Magnadyne Switch Box (VCS-10)
Our Forseter 3051S MH came with a fancy video switch box to switch any of 5 inputs(ANT, cable, DVD, etc) to 3 outputs (TVs). I spoke with tech support at Magnadyne. To my surprise, even though this box has a 12v input, it DOES NOT provide any amplification of the TV antenna signal. This switch box essentially is a set of mechanical switches. The 12v is only used to convert the S-video / audio signal from the DVD player into a RF signal that is put onto the coax output ports. In other words, if your coach does not have a separate antenna amp box (eg, Winegard RV7012 wall plate, SensarPro signal meeter, or similar) it likely does not have an amplified antenna signal! The Magnadyne box will pass thru an amplified antenna signal (12vdc max) so it should be OK to add an amplifier to the antenna.