| Year | 1952 |
| Date | 05-Jun |
| Volume | 106 |
| Issue | 2,663 |
| Page | 729 |
| Category | Electronic |
| Part | |
| Title | A Portable Tape Recorder |
| Author | Raymond F.Stock |
| Notes | With Notes on Magnetic Recording. Amplifier chassis, circuit of power unit, uderside of deck, the power supply and oscillator, layout of power pack |