2 things...
1. It does work ...(with limitations)...
Ehrler's use of XNT-9-DI-T transducer with 1198?
http://www.crappie.com/crappie/side-...rimenting.html
2. HB cannot guarantee the safety of your unit with you connecting accessories to your unit that are not specifically designed to work with your unit...(HB has to say this for their warranty obligations)...
Now...will it "jack" your unit (as you call it)...??...There is no definite answer...
Some (including myself) have been running several different xducer experimental configurations without adverse effects to the unit or the xducer for some time now...
I'm even running the Lowrance LSS 2 "skateboard" xducer on my 1197....
Your decision to configure any experimental xducer setup is completely up to you...
Rickie