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Amateur - Circuitry

   Test Equipment - Aerial and Transmission Line Measurements
Circuit of coupler unit
Circuit diagram of the meter swithing for a mounted reflectometer
High-gain field-strength meter by WA4DXP
A sensitive crystal diode checker of field-strenght meter using an af transistor as dc amplifier
Circuit diagram of the noise bridge
Noise bridge measuring both R and X
Circuit of rf impedance bridge

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   Stun Guns

   Test Equipment - Noise Measurements
   Test Equipment - Measurements of Components
   Test Equipment - Power Supply
   Test Equipment - RF Power Measurement
   Test Equipment - Aerial and Transmission Line Measurements

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