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There are lots of transistors that start with MRF and some of them are counterfeit parts that can't even begin to work as well as the Motorola parts. The transistors that are used in the RFX150 work very well.

AB biased and sound good on SSB. This is the way to go if you work for a trucking company that prohibits modification of their trucks. With the RFX150 you don't have run heavy and noticeable wires to feed it. In this case LESS is MORE.