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Antennas : 23cm
  • Quad for 23cm band - probably the most simple and inexpensive antenna you could make for 23cm.
    [ Hits: 999 | Votes: 4 | Rating: 5.25 ]
Antennas : 2M
  • Portable VHF Ground Plane - A simple portable VHF ground plane antenna project used for ARES activities
    [ Hits: 1015 | Votes: 0 | Rating: 0 ]
Antennas : Baluns
  • Baluns in antenna systems - Understanding Baluns. This article explores some simple antenna system configurations and the effect of key system components, connections and dimensions on feed line common mode current.
    [ Hits: 1106 | Votes: 2 | Rating: 2.5 ]
Antennas : Dipole
  • A Field Guide to Simple HF Dipoles - A scanned PDF of this interesting book on HF Dipole antennas published by Stanford Research Institute
    [ Hits: 1282 | Votes: 1 | Rating: 8 ]
Antennas : Theory : Impedance matching
  • T Match efficiency estimator - This calculator estimates the efficiency of a T match tuner using a simple loss model.
    [ Hits: 583 | Votes: 1 | Rating: 4 ]
Antennas : WiFi
  • Coffee Can WiFi Antenna - This wi-fi antenna design is a much simpler DIY project than the pringles cantenna. Basically there are 3 parts to a build-your-own 2.4 Ghz cantenna kit: a pigtail, an N-female connector and a metal coffee can.
    [ Hits: 1299 | Votes: 1 | Rating: 1 ]
Ham Radio : Clubs : North America : USA : Oklahoma Operating Modes : Hellschreiber
  • Hell Formats - Here is a simple definition of all the Hellschreiber modes
    [ Hits: 344 | Votes: 0 | Rating: 0 ]
Operating Modes : VHF UHF Radio Equipment : HF Transceivers : Drake TR7
  • Inside The Drake TR-7 - The intent of this article is to help the semi-non-technical person understand what is inside the Drake TR-7(A) Transceiver, how it works, and discusses simple adjustment and modifications the end-user can perform
    [ Hits: 562 | Votes: 0 | Rating: 0 ]
Software : APRS
  • APRS Digipeatersoftware DIGI_NED - DIGI_NED is a simple software solution for PC based APRS digipeaters. DIGI_NED offers maximal flexibility in both software and hardware and has proven to be a future proof platform for APRS digipeaters.
    [ Hits: 1157 | Votes: 2 | Rating: 5.5 ]
Software : Log Analysis
  • ADIF to Map Amateur Ham Radio Contacts by K2DSL - This web application will read in a ham radio ADIF file produced by many logging programs and map contacts on a Google map. This simple tool converts also the log file into a KML file that can be easily downloaded and imported into Google Earth for a tridimensional view of your QSOs.
    [ Hits: 3652 | Votes: 9 | Rating: 8.55 ]
Technical Reference : Beacon keyers
  • 137.7kHz QRSS on one chip - This article describes a simple QRSS beacon exciter for the DX portion of the 2200m amateur band.
    [ Hits: 594 | Votes: 0 | Rating: 0 ]
Technical Reference : Filters Technical Reference : Homebrew Technical Reference : Preamplifiers
  • 137 kHz antenna preamplifier - A simple 137 kHz antenna preamplifier to make your FT-817 (and others) useable on 2200m band.
    [ Hits: 1184 | Votes: 3 | Rating: 6.67 ]
  • Simple Cheap MMIC Preamps - Who needs a GaAsFET? Tuning, constructions and Packaging by Paul Wade
    [ Hits: 686 | Votes: 0 | Rating: 0 ]
Technical Reference : Receivers Technical Reference : Sound Card Radio Interfacing
  • PSK31 interface - A simple PSK31/digital interface which can connect your transceiver to a PC soundcard for digital modes.
    [ Hits: 850 | Votes: 0 | Rating: 0 ]
Technical Reference : Transverters

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