This low noise preamplifier has a gain of 19 dB in the 30 MHz band. The circuit is from the 80s. Transistors are from the era, and equivalents can be used. The circuit consumption is 13 mA.
This circuit shows how to get 5 V under low current from an operating amplifier 741. I got this...
This circuit uses two JFET such as the BF244 or BF245 and has an excellent gain with small...
This circuit was found in the March 1995 issue of Electronics Now magazine. The circuit requires a...