I built the "Two by Two" Preamp from Popular Electronics in 1967 as a very young
kid. Bought the 2N404 PNP Germanium transistors at I think Allied Electronics
walk in store. First time etching a PC board and it worked, but was very noisy.
2N404 is a switching transistor:
http://www.swtpc.com/mholley/PopularElectronics/Mar1967/PE_Mar_1967_pg70.jpg
I have a very old copy of IsSpice that might have some Germanium models, not sure.
kid. Bought the 2N404 PNP Germanium transistors at I think Allied Electronics
walk in store. First time etching a PC board and it worked, but was very noisy.
2N404 is a switching transistor:
http://www.swtpc.com/mholley/PopularElectronics/Mar1967/PE_Mar_1967_pg70.jpg
I have a very old copy of IsSpice that might have some Germanium models, not sure.