swr freq

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Search Results for "swr freq"

9 links

Antennas : 40M

  • 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: 2674 | Votes: 6 | Rating: 4.83 ]
Antennas : Feed Lines
  • 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: 1128 | Votes: 0 | Rating: 0.00 ]
  • Build An LF Antenna Analyzer - A Portable Low Frequency Antenna Analyzer, For those of us who like to play with antennas on the ham bands, one of the handiest tools to have around the shack is an "antenna analyzer". These gadgets combine a signal generator and standing-wave ratio (SWR) sensor in a small battery-powered unit.
    [ Hits: 4144 | Votes: 2 | Rating: 5.00 ]
Antennas : Homebrewing Techniques
  • Antenna Impedance measurement - When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this
    [ Hits: 1125 | Votes: 6 | Rating: 2.67 ]
Antennas : Multiband
  • 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: 4578 | Votes: 4 | Rating: 8.00 ]
CB Radio : References
  • Rob's UK CB Radio information site - Robís uk cb radio information website, here you will find information on cb radio, swr, Morse code, frequency charts, 10 codes, q codes, z codes, cb chat room, cb radio forum plus lots more.
    [ Hits: 800 | Votes: 6 | Rating: 7.00 ]
Manufacturers : Electronic Components
  • A & A Engineering - Smart Battery Chargers, WeatherFAX, Color SSTV,GPS-Based Frequency Standard, Power/SWR Meter, , Digital Frequency Synthesizers
    [ Hits: 1442 | Votes: 1 | Rating: 1.00 ]
Operating Aids : Beginner's Guides
  • Radio & Communications - Info about many aspects of Radio & Communications. Antennas, signals, frequencies, codes, swr, scanning etc.
    [ Hits: 18004 | Votes: 12 | Rating: 3.51 ]
Software : Antenna analysis
  • 2 Element beam designer - This is a DOS program that will design a 2 element beam for a given frequency. The gain is about 6db's the front to back ratio is about 10 db's. The SWR will be about 1.8 to 1, so for transistor rigs a tuner is needed The only information required is the freq in MHZ..
    [ Hits: 1494 | Votes: 6 | Rating: 3.83 ]
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