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Important User Operation Notes
For KRK-13 Dual Head Configured Mobiles
• NEXEDGE®: NX-700/NX-800 Series, NX-900/901
• P25: TK-5720/ TK-5820
[This document supplements the mobiles user Instruction Manual
The NX-x00 and TK-5x20 series mobiles are single control head designs. The KRK-13 Dual
Head Interface kit adapts the mobiles existing I/O interfaces to convert it to a dual head
configuration without major internal circuit modifications or additions. However in comparison
to a Kenwood dual head designed mobile, a KRK-13 Configured mobile is distinctly different
in the way certain mobile features and audio behave between Head 1 and Head 2, how
Head 1 & Head 2 affect each other under certain conditions and how a few features operate
differently in general. It is important that all operators be advised and trained on this
information.
1) Primary Head (1) operates the same as the dash or single head remote mount
configuration.
2) Operations limited to ONLY Head 1:
a. Programming (both data file and firmware)
b. Key Loading
c. Test Mode
d. Clone Mode
e. Com port Number 0
3) If the KRK-13 D.C. supply line losses power then both heads will become inoperable
until power is restored to Head 2 and the RF deck power is cycled off, then on again.
If possible the supply source to Head 2 and the RF deck/Head 1 should be the same.
4) The Volume level is displayed in the LCD of both Heads, however Head 2 does not
emit Volume adjustment tones (escalating / deescalating beeps). Operators should
i
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