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Antennas : 2M
  • A 7el VHF yagi - DK7ZB'7 element yagi beam
    [ Hits: 3252 | Votes: 8 | Rating: 6.62 ]
Antennas : 4M
  • F5DQK Vinecon 6N4 - A dual band antenna for 50Mhz and 70Mhz with lots of pictures and diagrams by F5DQK
    [ Hits: 1242 | Votes: 2 | Rating: 4.00 ]
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: 8210 | Votes: 40 | Rating: 5.40 ]
Antennas : Beverage
  • TK5EP Beverage switch - How could we share the Beverage antennas on more than one station
    [ Hits: 1171 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory Antennas : Theory : Impedance matching
  • The Clemens Match - About the clemens match for beam antenna, as an alternative to common gamma matching techniques
    [ Hits: 1033 | Votes: 0 | Rating: 0.00 ]
Antennas : Towers
  • Building a mast base - An introduction to DIY building of a concrete base for a 45' mast.
    [ Hits: 3497 | Votes: 0 | Rating: 0.00 ]
Antennas : Vertical FRS and GMRS : PMR 446
  • Monde - pmr446 - Monde - pmr446 resource site for PMR446 users
    [ Hits: 675 | Votes: 1 | Rating: 10.00 ]
  • PMR446 - Resource center - PMR446 LPD433 SRD860 Resource site for PMR 446 users mostly in french
    [ Hits: 563 | Votes: 2 | Rating: 10.00 ]
Internet and Radio : Classifieds Internet and Radio : Online Receivers
  • Free Web Receivers from UK - Up to 3 free to tune receivers based in Bedfordshire England, Ten Tec RX320D, Yaesu FT-840 and Icom PCR-100
    [ Hits: 9081 | Votes: 36 | Rating: 6.48 ]
Publications : RF Foundamentals
  • 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: 578 | Votes: 3 | Rating: 7.33 ]
Shopping and Services : Internet services
  • QSL.NET - Managed by k3tkj, offer to ham radio operators free space for web pages and email forwarding.
    [ Hits: 225 | Votes: 0 | Rating: 0.00 ]
Software : Browser extensions
  • HamInfoBar - Ham Radio & SWL Toolbar Priority listing - Free toolbar for radio hams & SWLs: Search QRZ.com, HamCall, FindU.com, Google, Wikipedia, eBay and other useful engines. Check the latest DX spots. Get links to QSL, satellite, forums, propagation, broadcast radio, maps etc. RSS feeds including Amsat & the latest eBay ham specials. Listen to ARRL, RSGB and WIA news & other radio stations. Plus lots of other features!
    [ Hits: 1152 | Votes: 5 | Rating: 8.20 ]
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: 868 | Votes: 0 | Rating: 0.00 ]
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: 922 | Votes: 1 | Rating: 10.00 ]
Software : Grid Bearing and Maps
  • QTH Locator - QTH Locator is free Windows program to calculate distances and angles between 2 stations, with a data base to handle and store position data (even usable as a simple logbook) and a lot of graphic stuff to display geographic positions. It is capable to display self-made maps or UIVIEW maps also. by dg4mcb
    [ Hits: 1762 | Votes: 6 | Rating: 3.83 ]
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: 1144 | Votes: 0 | Rating: 0.00 ]
Software : QSL
  • QSL Maker Priority listing - 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: 21643 | Votes: 22 | Rating: 6.92 ]
Software : Radio Control
  • ICOM Rig Control  updated - Freeware amateur radio transceiver control program tested with IC-756 Pro.
    [ Hits: 5289 | Votes: 4 | Rating: 5.50 ]
Software : Signal Generator
  • Sine Wave Generator  updated - 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: 12495 | Votes: 41 | Rating: 5.01 ]
Software : Utilities
  • JQAM (QAM modem) - Transmit audio/video, UDP packets, http, rs232, with QAM using the soundcard rates up to 100kb/s.
    [ Hits: 1279 | Votes: 7 | Rating: 4.71 ]
Technical Reference : Amplifiers
  • TANKIT Priority listing - 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: 1616 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Components : Toroids
  • Inductor Design Software - RF toroid - A free too designed to assist in the selection of iron and alloy powder cores. RF toroid calculate the location of the Self resonate frequencies for series and shunt inductors.
    [ Hits: 4603 | Votes: 39 | Rating: 4.59 ]
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