Hi, all. The other day, I received a TPL 5010A linear amplifier that I thought would be the perfect match for my Realistic HTX-100 10 meter radio. All I could find spec. wise, is a picture of the amplifier on the internet, and what is printed on the side of the amp. It reads: Frequency: 21-30Mhz, Carrier Power Output 60W, PEP power output 140W, Modulation AM/FM/SSB. The two finals are Motorola SRF772. I obviously know the specs. of the amplifier, but can find absolutely no information about these transistors, or what an equivalent to them would be in case they ever go kaput. So, has anyone heard of them? No luck here. Thanks.