You may like to read "A simple low-cost linear demodulator for DSB-SC" on:

https://en.wikipedia.org/wiki/Talk:Double-sideband_suppressed-carrier_transmission

As you will find out, it is much easier to implement it than the well-known Costas Loop or Squaring Loop.

If you have good knowledge in electronics, as it seems you have, you can implement rather easily each function-box of this simple DSB-SC demodulator (I used it already for my private short range RF links in the 80's when I had no phone line at home).

Kerim

You may like to read "A simple low-cost linear demodulator for DSB-SC".

As you will find out, it is much easier to implement it than the well-known Costas Loop or Squaring Loop.

If you have good knowledge in electronics, as it seems you have, you can implement rather easily each function-box of this simple DSB-SC demodulator (I used it already for my private short range RF links in the 80's when I had no phone line at home).

Kerim