3 tv - 2 inside 1 outside separated by A-B switch

[robertjfoley55]

The one outside only gets 12 channels. When I switch to indoor the other set get 69 channels. Outside antenna. Sanyo-fw32d06f b

 

[americanaudiophile]

Try connecting it to the antenna that you now have on one of the indoor TVS. That will tell you if the Sanyo TV tuner isn't as good as the others have
If it works well then you need an antenna distribution amplifier that will compensate for the loss in splitting the antenna and the cable.