Vintage collectible tube network radio ARZ-51 from 1951. Network tube radio receiver “ARZ-51″ manufactured in 1951 in good working condition. The ARZ-51 radio receiver replaced the ARZ-49 model. The power supply circuit has been changed to full-wave with a 6Ts5S kenotron. In appearance, size and weight, the receiver was almost no different from the previous one. Operating frequency ranges: LW 150…415 kHz, MW 520…1600 kHz. Intermediate frequency 110 kHz. The sensitivity of the model is about 300? V. Selectivity in the adjacent channel at a detuning of 10 kHz is at least 20 dB. Selectivity in the mirror channel is 15 dB. The range of reproduced sound frequencies is no longer 200…3000 Hz. The output power of the new 1GD-1 loudspeaker with a THD of 10% is about 0.5 W. Power consumption from the network is 40 W. If you have any questions, please be sure to contact me before purchasing. Take a look at my store, you will see a lot of interesting things there. Despite the current situation in my country, we are working and sending parcels for you. You will receive exactly what you see in the photo. There are scratches and signs of time.