Instant standing bridge

The modified 190B Tektron constant amplitude signal generator combines a 50 ohm resistor bridge to stabilize the high precision instrument to measure the voltage standing wave ratio of the antenna. The range is from 160 meters to 10 meters. The Trim Rx incident or forward voltage at position 1 of S1 is equal to the reflected voltage at position 2. The article gives a chart of how to find standing waves. And how to adjust the signal generator step by step.