TIU Output

The RF Out Of Range is likely the remote to TIU communication, not the track signal.

No signal booster for the TIU.  We've discussed it, but it's a very complicated concept given the characteristics of the DCS signal.

There is a TIU channel tester that was created to check the health of the TIU signals, it's especially important for the Rev. L models, they seem to have the most issues with the driver chips.

Design of a $10-20 DCS-TIU Port Tester Tool?

If you check in that thread, Tom (rtr12) is selling kits for the little board so you can test the signal strength of your TIU channels.

VAR should also give 10s.  So if FIX gave 10 on test, and Var gave less on test, possible degradation on the VAR channel. Try F2 and V2 also.  Lots of reason a signal can be bad on a layout though.  G

Output on FIX 1 & 2 is 10.  VAR 1 & 2 is 8.  There appears to be a signal degration from the last time I checked the Loops on the VAR circuts.  

Have you swapped the channels on the TIU to see if the signal issues follow the track or the TIU?

No,  but will do.