This is only of historical interest but de rigueur for a website.
700 | 900 | 1100 | 1300 | 1500 | |
---|---|---|---|---|---|
900 | 1 | ||||
1100 | 2 | 3 | |||
1300 | 4 | 5 | 6 | ||
1500 | 7 | 8 | 9 | 0 | |
1700 | ST3 | ST2 | KP | KP2 | ST |
And of course there is the tandem frequency of 2600 Hz.
1209 | 1336 | 1477 | 1633 | |
---|---|---|---|---|
697 | 1 | 2 | 3 | A |
770 | 4 | 5 | 6 | B |
852 | 7 | 8 | 9 | C |
941 | * | 0 | # | D |
Note that there is a step of exp(0.1) between each frequency and a step of exp(0.25) between the lower and upper bank.