Thanks for the reply Zen.
I am a regular viewer of your channel, I really appreciate your videos, I have watched almost all of them related to the field that interests me.
The quality of your video works is really fascinating and I learned a lot from them, and I believe that many other electronics enthusiasts are of the same opinion.
Thanks to you too, Mr. Lee, for your reply.
As for these transistors, I have for now sent back all the ones that looked good (no corrosion), and tested good the old fashioned way with a multimeter.
There was only one that showed some strange symptoms when tested with a multimeter, and I temporarily replaced it with a 2N3069
because I don't have another at the moment. Maybe I'll replace it with the BF199, I'll see how the device behaves.
Maybe I didn't search hard enough, but I don't know if you've noticed that if you're looking for that type of transistor that goes up to 1.1GHz frequency,
you couldn't find that there is a transistor available today with these characteristics, and that at the same time its HFE min.=100
It seems that they still had a reason to order a custom-made transistor, according to the characteristics listed below.
However, I am not an expert enough to say why it was necessary or what it was intended to achieve.
Beros
