frequency meter45 links
Antennas : Antenna Calculators
- Input the desired resonant frequency and it will calculate lenght in inches feet and meters
[ Hits: 4491 | Votes: 20 | Rating: 6.00 ]
- 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: 2675 | Votes: 2 | Rating: 6.50 ]
- 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: 1161 | Votes: 0 | Rating: 0.00 ]
- 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: 4763 | Votes: 4 | Rating: 8.00 ]
- Amateur radio spectrum management and frequency coordination entity for 2-meters in southern california.
[ Hits: 495 | Votes: 0 | Rating: 0.00 ]
- A & A Engineering
- Smart Battery Chargers, WeatherFAX, Color SSTV,GPS-Based Frequency Standard, Power/SWR Meter,
, Digital Frequency Synthesizers
[ Hits: 1489 | Votes: 1 | Rating: 1.00 ]
- OAK Hills Research
- CW transceiver kits, QRP, frequency counters, QRP wattmeters, Dummy loads and QRP Parts
[ Hits: 4153 | Votes: 3 | Rating: 6.50 ]
- Maritime stations on 150 meters band
- 2 MHz Medium Frequency Maritime Stations in PDF format
[ Hits: 778 | Votes: 2 | Rating: 9.50 ]
- Really Low Frequency Operating
- The world below 500 kHz (The wavelength is 1500 meters or just about a mile) has a number of interesting listening and communications opportunities with possibly more to come.
[ Hits: 732 | Votes: 3 | Rating: 5.67 ]
- 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: 341 | Votes: 0 | Rating: 0.00 ]
- FT-857D Faqs
- Are the 60-meter channels in my FT-857D off frequency?
[ Hits: 3397 | Votes: 1 | Rating: 1.00 ]
- 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: 1107 | Votes: 4 | Rating: 10.00 ]
- 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: 3063 | Votes: 27 | Rating: 5.45 ]
- 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: 18064 | Votes: 37 | Rating: 6.14 ]
- Audio Spectrum Analyzer - OscilloMeter
- 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: 86838 | Votes: 315 | Rating: 6.18 ]
- 50MHz frequency counter, V-meter
- Circuit schematic PCB and photo documentation on building a 50 Mhz frequency counter
[ Hits: 6311 | Votes: 10 | Rating: 4.55 ]
- LC METER
- Inductance and Capacitance meter using``Frequency Shifted Oscillator
[ Hits: 11155 | Votes: 20 | Rating: 5.05 ]
- 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: 1750 | Votes: 3 | Rating: 3.33 ]
- A 50 MHz MicroWattMeter
- A design for a simple microwattmeter. Input range -75 dBm to + 5 dBm. Frequency range 2 to 50 MHz
[ Hits: 3640 | Votes: 6 | Rating: 4.83 ]
- 2 Meter FM Channelized Frequencies
- It is possible to program almost every repeater and simplex frequency for most areas for the entire 2 meter FM band plan into a radio's memory channels.
[ Hits: 6377 | Votes: 11 | Rating: 5.45 ]
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