frequency meter

frequency meter

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• 80 Meter Pizza Pan Antenna - This is a resonant, half-wave, vertical antenna. It takes up little space in the back yard, was designed for operation on a single frequency 80 meter PSK net, and is reasonably inexpensive to construct by Chuck Hines, K6QKL
  [ Hits: 3724 | Votes: 3 | Rating: 5 ]

• Dipole Calculator in JavaScript - Input the desired resonant frequency and it will calculate lenght in inches feet and meters
  [ Hits: 4719 | Votes: 20 | Rating: 6 ]

• 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: 1275 | Votes: 0 | Rating: 0 ]

• 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: 5037 | Votes: 4 | Rating: 8 ]

• VA3GRR - Radio Beacon - VA3GRR is a radio beacon, operating on the 10 meter amateur band. Its frequency is 28.205.5 MHz. It runs just under 5 watts of power into a vertical half-wave ringo style antenna
  [ Hits: 476 | Votes: 1 | Rating: 10 ]

• A & A Engineering - Smart Battery Chargers, WeatherFAX, Color SSTV,GPS-Based Frequency Standard, Power/SWR Meter, , Digital Frequency Synthesizers
  [ Hits: 1710 | Votes: 1 | Rating: 1 ]

• OAK Hills Research - CW transceiver kits, QRP, frequency counters, QRP wattmeters, Dummy loads and QRP Parts
  [ Hits: 4430 | Votes: 3 | Rating: 6.5 ]

• 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 ]
• Keithley Instruments Inc. - Digital multimeters, power supplies, frequency counters, RF analyzers, signal generators
  [ Hits: 617 | Votes: 0 | Rating: 0 ]

• BK Precision - Power supplies, electrical testers, battery analyzers, cable tester, rf generators, spectrum analyzers, Digital/Analog Oscilloscopes, Multimeters , attenuators, frequency counter
  [ Hits: 2182 | Votes: 0 | Rating: 0 ]

• Low Frequency Transmission Modes - Article by W1TAG on operating modes used on low-banding. The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF
  [ Hits: 438 | Votes: 0 | Rating: 0 ]

• Fox Delta Amateur Radio Projects & Kits by VU2FD - Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.
  [ Hits: 1303 | Votes: 4 | Rating: 10 ]

• Naptech - Naptech buys and sells quality test equipment from hp, tektronix, including spectrum analyzers & peripherals, oscilloscope, frequency counters timers, signal generators, multimeters & voltmeters, RF & power meters, microwave amplifiers
  [ Hits: 490 | 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 ]

• RadioRaft - RadioRaft decodes 10 different ARQ modes, 8 different FEC modes, Packet, Baudot, CW... It works with a Hamcomm interface or a radiomodem. RadioRaft offers automatic detection of modes, speeds and shift. It comes with a frequencymeter/baudmeter included, it has signal frequency tracking and a bit by bit display mode. Very easy to use. practical and fast.
  [ Hits: 19845 | Votes: 40 | Rating: 6 ]

• Audio Spectrum Analyzer - OscilloMeter  ^pop - Audio Spectrum Analyzer for Real-time, FFT, OscilloScope, Frequency counter, voltmeter, noise and distortion meter, phase shift meter. Multi-Tone Sound Frequency Sweep Generator. White, pink noise.
  [ Hits: 89803 | Votes: 328 | Rating: 6.2 ]

• 50MHz frequency counter, V-meter - Circuit schematic PCB and photo documentation on building a 50 Mhz frequency counter
  [ Hits: 6609 | Votes: 10 | Rating: 4.55 ]

• LC METER - Inductance and Capacitance meter using``Frequency Shifted Oscillator
  [ Hits: 11458 | Votes: 21 | Rating: 4.86 ]

• 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: 2137 | Votes: 3 | Rating: 3.33 ]

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