FOR SALE QTY 1 - Zenith hi-pass filter for TV set antenna led-in. This unit is in a shielded metal case with F type connectors for input (fem) and output (male) to the TV set. Will help to reduce that nasty herringbone modulation and overload from your 375 watt AM rig when the XYL is watching TV in the next room! Available for $5.00 plus $2.00 postage.