As far as I know, you have to use stock communications currently because Haully isn't finished making Kerbalism's own Comm network plus from me testing it, it doesn't seem like ground stations are implemented yet for Kerbalism's comm network (personally I feel like that's cheating having a direct connection to kerbin anywhere. With Kerbalism's current comm network off it still will transmit data like download or upload speeds, but it won't increase the connection speed per antenna (so I early game antenna does 64kb/s but with it turned on you could have like 6 antenna's with each one doing 64kb/s which would total out to 384kb/s) but it will still decrease the connection speed the farther you are from Kerbin. Although Haully may have updated in the past day or so getting it to work.
@HaullyGames I'm happy to see that you took my advice on making your own thread <3 is there anything I could do to help you out? I don't know much about modding but I'm a fast learner
*EDIT* well crap i didn't notice that @HaullyGames didn't make this thread now I look stupid :-/