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Hi All! The station's frequency response is transmitted from delay of 250-275 ms duration 90 ms. Information is transmitted multi-frequency using the "intervalless packet" method. When these are two identical code combinations cannot follow one another. Code combination "13" marks the beginning and the end of the information package. Package contains 10 digits, the meaning of each digit stated below: 01 digit - subscriber category 02 digit - number units 03 digit - tens number 04 digit - hundreds number 05 digit - thousand number 06 digit - 3rd digit of the station index 07 digit - 2nd digit of the station index 08 digit - 1st digit of the station index 09 digit - beginning-end of transmission 10th digit - subscriber category All information is encoded based on six base frequencies: F0 - 700 Hz F4 - 1300 Hz F1 - 900 Hz F7 - 1500 Hz F2 - 1100 Hz F11 - 1700 Hz Base frequencies may vary +-15 Hz. Duration 40 ms, level -6.5 to 27.4 dB. The information is encoded as follows: "1"-F0F1 "6" -F2F4 "11"-F0F11 "2"-F0F2 "7" -F0F7 "12"-F1F11 "3" -F1F2 "8" -F1F7 "13" -F2F11 -beginning "4" -F0F4 "9" -F2F7 "14" -F4F11-repeat "5"-F1F4 "10"-F4F7 "15"-F7F11 Signal "Request number" with a frequency of 500Hz and level 4.3 dB with a duration of 1.8 s ▌▌║▌█▐│▌▌▐▐ WiTh The BeST wIsheS fROM ▌▌║▌█▐│▌▌▐▐ *C*R*E*A*T*O*R* ▌812/03.00▐ -+- zxasm+ positive