Becker AR4201 STANDARD Installation Instructions

Installation Instructions for Becker AR4201 STANDARD, comm radio harness:
READ ALL THE INSTRUCTIONS BEFORE BEGINNING INSTALLATION.
1) '4201 SPEAK': Solder center conductor to (+) tab on 4- or 8-ohm, 5-watt speaker. Solder the shield wire to
the (-) tab.
2) '4201 AUDIO': Solder the center conductor to the audio hi tab, which is the only contact on the audio jack.
Solder the shield wire to the ground tab, corresponding to the jack's threaded portion. If this system is
installed in two places, these leads may be paralleled to the second.
3) '4201 PTT = Blu, 4201 Mic Hi = Wh, 4201 Mic Lo = Sh: All conductors of this multi-conductor wire go to the
mic jack. Solder the blue striped wire to the push-to-talk tab, which is the 'tallest' contact on the jack. Solder
the plain, white, wire to the mic hi tab, which is the 'shorter' contact on the jack. Solder the shield wire to the
ground tab corresponding to the jack's threaded portion. If this system is installed in two places, these leads
may be paralleled to the second.
(*) If installing a push-to-talk switch, use the single conductor, shielded wire, marked 'PILOT PTT'. Solder the
center conductor to the same tab as the blue striped wire (PTT = Blu) installed in this step. Solder the shield
wire to the same tab as the shield wire (Mic lo = Sh). Route and cut this wire to length and install the solder
sleeve and jumper wire to the shield. Solder the center conductor and shield wire to the tabs of the
customer-provided, push-to-talk switch. Activating EITHER the remote PTT switch OR the PTT switch on a mic
assembly connected to the mic jack will allow voice transition over the radio.
4) '4201 AUX IN': Solder the center conductor to the twisted wires on the resistors, already attached to the
small music jack. Solder the shield wire to the short, ground tab on the music jack.
5) '4201 LIGHT': If you wish to activate the backlight on the radio face, solder the 'Light' wire to one tab of the
normally open contacts of a customer-provided switch. Solder a +12 VDC wire to the other contact. When the
contacts close, the backlight in the radio face will be lit. If desired a dimmer pot may be used in place of the
switch. If no lights will be used, cap and stow this wire.
6) '4201 ICS': If you install this unit to two places, grounding this wire will activate the internal intercom
system and allow the two places to communicate with each other. To use the internal intercom, solder this
wire to one tab of a normally open switch and a ground wire to the other tab (both items customer provided).
Close the switch to activate the internal intercom and open it when transmitting on the radio. If the ICS will
not be used, cap and stow this wire.
7) '4201 GROUND': Attach this twisted pair of wires to, either airframe ground or a dedicated avionics ground.
This may be accomplished with solder or by installing a ring terminal and using the appropriate hardware.
8) '4201 POWER': Install an appropriately sized ring terminal and attach to the 'load' terminal of a 5-amp
circuit breaker. * ALWAYS check that the power supplied to the radio is correct as per the manufacturer's
requirements. *
9) Connect the 25-socket connector to the back of the radio with the self-contained slide lock.
10) Connect a coax antenna cable from the antenna to the BNC connector at the back of the radio.