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Antennas : Portable
  • Portable HF Antenna for the field day - This article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry.
    [ Hits: 1643 | Votes: 2 | Rating: 7.5 ]
  • M1IOS - Wonder Whip antenna and tuner - M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!
    [ Hits: 14505 | Votes: 24 | Rating: 9.04 ]
Ham Radio : Blogs : USA
  • KB3JUV logbook - WebLog for Amateur Radio, Computers, Technology, not my personal life because...who really cares about my personal life? by Justin Kates Lewes, Delaware, United States
    [ Hits: 510 | Votes: 2 | Rating: 10 ]
Internet and Radio : Other Resources
  • Rain Report about Amateur Radio - A weekly report with interviews about Amateur / Ham Radio and people in the hobby. Broadcast in Real Audio streaming 3.0 and 2.0
    [ Hits: 431 | Votes: 0 | Rating: 0 ]
Internet and Radio : Sounds
  • The PA2S 50 MHz Tape Archives - The PA2S Tape Archives. Many RealAudio sound clips of 50 MHz DX contacts, recorded during solar cycle 21 and 22.
    [ Hits: 819 | Votes: 0 | Rating: 0 ]
  • Heard on Six - The Real Audio 6m DXCC on the web by ik0fta
    [ Hits: 1212 | Votes: 4 | Rating: 5.25 ]
Manufacturers : QRP Kits
  • Ramsey Electronics - Large selection of affordable and fun hobby kits as well as a really neat selection of electronic gear. Transmitters and receivers kits, test equipments, RF test enclosures.
    [ Hits: 3734 | Votes: 3 | Rating: 8 ]
Operating Modes : DSP
  • Mfsk - MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
    [ Hits: 497 | Votes: 0 | Rating: 0 ]
Operating Modes : MFSK
  • Mfsk - MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
    [ Hits: 994 | Votes: 0 | Rating: 0 ]
Operating Modes : Radio Direction Finding
  • A low power 3.5MHz ARDF transmitter - This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.
    [ Hits: 2041 | Votes: 4 | Rating: 6.5 ]
Operating Modes : Satellites : Real Time Tracking
  • Real Time Satellite tracking  pop - Select your favorite satellite and watch its trajectory on Google Maps in real time! Includes ISS tracking, Weather, Geostationary, GPS Military, and of course Amateur radio satellites
    [ Hits: 30431 | Votes: 103 | Rating: 5.53 ]
Software : APRS
  • Win APRS - Automatic Position Reporting System windows program, allow monitoring of real time geographical information such as the position of vehicles, the status of weather, radio direction finding and more.
    [ Hits: 21359 | Votes: 26 | Rating: 5.38 ]
Software : Antenna analysis
  • Smith Chart Software - SimSmith is a highly interactive, real time Smith chart graphing program. Circuits are constructed using drag-n-drop. Load files can be imported from the EZNEC and CocoaNEC antenna simulation software and from the AIM4170 and miniVNApro antenna analyzers. Circuits and load files can be of any size. Key Features: SimSmith is one of the few Smith chart packages which models transmission line losses. SimSmith also allows the description of circuit elements using algebraic equations. SimSmith has only one screen and allows the screen to be resized to increase workspace or readability.
    [ Hits: 1573 | Votes: 6 | Rating: 6.5 ]
Software : Linux
  • FFT Explorer - A free (GPL) Linux (Xwindows GUI-based) utility that performs spectral analysis on real-time data from a sound card or other source, and can analyze the spectra of various sound file types. It can also accept data from many kinds of applications in plain-text form by way of the "named pipe" feature of Linux
    [ Hits: 10986 | Votes: 8 | Rating: 4.88 ]
Software : Oscilloscope
  • Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.
    [ Hits: 21544 | Votes: 13 | Rating: 6.23 ]
Software : Satellite tracking
  • Ballistic simulator Orbit - Ballistic simulator "Orbit" allows the physical principles of the motion in the gravitational field of the Earth to be demonstrated and learned. You can calculate with this program the ballistic trajectories of the thrown bodies and orbits of spacecrafts and visualize the astroballistic situation on the flat map of the world and on the rotating globe in the real time
    [ Hits: 1877 | Votes: 3 | Rating: 7.33 ]
  • 0sxsat - On the Satellitenprogram of DJ0SX Peter one can provide time schedules for over 500 satellites or count 23 satellites real-time imTextmode. The large advantage exists in thought out and of long observation practice which are due flexibility in the selection and the requirements to a satellite program. The program runs under Windows 95/98, NT, XP, 2000
    [ Hits: 5019 | Votes: 6 | Rating: 4.5 ]
Software : Weak Signal
  • HamView - A freeware program to dig out weak signals buried in noise, functionally similar to the excellent FFTDSP of AF9Y, but with the added bonus of real time audio filtering of the incoming signals. Just point and click with the mouse, and the selected signal will stand out from the QRM and noise.
    [ Hits: 7559 | Votes: 3 | Rating: 5 ]
Technical Reference : Components : Toroids
  • Toroid Winding - Winding Toroids can be a real hassle for those of use who are left-handed or not so dexterous as we once were.
    [ Hits: 3616 | Votes: 5 | Rating: 7.8 ]
Technical Reference : Mic wiring
  • CB Mic Wiring  pop - Excellent resource for microphones wiring including old make of cb radios. Microphone wiring can be a real pain if you arent sure how to work out which wire goes where. On this page i will try to explain the basics and also give you the wiring positions for most CB radio's
    [ Hits: 26760 | Votes: 41 | Rating: 5.46 ]

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