If you go to use it in the house, those little Humminbird power supplies they sell on Ebay aren’t big enough to run the 1197. If you buy the Humminbird PC kit, don’t, repeat don’t, use the power cord with the two 9vlt battery connectors. It won’t run it long enough to do squat. Always up date the software by putting it on an SD card and turning the unit on after you insert it. Wham Bam its done. If you do get the PC kit, cut those connectors off the first thing and put a 3 amp fuse on the plus lead and two female spade connectors. Fits on those 7.5 AH batteries you use ice fishing perfectly. Then you can take it any where your heart desires to play with, the batteries are sealed so you don’t have to worry about them leaking.
WarrenMN
Side note. I found out where all those Humminbird power supplies came from. They aren’t meant for personal use. They were to be used with the displays at retailers, different FCC rules apply about radio emissions.