Sorry for the delay - here it is:


This was one I designed for NRG back in about 1999.  Both the subcarrier and the pilot generation are oversampled for purity.  The distortion is very low, the stereo image is fabulous, and the harmonic products are well suppressed.  It's about as good as you can get with cheap CMOS and a couple of NE5532 low noise dual op-amps.  The supply used an external "wall wart" providing low voltage AC to the board.  This is half-wave rectified - either way, to derive +/- 15V.  A couple of resistive droppers and zener clamps provide +/- 7.5V for the logic ICs.

There were jumpers on the board to select 50µs or 75µs pre-emphasis, and we used passive Toko 15 kHz lowpass filter modules to make certain that no audio content would interfere with the 19 kHz pilot (or cause aliasing products).  Those filters were originally designed for use in tape recorders to prevent  the tape bias signal beating with the 19 kHz pilot if you were recording from the radio!