No Full Stereo Seperation ..????

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Hello Guys..!

i had designed a stereo coder based on the convetional L and R switching concept... 76 Khz was produced with 4060 oscillator by using a rare 4.864 mhz crystal...

L, R switching is with the help of 4066 IC by using two 38 khz opposite waveforms generated by 4013 freq. divider.. Pilot tone was filtered using 19 khz 4th order passive RC lowpass filter (R = 8.2K, C = 1nF)..

i didnt use any bandpass filter for filtering of the composite L R signal.. as i wanted complete stereo seperation first.. even if my Tx o/p power had been wasted by unnecessary harmonics..

At my stereo FM, got the stereo seperation... but not adequate. Atmost the seperation might be 30db.. The left channel can be clearly heard in the right(although with considerably less intensity)..

Can anyone guess the problem.???

___________________________
Prasanna Rao..
India
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.