I'll bet the terminators (not Ahh-nold) will help.

Congratulations, Mathew, on taking this project to a relentless pursuit of perfection!

I have a case of mild IMD in the Winegard DA-825 82 channel distribution amplifier I use between my TV/FM roof antenna and a number of FM radios in my home lab.

I had never noticed an IMD problem on any of the FM radios I used with the distribution amp, until I used a radio with very little limiting built-in. Then, the strongest FM station was audible all over the FM band. Improving the limiting action in that radio hid the IMD problem again.

-Joe

Hello mattew,
I'm also building a setup like Tom's using Dtv converters and A 300 disc pioneer dvd changer this summer .
I'm going to put the rack in my laudryroom hang it fromn the ceiling thats where my antenna disbution system is now.

Rich
P.S.Mattew I have a apartment channel master amp could us .
I may buy a actice blonder tongue off of ebay instead of my passive one.

Will see how my system works this summer I also still may move to eastern wash if I do then I can set the system up on a 285 acrea ranch

You need to use an FM trap, right at the antenna. That usually helps. And, some amps have a built-in FM trap. I'd use both.