I want to share one interesting find 🙂
I always thought that since 6N24P tubes were designed for cascodes with AGC, they have remote cut-off curves, but recently found that they are as linear as 6N23P!
They were made to replace 6N14P that also were very linear, but had twice lower gm. So, it looks like Soviet engineers cheated taking 6N23P, changing pinout, to be used in channel selectors of Soviet TVs!
However, a shield between triodes connected to the grid may look inconvenient, but if to use this triode as a cathode follower after the other one, it is perfect.
I always thought that since 6N24P tubes were designed for cascodes with AGC, they have remote cut-off curves, but recently found that they are as linear as 6N23P!
They were made to replace 6N14P that also were very linear, but had twice lower gm. So, it looks like Soviet engineers cheated taking 6N23P, changing pinout, to be used in channel selectors of Soviet TVs!
However, a shield between triodes connected to the grid may look inconvenient, but if to use this triode as a cathode follower after the other one, it is perfect.
There is a thread about the 6Н24П here: https://www.diyaudio.com/community/threads/6n24p-6h24.380068/post-6865285
Anatoly - do you know how 6N14P and 6N24P are related to 6N3P, which was used in early TV channel selectors (PTK)?
Thank you, I did not see this thread. I always thought that it is a remote cut-off twin triode until recently.
Here are pictures in that thread that prove that:
Sure, it is a great ECC88/6DJ8 replacement for DIYers who solder wires to sockets by themselves.