This 80's circuit can be implemented with modern equivalent FETs with lower on resistance. The attenuation is 80 dB at 100MHz.
This is one of the possible configurations using the LM139, 239 or 339 voltage comparators. The...
Have you not yet memorized the color code used to identify resistors and capacitors? Do you have...
Found in American documentation from the 90's, this circuit consists of a solid state relay with...