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Antennas : Antenna Calculators
  • Small Transmitting Loop Antenna Calculator - A free online calculator for making all of the calculations required to design and build small transmitting loop antennas, also known as magnetic loops by 66pacific.com
    [ Hits: 4803 | Votes: 16 | Rating: 7.63 ]
Antennas : Bazooka
  • Coax Dipole Calculator - An efficient program to calculate dimensions of coax dipoles, or bazooka antennas considering velocity length of different coax cables. Express dimensions in feet/inch and meters/cm. Freeware by VE3SQB
    [ Hits: 14453 | Votes: 54 | Rating: 5.29 ]
Antennas : Theory : Impedance matching
  • The Clemens Match - About the clemens match for beam antenna, as an alternative to common gamma matching techniques
    [ Hits: 1168 | Votes: 0 | Rating: 0 ]
Antennas : Towers
  • Building a mast base - An introduction to DIY building of a concrete base for a 45' mast.
    [ Hits: 3841 | Votes: 0 | Rating: 0 ]
FRS and GMRS
  • PMR446 - Resource center - PMR446 LPD433 SRD860 Resource site for PMR 446 users mostly in french
    [ Hits: 833 | Votes: 2 | Rating: 10 ]
Internet and Radio : Classifieds
  • SecondHandRadio.com - Classified ads for used and surplus radio equipment. Place your ad with photos for free
    [ Hits: 948 | Votes: 0 | Rating: 0 ]
Manufacturers : Publications
  • mikroElektronika books : Radio receivers - Radio Receivers, from crystal set to stereo, free online ebook including, principles of radio transmission, direct radio receivers and superheterodyne receivers
    [ Hits: 787 | Votes: 3 | Rating: 7.33 ]
Shopping and Services : Alternative Power
  • Wire Free Direct LtD - UK company that's a full-line dealer for wind and solar power systems, plus system design.
    [ Hits: 337 | Votes: 0 | Rating: 0 ]
Shopping and Services : Internet services
  • QSL.NET - Managed by k3tkj, offer to ham radio operators free space for web pages and email forwarding.
    [ Hits: 408 | Votes: 1 | Rating: 10 ]
Software : Antenna rotor control
  • LP-Rotor - LP-Rotor 2.0 is a standalone freeware rotator control program for use with Microsoft Windows. LP-Rotor should work with all versions of Windows from Windows 95 forward. It is designed to be used with the Hy-Gain DCU-1 or RotorEZ interfaces for Hy-Gain rotators, or the RotorCard interface for Yaesu rotators.
    [ Hits: 4397 | Votes: 4 | Rating: 7 ]
Software : Contesting
  • RYLogit - Freeware general purpose and contesting logging application, Scoring function for the IBM QSO Party with unique export format. Cabrillo export for non IBM contests includes formatting for NA QP, CQ WW DX, NA Sprint & CQ World-Wide WPX by W0RY
    [ Hits: 1057 | Votes: 0 | Rating: 0 ]
Software : DSP
  • NBEMS - The Narrow Band Emergency Messaging System (NBEMS) for Windows is a suite of software programs designed for point-to-point, fast, error-free, emergency messaging up to or over 100 miles distant, and takes up a very minimum of frequency space on the ham bands, leaving more space for other ham activites.
    [ Hits: 1185 | Votes: 1 | Rating: 10 ]
Software : Multimode
  • Contact-Multi - Contact-Multi is a Freeware Multi Digital program for Windows (PSK, RTTY,FSK and MFSK). It provides a DXCluster, Diplomes,LogBook,Qsl's Print, statistics Shareware version available. English and Spanish version
    [ Hits: 1676 | Votes: 0 | Rating: 0 ]
Software : Oscilloscope
  • BIP Electronics Lab Oscilloscope - Freeware windows oscilloscope uses the sound card's input to measure signals. This means that the quality of the scope depends on the quality of your sound card. The scope automatically uses the highest sample frequency available at the input that you select
    [ Hits: 9886 | Votes: 16 | Rating: 5.5 ]
Software : QSL
  • QSL Maker  pop - Freeware Windows QSL card printer software. This tool will let you create you own QSL cards importing pictures and customizing colors and other cards aspects. Print directly to your ink-ject or laser printer. Runs on windows systems by wb8rcr
    [ Hits: 28990 | Votes: 39 | Rating: 5.93 ]
Software : Radio Control
  • ICOM Rig Control - Freeware amateur radio transceiver control program tested with IC-756 Pro.
    [ Hits: 6228 | Votes: 7 | Rating: 6 ]
Software : Radio Programming
  • FreeSCAN - Freeware windows program for programming the Uniden SC230, BC246T, BC330T, BCD396, BC15T and BCD996T scanners. FreeSCAN allows to download and uploading programming, remote control the scanner, log hits, and supports printing out of systems and groups.
    [ Hits: 2034 | Votes: 9 | Rating: 6.67 ]
Software : Signal Generator
  • Sine Wave Generator - Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers
    [ Hits: 18812 | Votes: 91 | Rating: 4.88 ]
Technical Reference : Alternative Power
  • Free Sun Power - Free basic and advanced system design tutorials for every component and aspect of solar power. Plus system sizing calculators, battery bank calculators and wire size calculators
    [ Hits: 853 | Votes: 2 | Rating: 6 ]
Technical Reference : Amplifiers
  • TANKIT - A free design aid for vacuum tube linear RF power amplifiers. Determine plate circuit operating parameters and design pi or pi-L tanks quickly and easily.
    [ Hits: 1830 | Votes: 1 | Rating: 10 ]

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