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Antennas : Antenna Calculators
  • Horn Antenna Designer - 802.11b Horn Antenna Designer, calculate horn antenna dimension for wi-fi application
    [ Hits: 3162 | Votes: 10 | Rating: 5 ]
  • Cubical Quad Calculator - An online javascript calculator for cubical quad antennas, simply input the resonating frequency to calculcate up to a five element quad antenna. This quad antenna calculator let you determine the total length of each element and spacing among elements.
    [ Hits: 1008 | Votes: 20 | Rating: 7.25 ]
  • Wire Antenna Calculator - A javascript online calculator for popular wire antennas, from the standard easy to build flat-top dipole, to the inverted V dipole, but also the Quad Loop, and the equilateral delta loop antenna
    [ Hits: 1387 | Votes: 14 | Rating: 7.75 ]
  • 7 Element Yagi Calculator - Online javascript antenna calculator designed to give the critical information of a particular beam antenna, in this case a seven element Yagi, for the frequency chosen.
    [ Hits: 3440 | Votes: 57 | Rating: 6.72 ]
  • Calculate Antenna Lenght in feet, inches and meters - Inches and meters Javascript Wavelength Calculator allow to input a frequency in MHz and calculate wavelenght in several units considering also fractions of wavelenght and the velocity factor. Includes an usefull inch to meter converter
    [ Hits: 502 | Votes: 3 | Rating: 4.67 ]
Antennas : Feed Lines
  • Transmission line calculator - A transmission line caculator Java applet that can be run on your computer or by using your web browser. This calclucator can also be run on your PC by following instruction and download link.
    [ Hits: 720 | Votes: 4 | Rating: 3 ]
CB Radio : Personal Pages
  • 91 ET 104 DX Station - 91ET104 or 91ET/DX, Egi Noerman van Beekom West java Indonesia.
    [ Hits: 419 | Votes: 3 | Rating: 10 ]
DX Resources : Logs Search Services
  • LogSearch applet by G4ZFE - The Log search applet is a Java applet that allows on-line searching of your contest or DX-pedition logs. The applet and logs (in an optimised format) are located on your web site.
    [ Hits: 364 | Votes: 2 | Rating: 7 ]
Operating Aids : Maps
  • Amateur Radio Maps - Geomixer - Amateur Radio Maps online mixer of different selectable layers, including DXCC references, IOTA references, ITU and WAZ Zones. Works with most web browsers make heavy javascript usage.
    [ Hits: 2234 | Votes: 16 | Rating: 6.72 ]
Propagation : Observatories
  • Solar Physics Group - MSU - Of interest to solar keen hams is the YPOP section. Near real time movies of active solar regions in JAVA,GIF or MPEG.
    [ Hits: 244 | Votes: 0 | Rating: 0 ]
Software : APRS
  • YAAC - Yet Another APRS Client, is a free Java application written by Andrew Pavlin, KA2DDO, for monitoring and contributing to the APRS network. YAAC can be used as a stand-alone APRS client, an APRS RF-Internet gateway (I-Gate), or as a AX.25 digipeater.
    [ Hits: 748 | Votes: 1 | Rating: 9 ]
Software : Internet Linking
  • AllScan - AllScan is a free and open-source web app for AllStar nodes that provides Favorites Management features, AllStarLink Stats integration, and connection monitoring and control functions. Shows your favorites in a Dashboard summary table with Keyed status, Connected Node count and other statistics. Continually scans the status of each favorite using ASL's Stats API data showing which favorites are active and have recently been active. Allows favorites to be connected with a single click (optionally automatically disconnecting any currently connected nodes first). Allows the Favorites Table to be sorted by Node#, Name, Description, Location, etc. Favorites can be added/deleted simply by entering the node# and clicking a button. These features finally give AllStar nodes similar memory management and scan capabilities that analog radios have had for decades. AllScan is mobile-friendly and optimized for ease of use on both small and large screens. AllScan follows the latest web development standards, with PHP, JavaScript, HTML, and CSS cleanly partitioned, runs on both ASL and HamVOIP, and is very easy to install, configure, and update.
    [ Hits: 20 | Votes: 1 | Rating: 8 ]
Software : Linux
  • 10 QSO Logger - Ten-Ten International QSO parties logging program multi plaform run with Java under Windowd Linux MacOSX
    [ Hits: 1112 | Votes: 1 | Rating: 10 ]
Software : Morse Code Decoders
  • Morse Code Translator - An online morse code transaltor and encoder that can also translate morse code into text, you can even convert any text to a morse code audio wav file controlling pitch, speed and wpm, fully written in html5 and javascript.
    [ Hits: 875 | Votes: 5 | Rating: 5.8 ]
  • Morse Code Audio Decoder - An online CW audio decoder tool made for listening to, analysing and decoding Morse code. This can be done either playing a morse code audio file or connecting your compure line in. This fantastic tool, works only with some browsers and is all done in javascript using the Web Audio API.
    [ Hits: 6139 | Votes: 43 | Rating: 3.87 ]
Software : Morse Code Training
  • Morse Code Trainer - Learn morse code on-line with with this javascript training script. Practise copying and sending Morse code using a scheme of sessions developed by CWops. A downloadable version for off-line training is available
    [ Hits: 634 | Votes: 0 | Rating: 0 ]
Software : Radio Control
  • JaRec - Java Radio Remote Control Software - JaRec is a multi-platform Java application which can be used to control your own CAT enabled transceiver (with support for audio) using a Serial/USB Serial/Bluetooth or network connection. jAReC can act as both a server and as a client. The PocketRxTx Android application can be used as a client securely to connect over the network and control (CAT) your radio transceiver remotely via jAReC server over the Internet or local LAN, with bi-directional audio support.
    [ Hits: 1736 | Votes: 12 | Rating: 7.31 ]
Software : Radio Programming
  • Yaesu FT-817 FT-857 FT-897 EEPROM analyzer - A Java multiplatform application used to find EEPROM locations for different radio settings. a very simple to use multi-platform Java application which can be used to find EEPROM locations for different transceiver settings. This information can then be used to send the right CAT commands to configure the radio remotely. Use this application on your own risk.
    [ Hits: 288 | Votes: 1 | Rating: 10 ]
Software : Satellite tracking
  • JSatTrak - Satellite tracking program - JSatTrak is a Satellite tracking program written in Java. It allows you to predict the position of any satellite in real time or in the past or future. It uses advanced SGP4/SDP4 algorithms developed by NASA/NORAD or customizable high precision solvers to propagate satellite orbits.
    [ Hits: 504 | Votes: 1 | Rating: 10 ]
Technical Reference : Coax Cables and Connectors
  • Coax Loss Calculator Online by K5VR - RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.
    [ Hits: 249 | Votes: 2 | Rating: 5 ]

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