Modulation meter '' SK3-26 ''.
Instruments for adjusting and controlling the PTA.Since the 1st quarter of 1972, the modulation meter "SK3-26" has been produced by the Gorky Plant named after MV Frunze. The SK3-26 device is designed to measure the frequency deviation and amplitude modulation depth. The center frequency range is 10 ... 500 MHz (operation in the range up to 1000 MHz with an external local oscillator with a power of 20 ... 50 mW is possible). The sensitivity of the modulation meter with an input impedance of 50 Ohm at frequencies up to 250 MHz is no worse than 30 mV, at frequencies up to 500 MHz no worse than 100 mV and up to 1000 MHz no worse than 0.5 V. The maximum input signal voltage is 2.5 V. The modulating frequency range 50 Hz to 20 kHz. The device allows you to measure the frequency deviation up to 150 kHz and the amplitude modulation depth up to 100%. The device is powered from a 220 V AC power supply with a frequency of 50 Hz. Power consumption does not exceed 50 VA. The dimensions of the device are 360x175x375 mm. Its weight is 15 kg.