I figured it was related to the fridge cycling on and off. More data points probably would've been beneficial, but its tough to do if you have a day job. Thanks for the clarity.
John (brussum), KL3JC
2002 Ford F350 Lariat, 4X4, 7.3L TDI, 2" lift, 35" GY MTRs, 4.10 gears, TJM bullbar and 12,000 lbs Warn winch, ARE shell, Yaesu FT-1900, external auto trans and coolant filter
2004 Ford Expedition Eddie Bauer 4x4 (the wife's family truckster)
2008 Toyota Land Cruiser, BajaRack, IBS dual battery system, Yaesu FT-8900
1990 M101A2 Expo Trailer (in the making)
IRLP node 7036, Alexandria