GOST 19438.1-1974 Receiving amplifier and transmitting tubes with power to 25 watt continuously scattered by anode. Measurement methods of dynamic amplification factor and amplificating asymmetri at LF
1974GOST 19438.1-1974 Receiving amplifier and transmitting tubes with power to 25 watt continuously scattered by anode. Measurement methods of dynamic amplification factor and amplificating asymmetri at LF