Today I spent some time breaking apart some TV transmitters. I was looking for power transistors. Opened one very strange module with heavy heat-sinks. This is the photo of transistors I found inside:
It is Russian made Gallium Arsenide power FET transistor mounted on heat-sink. Also some filters made on ceramics. Very nice and useless stuff unless your are making some ultra-high frequency transmitter (~3GHz). The prints on transistor are:
3ÐŸ610Ð‘-2, 3ÐŸ910Ð-2, 3ÐŸ910Ð‘-2.