UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

dmowziz · 18th Jan 2022, 8:42 pm

Thank you very much Jeremy!

The Gmax and K I studied briefly before (it was "dry") now seems fun ... It's something I can measure! Thank you

Which will you get? A right angle SMA plug or straight?

I'm getting funds this week so getting components.
First thing being to try and measure the S parameters of a transistor with my big VNA and compare with what you have.

"
I still think you should either experiment with JFET parts or maybe try a BJT in common base. Otherwise the BJT will produce too much power gain in common emitter and your VNA will overload the BJT and also port 2 of the VNA."

Thank you, I'm doing this today with a NanoVna

Btw, post #29, will this be the GMAX and K for that? I don't think so

18th Jan 2022, 8:42 pm	#32
dmowziz Pentode Join Date: Nov 2021 Location: Toronto, Canada Posts: 131	Re: s2p file from VNA Thank you very much Jeremy! The Gmax and K I studied briefly before (it was "dry") now seems fun ... It's something I can measure! Thank you Which will you get? A right angle SMA plug or straight? I'm getting funds this week so getting components. First thing being to try and measure the S parameters of a transistor with my big VNA and compare with what you have. " I still think you should either experiment with JFET parts or maybe try a BJT in common base. Otherwise the BJT will produce too much power gain in common emitter and your VNA will overload the BJT and also port 2 of the VNA." Thank you, I'm doing this today with a NanoVna Btw, post #29, will this be the GMAX and K for that? I don't think so Attached Thumbnails