Homemade swr meter

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This site is dedicated to providing information about the different types of antennas we manufacture for the Citizen Band Radio and 11 Meter DXing. At Lightning Antennas, we have over fifteen years of experience in the craft of manufacturing and worldwide distribution of the most advanced CB Quads on the market.

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v.1 12 November 1992 r.2 J-POLE ANTENNA FOR 2m W. Kinsner, VE4WK 1 of 3 1 2 3 4 5 6 7 8 E D C B A E D C B A 1 2 3 4 5 6 7 8 5 June 1992 Q = 2807/f[MHz] = 19-3/16" [W ... A homemade beam or antenna for Citizens Band (CB) radio is easy to make, but the difficulty comes in matching and tuning the antenna with the transmitter. To understand antennas and beams, you have to learn terms such as frequency and resonance and have a good grasp of basic math.

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antenna and transmission line and therefore increased voltage standing wave ratio (VSWR). Superposition of forward and reflected waves along the transmission line produces standing waves resulting in maximum and minimum voltage amplitude locations. VSWR is the ratio of the maximum to minimum transmission line voltage amplitude. A defective SWR meter is rarely the cause of high SWR readings, but when it is, it can wreak havoc on your troubleshooting efforts. The easiest way to test for a defective meter is to take readings from a second meter and compare the results to those from the first meter.

Jul 14, 2020 · The SWR of an antenna is often represented graphically by waves. Tune your radio for waves with the smallest amplitude -- or difference between peaks and troughs -- possible. Write down the tuning frequency for your SWR at mid-range. Tune your capacitor to the smallest SWR possible. If your SWR worsens, adjust in the other direction.