frequency

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503 links - and 9 categories

Antennas : Antenna Calculators Antennas : Feed Lines
  • ERP Estimator - Calculate online, ERP in dB and dBi given PWR Frequency Coax lenght and type and antenna type
    [ Hits: 1426 | Votes: 5 | Rating: 3.80 ]
Antennas : Magnetic Loop
  • Loop-Magnetic by Dj9RB - Magnetic Loop - DJ9RB Frequency range 2 MHz - 10,2 MHz
    [ Hits: 1401 | Votes: 2 | Rating: 5.00 ]
Antennas : Multiband
  • Vertical antenna for Vacation - Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band. Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
    [ Hits: 4622 | Votes: 4 | Rating: 8.00 ]
Antennas : Wire
  • The Zeppelin antenna - It consists of a radiating wire with a length equal to the half-wave of the fundamental frequency for which the antenna is cut.
    [ Hits: 1812 | Votes: 1 | Rating: 6.00 ]
DX Resources : Beacons : Beacon stations
  • WD2XGJ Experimental Station - Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren, Ham Call K2ORS, Frequency: 137.7796 KHz
    [ Hits: 460 | Votes: 0 | Rating: 0.00 ]
Ham Radio : Blogs : USA
  • Resonant Frequency: The Ham Radio Podcast - The amateur radio podcast was created to help get information on amateur radio out to the new ham and the ham that wants to find out about different aspects of the hobby they are thinking about trying out.
    [ Hits: 1029 | Votes: 5 | Rating: 10.00 ]
Ham Radio : Clubs : North America : Canada : British Columbia
  • Malaspina College amateur radio society - VE7RME repeater is located in Nanaimo. It operates on a transmit frequency of 146.98 mhz and a receive frequency of 146.38 mhz
    [ Hits: 171 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Antennas : HF
  • Dannex - Swedish manufacturer of broadband antennas designed for multi frequency, medium and long range communication. No tuner required.
    [ Hits: 1258 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Cable and Connectors
  • TOYO Connector (TYC) - Certified under ISO9001:2000 and focus on sales of high frequency coaxial connector (BNC, TNC, SMA, SMB, N, F, UHF, RCA etc); attenuator; termination; surge arrester; conversion; coaxial cable assembly; high frequency coaxial cable etc.
    [ Hits: 750 | Votes: 4 | Rating: 8.00 ]
Operating Modes : JT65 Radio Scanning : Regional : USA Shortwave Radio : SWL Resources
  • shortWWWave - News, frequency guides and programme information, on shortwave and other international media.
    [ Hits: 385 | Votes: 0 | Rating: 0.00 ]
Software : Antenna analysis
  • 2 Element beam designer - This is a DOS program that will design a 2 element beam for a given frequency. The gain is about 6db's the front to back ratio is about 10 db's. The SWR will be about 1.8 to 1, so for transistor rigs a tuner is needed The only information required is the freq in MHZ..
    [ Hits: 1549 | Votes: 7 | Rating: 4.71 ]
  • HF Beam Calculator - A javascipt online calculator for 2 and 3 element beam antennas. Just input frequency and will diplay element dimensions and spacing. Measurements in Feet and Meters by G4VWL
    [ Hits: 2629 | Votes: 25 | Rating: 5.44 ]
Software : Circuit Design
  • ViPEC Network Analyzer - This program intended for electronic circuit analysis (mainly for Linux). ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks.
    [ Hits: 863 | 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: 960 | Votes: 1 | Rating: 10.00 ]
Software : Linux
  • IBP - Beacon Monitor - Linux program that helps one with monitoring the beacons of the International Beacon Project, by continuously showing which beacon is transmitting on which frequency, along with the distance and antenna directions by PA3FWM
    [ Hits: 1030 | Votes: 1 | Rating: 10.00 ]
Software : Macintosh
  • The KB6IBB Utilities - Ham radio frequency list consolidation software. The Ham Radio database can house a unlimited number of records. Holding frequency information from DC to Daylight. The Radio Scanner Database is designed to emulate a radio scanner. A 5,000 record table is provided and is organized by channel number.
    [ Hits: 749 | Votes: 1 | Rating: 7.00 ]
Software : Pocket PC
  • CTR-Remote - CTR-Remote is an enhanced version of CTR817 (a Pocket PC radio control program for the Yaesu FT-817). The program has been completely re-written using Microsoft Visual Studio .NET and now supports a wider range of radios, Bluetooth® wireless technology and/or TCP/IP and Wi-Fi radio control, ADIF log import and export format, custom frequency lists, DX Cluster monitoring, callsign lookup, and enhanced scanning options.
    [ Hits: 1770 | Votes: 4 | Rating: 3.25 ]
Software : Radio Control
  • KE7ATE - VR-5000 Signal Capture and Analysis Software - Give your VR-5000 a new face. Controls your VR-5000, Log stations, Manage frequency lists, Record Audio and more. This program utilizes a more visual approach to simplify your radio listening.
    [ Hits: 1346 | Votes: 3 | Rating: 4.00 ]
Technical Reference : Filters
  • 500 KHz Low Pass Filter - This article describes a shielded low pass filter with a cut off frequency of about 500 KHz. It is built with components suitable for receiving, and was designed to use in front of a low frequency receiver for LOWFER work.
    [ Hits: 961 | Votes: 8 | Rating: 3.00 ]
Technical Reference : Keyers
  • FM Morse Code Keyer - A simple circuit which will generate a 700 Hz tone into any FM transceiver allowing an amateur to practice CW with another amateur on a 2 meter simplex frequency.
    [ Hits: 1599 | Votes: 3 | Rating: 3.33 ]
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