SB-892 TM-411 Low/No Receiver Sensitivity 2-14-85 Some users of the TM-411 have reported a loss of receiver sensitivity. This may occasionally be traced to a loss of oscillation in the 2nd Oscillator, L29, on Unit A. Changing the below listed parts should correct anly loss of sensitivity due to problems in the 2nd Oscillator. O A Unit (X44-1600-00) change the following parts: XTAL L29 to L77-0873-05 C15 to a 1.5 pf cap. C54 to a 33 pf cap. Time required for this modification is 1/2 hour or less. CLM (c) 121589TKC