United States Belar AMM-3A AM Advanced Audio Tester

United States Belar AMM-3A AM Advanced Audio Tester Features: The Belar AMM-3A Modulation Control Meter is a full solid-state, an AM detector, which is used to measure the total amplitude of the AM broadcast transmitter of the medium wave frequency, which is better than the standard of the US Federal Communications Commission. The AMM-3A tester circuit has a non-frequency discernible force, so this device is also suitable for short-wave transmitters. Using outstanding simulated shunt circuits, although the carrier level changes, the accuracy of all indicators can also be maintained. The display instrument between the two-sided half-peak indicates that positive negative modulation. The positive negative modulation peak and the individual fixed 100% negative and 125% positive modulation peak indicator. RF frequency range: 260kHz-50MHz, RF sensitivity: 4VRMS-10VRMS. RF input impedance: 1000OHMS standard, RF input: BNC connector on the rear panel. Signal ratio: > -80dB (to increase). Accuracy: + 2%. Frequency response: + 0.0dB, -0.5dB, 20Hz-15kHz fixed indicator: -100%, + 125%

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