MARKA-SWEEP

SWITCHING APPARATUS FOR SELECTING ANY ONE OF A NUMBER OF R.F. CHANNELS AS WELL AS GIVING A CORRECT PICTURE AND SOUND CARRIER MARKERS FOR ADJUSTING THE SHAPE OF THE PASS BAND OF AN AMPLIFIER AND THEN DISPLAYING SAID SHAPE ON A CATHODE RAY TUBE. THE APPARATUS IS TO BE UTILIZED IN CONNECTION WITH TESTING AND ADJUSTING RADIO, TELEVISION, AND ASSOCIATED EQUIPMENT