 | Votes: 4 | Rating: 9.75 ]

• Icom ID-51A Programming Cable and Software - RT systems produce and sell Icom ID-51A programming software and usb cable. The WCS-D51 works with ID-51A and ID-51E
  [ Hits: 310 | Votes: 1 | Rating: 9 ]

• HFRadioSales.au - Specialists in (second hand/used) HF Radio & Antenna Sales, Service, Repair, Spare parts of Codan / Barrett / Qmac SSB equipment, and a licenced dealer for new sales of Barrett Communications Radio & Antenna Systems based in Australia
  [ Hits: 1796 | Votes: 0 | Rating: 0 ]

• FTM-400 Radio Software - The ADMS-M400 software allows you to program memory channels and menu settings of the Yaesu FTM-400 radio
  [ Hits: 1363 | Votes: 30 | Rating: 4.3 ]

• Hellschreiber App - Display and Send Hellschreiber On Your iPhone and iPad - iPhone / iPad app to send and receive Hellschreiber
  [ Hits: 546 | Votes: 0 | Rating: 0 ]
• SSTV for iOS - Decode Slow Scan TV (SSTV) on your iPad, iPhone and iPod Touch by Blackcatsystems
  [ Hits: 860 | Votes: 7 | Rating: 4.71 ]

• Open Repeater - The Raspberry Pi Repeater Controller Project goal is to develop a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary or emergency repeater systems with radios that can be run on portable power
  [ Hits: 2025 | Votes: 18 | Rating: 7.39 ]

• Receivers Discriminator Output Tap - How to modify your scanner or receiver with a discriminator output. If you want to decode and monitor digital (FSK and PSK) systems seriously, a discriminator tap is an absolute prerequisite.
  [ Hits: 250 | Votes: 0 | Rating: 0 ]

• Crystal Radio Set Systems - The main purpose of these Articles is to show how Engineering Principles may be applied to the design of crystal radios. Measurement techniques and actual measurements are described.
  [ Hits: 277 | Votes: 0 | Rating: 0 ]

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