[rabbit73]

I like Mike's idea of a preamp for UHF, but not for the stronger VHF signals, using separate antennas.

You can make a preliminary test with what you have now to see what it will do with KTMF if you limit the Stacker to receive UHF only.

Test No. 1
 Stacker > 
          \ UHF
           UVSJ > LNA200 > coax > power > TV
          /                      inserter
 VHF input of UVSJ not used

Using Mike's idea:

Test No. 2
UHF Ant > FM trap > preamp > 
                            \
                            UVSJ > coax > power > TV
                            /            inserter
     VHF Antenna > FM trap >
UVSJ must pass power on UHF side like
Radio Shack 15-2586 or
Antennas Direct EU385CF

http://www.radioshack.com/vhf-uhf-go...r/1502586.html

but that will not keep the strong VHF signals that come in on the UHF antenna out of the preamp, so I prefer this which uses the UVSJ to keep VHF and FM out of the preamp:

Test No. 3
          UHF Antenna > 
                       \
                       UVSJ > preamp > coax > power > TV
                       /                     inserter
VHF Antenna > FM trap >

There is the possibility that if Test No. 1 gives you KTMF, you might be able to modify the Stacker to use the UHF and VHF sections as separate antennas.