Posted by Frippe [141.101.79.157] on Wednesday, September 14, 2016 at 06:29:46 :
In Reply to: WC mystery holes ? posted by Bob in N.GA [173.245.50.166] on Monday, September 12, 2016 at 20:09:34 :
More information can be found if you google for a pdf named "TM 9-808" and download it. Look for section XXIII (Radio Interference Suppression). Page 212 contains a picture.