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50 microamps is full scale. Half scale would be 25 microamps.
Use Ohm's Law to calculate voltage:
V = (25/1000000 amps) x 2000 ohms = 0.05 volts
Last edited by wp2ahg. Register to edit
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SWR = Standing Wave Ratio.
The Standing Wave Ratio is defined by wikipedia as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line.
Put in simpler terms, one of the most common ways to measure SWR is to use a directional wattmeter and measure the amount of power from the transmitter to the antenna (\(P_f\) = Forward power) as well as the amount of power coming back from the antenna to the transmitter (\(P_r\) = Reflected power).
The SWR can then be calculated using the formula:
\[\text{SWR} = \frac{1+\sqrt{P_r\over P_f}}{1-\sqrt{P_r\over P_f}}\]
Last edited by kd7bbc. Register to edit
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