Last year in October when I bought my new boat I went ahead and got a new HB 1198 to put up front. I already had a HB 798ci si that I put on the console. I figured what the heck bigger screen for some old eyes up front. I could never get good clarity on the 1198 like the 798 had even after one number at a time changing settings. And then the RF interference started when I had the Terrova running after I re-routed my transducer cable thought the slot on TM. I did that because day one of owner ship I almost cut the transducer cable when deploying. I read all about RF inference and was putting off having to re-rote power cables, etc to get it to go away. Well last week I decided I'd put the 1198 on the console & the 798 on the TM. Wha -La , no more RF inference on the 798 mounted on TM. The 1198 still picks up RF interference even on the console when the trolling motor is running. Not a big thing there because it doesn't with the main engine running. Problem solved as far as using trolling motor is concerned. I'm still puzzled why one would pick up the interference aand the other won't. Same everything hooked up. I'm thinking the 1198 w/ HD is much more sensitive that the 798 without HD. Oh well I'm happy with results and clarity on the 1198 is great now but I do run dual transducer on stern. Just thought that may be of interest to someone. Happy Fishing!!
