User Manual
065 75$16&(,9(5 ; $ ; $
Operator’s Manual • Use under Special Conditions
– 3.4 – 6076.0822.12.01
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The Audio Frequency Interface (part of Radio Basis KR 4400) provides the following resources:
q four keylines
- PTT_1L (contact X26.10)
- PTT_1 (contact X26.18)
- PTT_2L (contact X25.10)
- PTT_2 (contact X25.18)
q four audio lines (narrowband, wideband)
- NB1 (contacts: Tx = X26.1 and .2; Rx = X26.3 and .4)
- NB2 (contacts: Tx = X25.1 and .2; Rx = X25.3 and .4)
- WB1 (contacts: Tx = X26.6 and .7; Rx = X26.8 and .9)
- WB2 (contacts: Tx = X25.6 and .7; Rx = X25.8 and .9)
Resources are activated in Menu 550 (PTT COMLINE MAPPING) for keylines and in Menu 560
(AUDIO MAPPING) for audio lines. Please note that each resource can be assigned only once.
That means that if for instance the resource PTT 1L is assigned to device A, it cannot be as-
signed to device B at the same time.
Keylines may also be defined to be low or high-active.