Power issues?

[Mikedupproductions]

I am working at a venue running a whole hog pc dongle, with this all the fixtures work correctly. I have taken the address listed (which I recently went through the whole setup) & put them into show express. I am having issues with it.

The room is about 40x120, there is 20 fixtures & about 600ft of cable (the installers left a bunch of extra). Of course there is a terminator at the end. The last 7 fixtures are not responding to what I have setup as is seen in the program. Such as, the mega panels when the red channel (channel 1) is raised, one will turn green, 2 will go blue & one will strobe multi. It seems that most of the fixtures are responding to the appropriate channels but not receiving the correct data. Any ideas?

[support]

Looks like missing dmx signal power.
We suggest you to try with a "dmx booster" (just before the last 7 fixtures).

[Mikedupproductions]

Is there one you would recommend? Or are they all pretty much the same?

[support]

No.
Please ask your retailer to suggest one.