I am running a helix 7 on tm and a new helix gen 2 on console. Noticed over the weekend when I am on tm I get interference on the helix 9 even tho they are not connected in anyway..i know I've been getting it on the 7 and trying to fix that but why would the 9 on the console be affected? Second question is how many amps or volts do these units pull as last couple times out if I'm sitting anywhere with them or at least one of them on for 20 -30 min low voltage alarm goes off. Battery is always charged as I have it on a onboard charger. Have checked voltage on battery and checked voltage regulator it's working fine. Battery is a interstate deep cycle that's only a year old...thanks