This circuit was found in an 80's Electronic Design. It amplifies TTL fast signals for a coaxial cable. TTL is from the S (Schottky) line and transistors are types of the time.
This circuit was obtained from a 1965 Radio Electronics. The semiconductors used admit modern...
For the 7 to 10 MHz band L1 is formed by 3 turns of 22 to 28 AWG wire in a ferrite core 15 to 20...
This 2005 circuit from a Linear Technology manual makes use of the LTC610HV and an optical coupler that...