Enable use of other frequencies from test records
3.15KHz is not a frequency found on most test records. It would be a big help to be able to enter the stated frequencies of test record tones as opposed to your record's 3.15KHz.
1kHz test signal is now also supported in PlatterSpeed for iOS (V 2.1.1)
Damien Cassidy commented
I second this as ait would also be useful for calibrating the speed of tape machines