Maas AHT-28-V User Manual page 61

Picture 5 and Picture 6,
Picture 5: 2tone as transmitting encoder
As single tone calling, only input A Tone (e.g. A Tone is 1750 Hz), no need to input
in another Tone. The Tone in "Group Call" should be the same to the Tone of
encoder (900.3MHz).
Step 3: Set the optional signal of the desired channel to be 2-Tone. Click "More" after every
frequency you edit, program it in the popup. (Picture 7/8)
Picture 7: Select group 0 as 2-Tone
Group 0:2 tone
Group 1: single tone
Picture 6: 2tone as receiving decoder
Group 0:.2 tone decoder
Group 1: single tone decoder
Picture 8: Select group 1 as single-tone
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