Bad box or low signal?

[JeremyC]

I hooked up 2 T.V.'s to 2 seperate converter boxes. I have a new antenna and a new preamp. Both sets work great except for one channel on one T.V. Channel 4 on one set never gets above 50 on one set but it's much higher on the other. The same box with the bad channel 4 picks up all the other channels really good. Channel 2 is like 94% Channel 5 is like 88%. Zip code is 55079. Converter boxes are both digitalstream DTX9950. I am using channel 3 on T.V.'s to advoid interferance from channel 4 analog signal. Is the signal going to be stronger after the transition? Do you think the box is bad for one channel?

[hdtvlabs]

More likely cable's fault ... Is the cable running to the faulty box longer than the other? How do you split the signal? I would try a distribution amp.