Hi Good Morning friends. It is Thursday , Sept. 27.  Time flies, it never lands.....In FB, Mr. Ben Naval Villoria started a group to discuss SSB. I sharing this nice circuit of VU3MPX which can be considered a modern day circuitry and simplified. It uses the MC 1496 that Motorola obviously developed for communications gear.

In regular MIXERS such as the one in the AM BCB radio, two frequencies F1 and F2 are mixed. The output in the MIXER are F1, F2, F2 + or - F2.(The original frequencies and their sum and difference).
Motorola came out with this IC where the original frequencies are cancelled out and outputs only the sum and difference. It is called a double balance modulator. Great for SSB application as the circuit of VU3MPX shows.