Hello friends! Finally, I finished working on a datasheet, in which I decided to combine the most popular amplifier pentodes and tetrodes. I decided to make the design in the style of old radio magazines from the 1960s in several variations - two in the style of old paper and two in the style of inserts from the magazine (color and monochrome). The design itself was not complicated, but collecting the information itself made me sweat a lot while I re-read the specifications for each radio tube listed here. Unfortunately, there is no clear data on the parameters of the tubes. On the one hand, in different specifications for the same tube, the numbers sometimes do not coincide, and on the other hand, different manufacturers produce different tubes, although with the same name. Therefore, before installing a specific tube into an amplifier, it is best to follow the specifications from the manufacturer of a given pentode or tetrode. And now you can look at the pictures) And of course, acco...