Complex sentence: He had one of the amplifiers from the prime focus of his first telescope, pictured above, probably the one used at 900 MHz, it was a compact point-to-point construction and used two R.C.A. type 955'acorn' thermionic valves.
Split into simpler sentences: He had one of the amplifiers from the prime focus of his first telescope. Probably the one used at 900 MHz, it was a compact point-to-point construction and used two R.C.A. type 955'acorn' thermionic valves.