This circuit was obtained in a QST magazine from the 90s. The circuit makes use of components that are uncommon today. The circuit includes a gain selection switch.
Suggested by Burr Brown in 1969 documentation, this circuit makes use of an integrated component...
We found this circuit in the June 1988 Radio Electronics magazine. The power supply must be...
This circuit was obtained from a 2005 Linear Technology manual. The circuit is self-powered and can...