"Quick Call" Tones, Code Type "Y" Tone Groups
| A Series | B Series | Z Series | GE A Series | GE B Series | GE C Series | ||||
| Tone No. | Reed | Freq | Reed | Freq | Reed | Freq | Freq | Freq | Freq |
| 1 | DA | 398.1 | DB | 412.1 | DZ | 384.6 | 592.5 | 607.5 | 712.5 |
| 2 | EA | 441.6 | EB | 457.1 | EZ | 426.6 | 757.5 | 787.5 | 772.5 |
| 3 | FA | 489.8 | FB | 507.0 | FZ | 473.2 | 802.5 | 832.5 | 817.5 |
| 4 | GA | 543.3 | GB | 562.3 | GZ | 524.8 | 847.5 | 877.5 | 862.5 |
| 5 | HA | 602.6 | HB | 623.7 | HZ | 582.1 | 892.5 | 922.5 | 907.5 |
| 6 | JA | 668.3 | JB | 691.8 | JZ | 645.7 | 937.5 | 967.5 | 952.5 |
| 7 | KA | 741.3 | KB | 767.4 | KZ | 716.1 | 547.5 | 517.5 | 532.5 |
| 8 | LA | 822.2 | LB | 851.1 | LZ | 794.3 | 727.5 | 562.5 | 577.5 |
| 9 | MA | 912.0 | MB | 944.1 | MZ | 881.0 | 637.5 | 697.5 | 622.5 |
| 0 | CA | 358.9 | CB | 371.5 | CZ | 346.7 | 682.5 | 652.5 | 667.5 |