frequency measurement

19 links

Full Wave Loop Antenna Calculator ^updated - Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.
[ Hits: 930 | Votes: 7 | Rating: 6.14 ]
Vertical Antenna Calculator ^updated - Use this online calculator to determine the length of a quarter-wave antenna from the frequency. Both metric and English units of measurement are supported.
[ Hits: 919 | Votes: 9 | Rating: 6.32 ]
Dipole Calculator - Use this online calculator to determine the length of a dipole antenna from the frequency. Both metric and English units of measurement are supported.
[ Hits: 944 | Votes: 11 | Rating: 6 ]

Common-mode chokes - Chart that present results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
[ Hits: 607 | Votes: 2 | Rating: 4 ]
RF Chokes - A chart presenting the results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
[ Hits: 906 | Votes: 2 | Rating: 7.5 ]

Antenna Measurements - The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern
[ Hits: 946 | Votes: 3 | Rating: 4 ]
Measuring 2.4 GHz Helix Antennas - It is not very difficult to design and make a helix antenna for a specific frequency and gain. It is more difficult for the serious experimenter to make precise measurements of the finished antenna.
[ Hits: 748 | Votes: 5 | Rating: 9.2 ]

Anritsu - Provides technology and solutions for the electronic test and measurement, optical, rf and microwave, wireless, wired, telecommunications. Make Frequency Counters, Antenna and spectrum analyzers, power meters, signal generators
[ Hits: 816 | Votes: 0 | Rating: 0 ]
Phase Matrix - Frequency Counter w/Selective Power Measurement, Microwave Sythesized Signal Generator
[ Hits: 355 | Votes: 1 | Rating: 10 ]

Gage Applied Technologies - Gage applied technologies designs and manufactures high-speed data acquisition systems, high-speed digitizers in pci / cpci / pxi or pc oscilloscopes, providing utmost measurement fidelity for high frequency signals.
[ Hits: 550 | Votes: 0 | Rating: 0 ]

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 ]
Low Frequency operations by W3EEE - A squint at the world of LF This website was initially thrown together to provide ready availability to data being collected from the measurement of a transatlantic LF (Low Frequency) path.
[ Hits: 483 | Votes: 0 | Rating: 0 ]

Frequency Measurement with the FT-920 - KC5M frequency measurement with yaesu ft-920
[ Hits: 582 | Votes: 1 | Rating: 10 ]

MCS Test Equipment - MCS Test Equipment supply test and measurement equipment such as oscilloscopes, wireless testing systems, frequency scanners and more.
[ Hits: 238 | Votes: 0 | Rating: 0 ]

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: 3438 | Votes: 27 | Rating: 5.45 ]
NanoVNA-H 900 MHz Upgrade - NanoVNA based on edy555, use the odd harmonic extension of si5351 to support the measurement frequency up to 900MHz. GitHub repository.
[ Hits: 191 | Votes: 0 | Rating: 0 ]

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: 12378 | Votes: 32 | Rating: 8.85 ]

AF signal function generator for Windows - Windows signal function generator sotfware, offers 4 main channels, 4 modulators, 1 measurement generator, 1 frequency standard generator, Amplitude, phase and frequency modulation, can generates real band-limited signals
[ Hits: 617 | Votes: 4 | Rating: 3 ]

Measured Data For HF Ferrite Chokes - FT-240 toroids measurements. The data was measured using well-calibrated HP instrumentation. All plots have been adjusted to a frequency range of 1-100 MHz on the horizontal axis and a resistance/impedance range of 10-1,000 ohms on the vertical axis. This adjustment facilitates comparison among different materials and aids in determining their suitability for use on the HF ham bands.
[ Hits: 38 | Votes: 0 | Rating: 0 ]