TKM MX170C, Owner'S Manual

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I. INTRODUCTION
This manual contains information on the TKM MX170(C), manufactured by TKM, Inc.
The information includes installation, operation, mechanical and electrical descriptions
and alignment and test considerations. The MX170(C) is authorized by the Federal
Aviation Administration to TSO C34e, C36e, C37d, C38d, C40c, and has met the test
requirements of RTCAlDO-160C.
A. Purpose of Equipment
The equipment is a 760 channel communication (COMM) transceiver for use in aviation
services and a 200 channel navigation (NAV) receiver to provide VOR / LOC signals to
navigational converters. The NAV receiver also provides frequency selection for remote
mounted Distance Measuring Equipment and Glide slope Receivers.
The MX170(C) is designed to be a direct replacement for the King KX170/ KX175.
The unit is dimensionally identical to the King units and can therefore use existing
aircraft installations. Except for improved performance characteristics, the unit is
electrically interchangeable with the King units and will provide the proper audio,
navigation and channeling signals for existing installations. New installations can
be made using KX170A installation kits.
B. Equipment Description
The unit features digital (LED) displays for active (yellow) frequency channel
and standby (red) frequency channel for both COMM and NAV.
For channel selection a MHz knob and a KHz knob are provided. For 25 KHz
increments in COMM, a 25 KHz button is provided. To activate COMM or NAV
frequency selection, an N -C button is provided, a tic appears in the selected
standby channel display.
Channel selection operates on the standby channel only. When the desired channel is
indicated in the standby display, it may be placed into the active position by depressing
the 'Flip-flop' button located left of the displays. The active channel is then placed into
the standby position.
The NAV receiver features a VC-ID button to permit selection of voice or ident
reception.
In the Ident condition a 'tic' is displayed on the active NAV channel display.
The COMM transceiver features a test button that overrides the squelch to verify
proper receiver operation and to allow reception of weak signals. Also provided on the
active COMM display is a 'tic' to indicate transmitter power output.
Power switches are incorporated with the NAV and COMM volume controls. The
COMM is the master power switch and the NAV provides power switching for remote
navigation units.