BOEING377 at aol.com wrote: What gear is added to turn an MN 26 DF into an ADF? > Mark OK, I lucked out and found the MN-31 ADF manual. Here's the list: MN-31 Loop Control MN-36A Automatic Loop MN-28 Control Box MR-57A S meter MN-37A Azimuth Indicator There is also a loop dehydrator and a loop transmission cable. -John