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

paulsherwin · 5th Sep 2010, 11:39 am

The gain is a nominal figure and will vary quite a bit in different examples. An OC71 is a general purpose AF amp and an OC81D is specifically intended for use driving a pair of OC81s in a transistor radio, but they are really very similar transistors.

The audio stages in these homebrew designs will work with a very wide range of small signal Ge transistors.

5th Sep 2010, 11:39 am	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,947	Re: Transistor Choice in radio project The gain is a nominal figure and will vary quite a bit in different examples. An OC71 is a general purpose AF amp and an OC81D is specifically intended for use driving a pair of OC81s in a transistor radio, but they are really very similar transistors. The audio stages in these homebrew designs will work with a very wide range of small signal Ge transistors.