Hi-Fi Stereo FM Transmitter

[Al Skierkiewicz]

Bill,
Does the transmitter light a stereo light on a receiver very close to the transmitter? If not, this is usually an indication that the 19 kHz pilot carrier is not functioning. If the receiver does not see the pilot it does not try to decode subcarrier. If the close in receiver does come on in stereo, the pilot injection may be too low. All of this is to prevent unwanted noise in receive when the signal to noise on the subcarrier is low. Thoughts were, a quiet mono signal was better than a noisy stereo. It may indicate that the 38 kHz crystal is defective.