Just the opposite of what I believe is true. It's the "stinger" (coax center conductor protruding from the male connector) and what that's inserted into in my mind that indicates the gender, and I always considered an F-81 a F/F adapter. So the cable is usually terminated with a male connector. I would have said "always" but the OP might have a different situation ??
But maybe I've been wrong for the past 30+ years ??
To the OP - is it possible you have cables terminated with (what I call) male connectors and each one is screwed into an F-81 F/F barrel ??
You know what, it's funny you mention that. I never knew this was possible but my friend who I am installing for said the same thing that you did about the males possibly being connected to the F-81 F/F barrel. I will let you know if that's the case when I go over there. Thanks!
Sorry, mjstraw, but everything in this post is wrong (except "I may still be confused")! Gender is not based on the threads, but upon the signal conductor.
To the O.P., are you sure the "splitter" you refer to (on one of the lines from the dish) isn't a diplexer? That would make sense if the original installation was using a downfeed from the dish to backfeed the second room from a dual-tuner receiver. There would, of course, have to be a second diplexer at the receiver.
Brad
edit: Bhelms, you beat me to it!
Well it definitely said "splitter" on there and it was made by Monster. Unless Monster makes diplexers and it says "splitter" on there? I will have to check into this piece in more detail when I get there. Thanks!