As old as this radio is , it was a virgin , tuned up very nicely 5 to 20 at 100% modulation. Receive acts like the RF-gain is turned down ? the pots seem good to go and are set as they should be. (I've had a few radios over the years like this one , but it was usually just a adjustment to one of the cans in the radio) So if it were to be a part in the radio , IM asking what that part might be for me to change if that should be the case ? thanks SK