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b. Head 2 – Volume control is functional
10) During list/menu scroll operations:
a. Head 1 – Volume control is not functional (normal behavior)
b. Head 2 – Volume control is functional
11) Control tones may not be heard from one or either head while the controls on both
heads are being operated simultaneously.
12) Volume adjustment on Head 1 will mute Head 2 speaker output.
13) There is no user feedback or warning if users attempt to transmit from Head 1 and
Head 2 simultaneously.
14) When users attempt to transmit from Head 1 and Head 2 simultaneously, both
microphone modulations will be transmitted over the air.
15) Emergency Mode:
a. In Silent Emergency Mode:
i. Head 1 will not pass receive audio (normal behavior)
ii. Head 2 will pass receive audio
b. During emergency mode transmit audio from both Head 1 and Head 2 is
passed regardless of PTT key state (hot mic).
c. While Emergency Mode is active:
i. Head 1 volume control does not work (normal behavior)
ii. Head 2 volume control works
16) Programmable control and supervisory tone levels under Optional Features apply to
the audio output level of Head 1 ONLY. Head 2 is not affected.
17) Use of the programmable SQUELCH key will output audio to both heads.
18) AUX I/O Speaker Mute only affects audio output of Head 1.
19) AUX I/O input for External PTT is activating:
a. Head 1 Volume is disabled (normal behavior)
b. Head 2 Volume is not disabled
20) The Fixed Volume PF key function is only available in Head 1
21) Only compatible NEXEDGE NX-700/800/900/901 mobiles with firmware version
K2.00.00 or higher can be configured with a KRK-13 Dual Head interface.
22) Only compatible P25 TK-5720/5820 mobiles with firmware version K1.00.00 or higher
can be configured with a KRK-13 Dual Head interface.
iii
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