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z time

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Antennas : Bazooka
  • The Bazooka Antenna - Notes on bazooka antennas by Katunk: a portable field antenna, sometimes called the double bazooka or a coaxial antenna.
    [ Hits: 4385 | Votes: 4 | Rating: 7 ]
Antennas : WiFi
  • A 2.4 Ghz High gain antenna  pop - Here is how to build a high gain antenna for 2.4 gHz wireless networks. Several hams are experimenting with these devices in an effort to build a network. It is sometimes referred to as Hinternet or HSMM.
    [ Hits: 61430 | Votes: 90 | Rating: 5.55 ]
DX Resources : Ham Radio Awards
  • Russian awards for HAMs. - CORA - Cities Of Russia Award, TZA - Time Zones Award, Transsib, Baikal Lake Award, Baikal Winteriada, GLORIA - Grid Locators Of Russia International Award. Look for details at the site.
    [ Hits: 659 | Votes: 1 | Rating: 8 ]
Ham Radio : Clubs : North America : USA : California
  • Calnet Repeater Group - Calnet a multi repeater amateur radio system serving most of California and parts of Nevada. The Calnet system consists of numerous fulltime linked 440 MHz repeaters connecting San Diego to San Francisco and Lake Tahoe.
    [ Hits: 1311 | Votes: 2 | Rating: 7.5 ]
Ham Radio : Clubs : North America : USA : Massachusetts
  • Minuteman Repeater Association - The Minuteman Repeater Association is a non-profit communications organization serving the public in times of emergency.
    [ Hits: 830 | Votes: 1 | Rating: 8 ]
Ham Radio : Clubs : North America : USA : North Carolina
  • Robeson County Amateur Radio Society - RCARS has been formed to be a non-profit corporation dedicated to the safety and welfare of the citizens of Robeson County in times of emergency, disaster or other communications breakdown or overload.
    [ Hits: 313 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : North America : USA : Ohio
  • Cuyahoga Amateur Radio Society (CARS) - The Cuyahoga Amateur Radio Society (CARS) is a not-for-profit organization comprised of Amateur Radio (Ham Radio) operators dedicated to furthering the art of Ham Radio and to serving the public in times of disaster
    [ Hits: 717 | Votes: 0 | Rating: 0 ]
Internet and Radio : Humor
  • CQ Serenade Song - CQ Serenade was composed sometime between 1965 and 1970 by Maurice Durieux, VE2QS.
    [ Hits: 1137 | Votes: 7 | Rating: 8.86 ]
Operating Aids : Maps
  • Time Zone Map - Standard time zone map of the world in a jpeg file
    [ Hits: 1420 | Votes: 4 | Rating: 5.75 ]
Operating Aids : Time
  • The official US time - Current time in different time zones
    [ Hits: 1436 | Votes: 6 | Rating: 3.17 ]
Operating Modes : DSP
  • Clover 2000 - CLOVER-2000 is a faster version of CLOVER (about four times faster) that uses eight tone pulses, each of which is 250 Hz wide, spaced at 250-Hz centers, contained within a 2 kHz bandwidth between 500 and 2,500 Hz
    [ Hits: 856 | Votes: 1 | Rating: 1 ]
Propagation : MUF Indicators
  • Near-Real-Time F2-Layer Critical Frequency Map - This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space. The map shows the radio auroral zones as green bands near the northern and southern poles.
    [ Hits: 5270 | Votes: 24 | Rating: 4.84 ]
Software : Antenna analysis
  • HamCalc v1.3  pop - HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations, Attenuators, Audio Filter design, Coil Winding, Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps QRA Locator to Latitude/Longitude, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWL
    [ Hits: 28817 | Votes: 114 | Rating: 5.57 ]
Software : DSP
  • Linrad - Multiplatoform freeware DSP software. Linrad has its origin in software that was developed for 144 MHz EME CW but it is quite general and should be seen more like a kit for designing a receiver that a receiver for some particular usage. It can be used as a CW receiver with a small time delay and a fast waterfall graph. A dsp for conventional receiver to imporve signals readability, a spectrum analyzer.
    [ Hits: 9979 | Votes: 18 | Rating: 7.46 ]
Software : Hellschreiber
  • EasyGram - This Windows MTHELL QRSS NDB and DFCW program extends possibilities of well-known Spectrogram with some new useful features. It enables to define the scrolling area to any size, it can save screen shots in defined time periods , it enables to browse the saved pictures easily by OK1FIG
    [ Hits: 1232 | Votes: 1 | Rating: 1 ]
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 : Low Frequency
  • Baudline signal analyzer - A Linux based FFT spectrum analyzer designed for time-frequency browsing and scientific data visualization. Oscilloscope waveform, statistical histogram, accumulated spectral trace,Weak Signal reception, continuos data logging, FFT Analyzer and specialized measurement windows.
    [ Hits: 12376 | Votes: 32 | Rating: 8.85 ]
Software : Morse Code Training
  • Morse Maker - MorseMaker is an up-to-date replacement for the Morse Machine shown further down this page. It has been re-written using a different programming language and is now entirely 'stand-alone' requiring no run-time support files. This version also works with Windows XP and can use the soundcard but please note that, unlike its predecessor, it does not split the alphabet into smaller 'learning' blocks and does not incorporate the Morse reader.
    [ Hits: 2390 | Votes: 9 | Rating: 6.23 ]
Technical Reference : Filters
  • Second-Harmonic-Optimized Low-Pass Filters - Sometimes we need a little more output filtering than traditional designs offer. Look at a new filter that can give you that extra boost. QST article by W3NQN
    [ Hits: 877 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Direction Finding
  • ARDF transmitter for 80 meters - The 80m TX described here is the well known ON7YD ATX-80 and timer, combined and re-engineered to fit a readily available enclosure by G3ZOI
    [ Hits: 1098 | Votes: 1 | Rating: 9 ]

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