Thanks for the info. I gave the physical channel numbers.
Preamp: CM-7777
Antenna: CM-4228
My buying guide has been hdtvprimer.com.
Channel Master 4228
I chose this antenna since I needed some hiband vhf gain.
vhf KNIN-DT 9.1 CW CALDWELL, ID 32° 10
vhf KTVB-DT 7.1 NBC BOISE, ID 32° 7
uhf KBCI-DT 2.1 CBS BOISE, ID 31° 28
uhf KAID-DT 4.1 PBS BOISE, ID 31° 21
vhf KTRV-DT 12.1 FOX NAMPA, ID 32° 13
I am 10 miles from the tower but behind a hill and some power lines. By using a 30 ft. mast I get a little closer to line of sight and clear the power lines (which are far from my antenna out at the street :+>).
I don't know what's going on exactly -- too strong, multipath etc. Too bad re the tv tuners, just wondered if the vbox was ok.