[Milsurplus] MC-619/AN-190?

[Gene Smar]

Gents:

     I've been assembling a PowerPoint presentation on military squad radios for delivery at my local radio club's meeting sometime in the spring (and if you're nice, maybe at Gilbert in the fall.)  (FWIW - I'll be covering the following:  BC-611, PRC-6, -10, -25, PRT-4/PRR-9 and CPRC-26.)

     Can anyone tell me what was the purpose of the MC-619 DF Mod kit for the BC-611?  I KNOW it was for DF'ing (so sez TM11-235 and common sense), but what was the source beacon?  I thought I had read somewhere authoritative (like Wikipedia LOL) that the 101 and 88 Div Paratroopers used them to home in on RF beacons set up by the pre-dropped Pathfinder 'sticks'.  But those beacons, RT-44/PPN-1A's, operated in the VHF range.  

     I'd hate to have to drop the reference to the -611's DF loop from the presentation, but I don't want to offer unsubstantiated info to the audience.

     Thanks for any help.

73 de
Gene Smar  AD3F