[R-390] Newbie needs help

[Mike Bracey]

I need some direction from the gurus please. My 390a works fine in every respect except for distorted audio on the broadcast band. All other bands are fine. It is the same no matter what the settings on RF or AF gain. Bandwidth has no effect. All tubes check good. It's hooked up to a 40' inside long wire antenna. Could someone point me in the right direction?
 
Thanks,
 
Mike, KE5YTV