Pops and I finished the remote mount for the second COM radio, a Garmin GTR 20. This is on the right fuselage sidewall, one bay aft of baggage bay. The bottom support angle is 10 inches long and is riveted to the longeron with 9 solid rivets.
The upper support angle is attached with three #8 screws and nut plates to the top longeron. The mounting plate is .040 2024 is riveted to the top support angle and screwed to the lower angle with 4 #8 screws.
Radio temporarily mounted. The top two screws go through the upper support angle.