1/4" Two Frequency Two Speed 7.5 IPS NAB & 15 IPS NAB 250 nWb/m Operating Level
This 1/4" MRL Calibration Tape has two tones 1 kHz, and 10kHz each recorded for 84 seconds one time at 7.5 and then 15 IPS. NAB equalization. 250 nWb/m operating level. This is as basic a calibration tape that you will get but covers the most common adjustments you need, operating level and tape head azimuth. Made in USA. This tape ships from California.