frequency

frequency

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• Comparison of Beverage antenna - A ranking of receiving antennas based on noise being evenly distributed in all directions. These rankings are most accurate in the frequency range of AM broadcast, 160 or 80 meter bands
  [ Hits: 2855 | Votes: 2 | Rating: 6.5 ]

• Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.
  [ Hits: 1274 | Votes: 0 | Rating: 0 ]

• Constructing a LowFER Antenna - This article describes the antenna for Low Frequency Beacon. It originally appeared in the "Lowdown" for Oct. 1999.
  [ Hits: 1539 | Votes: 2 | Rating: 5.5 ]

• VHF/UHF Yagi Antenna Design  ^pop - Design your VHF UHF Yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna for 2m and 70cm bands. This page offers a streamlined experience for Yagi antenna design enthusiasts. It assumes prior knowledge of Yagi design principles, minimizing distractions with a user-friendly interface. Equipped with essential equations, it provides instant design feedback. Red font warnings indicate design limitations, ensuring practical results. Constraints include Gain (11.8-21.6 dBd) and Boom Length (2.2-39 wavelengths), with additional frequency-dependent restrictions noted in input fields.
  [ Hits: 147433 | Votes: 1105 | Rating: 6.95 ]

• NCDXF/IARU Beacon Project - The NCDXF, in cooperation with the IARU, constructed and operates a worldwide network of high-frequency radio beacons on 14.100, 18.110, 21.150, 24.930, and 28.200 megaHertz. These beacons help both amateur and commercial high-frequency radio users assess the current condition of the ionosphere
  [ Hits: 1333 | Votes: 4 | Rating: 8.5 ]

• DCI Digital Communications - Band pass filters, for radio frequency interference problems.
  [ Hits: 631 | Votes: 0 | Rating: 0 ]

• Recommended frequencies for digital modes - Active digital mode frequency list compiled by Jason Buchanan - N1SU
  [ Hits: 4048 | Votes: 6 | Rating: 4.67 ]

• Frequency Calibration for Weak Signal Work - Accurate calibration of your receiver and sound card is necessary for good results with the weak signal modes in use at LF. Modern receivers with master oscillators that are synthesized to provide all conversion frequencies greatly simplify the process. This article describes a method of making the necessary measurements and adjustments to an ICOM R75 receiver and a sound card, using the ARGO software
  [ Hits: 873 | Votes: 1 | Rating: 7 ]

• HF Radio wave propagation - Radiowave propagation in the medium and high frequency spectrum in DOC format
  [ Hits: 954 | Votes: 3 | Rating: 3.33 ]

• The G4PYR MF Coastal Radio Website - Website dedicated to Coastal Radio Stations, includes frequency lists for memdium frequencies maritime stations
  [ Hits: 1792 | Votes: 13 | Rating: 9.7 ]

• The Radio Reference - RadioReference.com, scanner frequency and radio communications reference source, with complete conventional frequency assignments, trunked radio system information, frequencies, and talkgroups, FCC License assignments and maps, 10-Code Lists, agency maps, files, downloads, links, and detailed agency information for most public safety, military, and local government activities.
  [ Hits: 6065 | Votes: 30 | Rating: 6.89 ]

• Las Vegas Scanner Frequencies - These are some of the frequencies that you can listen to when you are in Vegas with your radio scanner. Includes metro, police, fire dept.
  [ Hits: 3739 | Votes: 35 | Rating: 5.77 ]
• Missouri/Kansas Scanner Radio - Provides comprehensive frequency listings for various public safety agencies and private organizations who operate across the Kansas and Missouri Region.
  [ Hits: 10212 | Votes: 63 | Rating: 6.6 ]

• Alfa Lima International - A free radio station that is transmitting world wide on several shortwave frequency 's with loads of pirate and freeradio information.
  [ Hits: 1203 | Votes: 2 | Rating: 9.5 ]

• BSF Taiwan - Nation Standard Time and Frequency Laboratory Telecommunication Laboratories (TL) ChungHwa Telecom Co. Ltd.
  [ Hits: 1014 | Votes: 1 | Rating: 9 ]

• WD6CNF DSP Filter - Audio Digital Filter, two bandpass filters, three notch filters, two noise filters graphical setting of filter center frequency and bandwidth Drag vertical lines on top of signal, Microphone input, speaker output Mono, 5 kHz bandwidth
  [ Hits: 4902 | Votes: 2 | Rating: 10 ]

• RigResident - RigResident is a small program for RIG control, which does allow to set and read data of connected tranceiver (frequency, mode etc). RigResident supports more than 70 TRX models from ICOM, KENWOOD, YAESU and Ten-Tec.
  [ Hits: 3710 | Votes: 4 | Rating: 7.1 ]

• SpectraScope - SpectraScope is a simple Windows interface program allowing your computer to view up to two audio waveforms in either the time or frequency domain. The program is a Windows soft panel operating as a dual channel oscilloscope and spectrum analyzer. The useful frequency of operation is 20 to 10,000 Hz in the time domain and 20 to 20,000 Hz in the frequency domain. The program uses the computer sound card to capture the audio input.
  [ Hits: 10806 | Votes: 3 | Rating: 7 ]

• Open-channel - A CB radio website aimed mainly at the UK market including help, tips, repairs, mic wiring, frequency charts, chat forum,rig doctor listing, mail order shops and much much more
  [ Hits: 4097 | Votes: 4 | Rating: 7 ]

• Ferrite on Reducing RFI - Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your receivers or transceivers.
  [ Hits: 2237 | Votes: 0 | Rating: 0 ]

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