This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was found in a 1980s documentation. The diodes are commonly used.
Featuring an 8 MHz passband, Texas Instruments TVS912A operational amplifiers can be found at...
This 3 + 3 V symmetrical source circuit uses an old operational amplifier. The circuit is from an...
This dual-band receiver was found in documentation from the 1970s. The original transistors are...