frequency meter

frequency meter

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• 160m inverted L by W6SDO - A 160 meter antenna with a base loading coil used to tune the two lower frequency segments of the band.
  [ Hits: 1830 | Votes: 3 | Rating: 7.33 ]

• ZMV Spiral antennas - An experimental antenna similar to the TAK spiral antenna was evaluated for SWR response over the frequency range of 7.0 to 7.3 MHz, or the 40-meter band.
  [ Hits: 3431 | Votes: 8 | Rating: 5.37 ]

• N3OX Flex Vertical for 40m - N3OX three meters Flex Vertical, a Short, Frequency Agile Vertical for 40 meters
  [ Hits: 716 | Votes: 0 | Rating: 0 ]

• Calculate Antenna Lenght in feet, inches and meters - Inches and meters Javascript Wavelength Calculator allow to input a frequency in MHz and calculate wavelenght in several units considering also fractions of wavelenght and the velocity factor. Includes an usefull inch to meter converter
  [ Hits: 502 | Votes: 3 | Rating: 4.67 ]

• Multiband fan dipole antenna - A three-frequency multi-band dipole that can be extended easily to additional bands. This article includes a multiband fan-dipole antenna for 80-40-20-10 meter band.
  [ Hits: 2460 | Votes: 6 | Rating: 9.17 ]

• Magnetic Loop Antenna Calculator - Free windows program to calculate magnetic loop antenna.This small loop antenna calculator allow to determine capacitance and voltage based on Loop circumference, desired resonant frequency, conductor diameter and the operating power
  [ Hits: 6224 | Votes: 25 | Rating: 6.28 ]

• Moxon Antenna Calculator  ^updated - Online Moxon antenna calculator. Design your moxon antenna online giving wire diameter and resonant frequency
  [ Hits: 3185 | Votes: 29 | Rating: 5.65 ]

• Balcony Mounted Buddistick Antenna by KP4MD - The antenna handles 250 watts and covers 40 through 10 meters, with an optional add on coil for 80 and 60 meters. The author in this pages includes an interesting video in which describes the antenna setup, and the importance of the shunting coil on lower bands like 40 and 80 meters. SWR curves diagrams are also included and demonstrate the influence on resonating frequency of the shunting coil.
  [ Hits: 281 | Votes: 3 | Rating: 10 ]

• Tektronix - Frequency Counters - Tektronix Frequency Counters pack the functionality of a frequency counter, meter and timer into one instrument.
  [ Hits: 257 | Votes: 0 | Rating: 0 ]

• Keysight (Agilent) Signal Generator - Keysight offers numerous baseband, RF, and microwave signal generator (signal source) products. From basic to advanced, baseband to 67 GHz, Keysight signal generators are capable of frequency extensions to 500 GHz with millimeter-wave source modules.
  [ Hits: 238 | Votes: 0 | Rating: 0 ]

• Wavelab - Multi-frequency radio interferometers
  [ Hits: 565 | Votes: 0 | Rating: 0 ]

• ZL2IFB Elecraft K2 K3 - A page dedicated to the Elecraft K2 and K3 transceivers, Connecting the K3 to your PC Useful K3 features, K3 REF CAL re-calibration of the VFO frequency, W2 wattmeter, KPA500 QSK amplifier
  [ Hits: 104 | Votes: 2 | Rating: 10 ]

• Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.
  [ Hits: 11316 | Votes: 9 | Rating: 7.77 ]

• Universal frequency counter & voltage meter - to be used with QRP transceivers
  [ Hits: 1348 | Votes: 1 | Rating: 10 ]

• Homebrew a High Performance SSB RTX for 14 MHz - This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.
  [ Hits: 347 | Votes: 5 | Rating: 7.8 ]

• Frequency Locked Loop VFO for HF - A device which joins in a single microprocessor a digital programmable frequency meter and a control logic capable to lock a manually tuned VFO to its actual frequency by IK3OIL
  [ Hits: 1854 | Votes: 4 | Rating: 7.75 ]
• 75 meter AM Transceiver - Frequency coverage: 3.75 MHz to 4.00 MH transceiver for 75 MHz band
  [ Hits: 1190 | Votes: 1 | Rating: 10 ]

• 80 meter Ceramic Resonator VXO CW Transmitter - Frequency agile 80 metre CW QRP transmitter. Ceramic resonators vary in the frequency shift obtainable. The one in the prototype of this article gave 3.525 to 3.558 MHz coverage.
  [ Hits: 225 | Votes: 1 | Rating: 1 ]

• RF Probs and Watt meter - This RF probe can be used at High Frequency (HF) or Ultra High Frequency (UHF) on both 50 and 75 ohm coaxial cables.
  [ Hits: 605 | Votes: 1 | Rating: 10 ]

• Analog HF Antenna Analyser - A simple antenna analyser for the HF spectrum with a built-in signal generator with 3-digit LED frequency display.
  [ Hits: 1016 | Votes: 0 | Rating: 0 ]

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