"RECORD HEAD TRANSFERS THE ELECTRICAL IMPULSES PRODUCED BY THE RECORD AMPLIFIER DIRECTLY ONTO THE MAGNETIC TAPE MEDIA; THESE ELECTRONIC SIGNAL ARE RECORDED AT 2.0 MHZ & A CONTROLLED SPEED OF 120 IPS; IT IS A 7 OR 14 CHANNEL RECORD HEAD ASSY,INTERLACED FOR 1 IN. MAGNETIC TAPE; THE RECORD HEAD ASSY IS MOUNTED DIRECTLY TO THE BASE W/O AZIMUTH ADJUSTABLE SHOE OR SCREW"