Thanks Evan.
Here's another LT-6G photo with a different antennae set up - AS313/ARN-6 aft with an AN-104B VHF antenna forward (instead of that blade antenna). On page 149 of Dan Hagedorn's North American's T-6: A Definitive History of the World's Most Famous Trainer, a USAF markings diagram for the LT-6G is shown ... with AN-104B and ADF 'football'.