Jupiter Avionics wiJAC2-T41 User manual

Rev
B Page i
-T41(JB66/JB67)
Wireless Intercom System with
Transceiver Connection - 4 User - N America
Operating Manual
Rev A
Jupiter Avionics Corporation
1959 Kirschner Road
Kelowna BC
Canada V1Y 4N7
Tel: [phone]
Toll-Free: 1 855 478 2232
www.jupiteravionics.com

wiJAC2-T41 Wireless Intercom System with Transceiver Connection - 4 User - N America
Operating Manual
Rev A Page ii
Copyright 2020 Jupiter Avionics Corp.
All rights reserved
Jupiter Avionics Corporation (JAC) permits a single copy of this manual to be printed or downloaded for the express use
of an installing agency. Any such electronic or printed copy of this manual must contain the complete text of this copyright
notice. Any unauthorized commercial distribution of this manual is strictly prohibited. Except as described above, no part
of this manual may be reproduced, copied, transmitted, disseminated, downloaded, or stored in any storage medium for
any purpose without the express prior written consent of JAC.
RECORD OF REVISIONS
Revision
Rev Date
Description
ECR
A
Jul 2020
Initial release, Serial number 1001 and higher.
7139
Prepared:
DGB
Checked:
Approved:
IMPORTANT:
Information in this document is subject to change without notice.
To confirm the current revision status of this manual, visit the JAC website:
www.jupiteravionics.com

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Table of Contents
1Introduction .................................................................................................................................................................... 1
1.1 Unpacking ............................................................................................................................................................... 1
1.2 Verify Operating Region .......................................................................................................................................... 1
1.3 Verify Pairing Registration Number......................................................................................................................... 2
2 The wiJAC2-T41 Components ...................................................................................................................................... 2
2.1 JB66-001 Headset Adapter (JB66) ......................................................................................................................... 3
2.1.1 JB66 Controls.................................................................................................................................................. 3
2.1.2 JB66 Connectors............................................................................................................................................. 4
2.1.3 JB66 Annunciators .......................................................................................................................................... 4
2.1.4 JB66 Internal Adjustments, Annunciators and Connectors............................................................................. 5
2.2 JB67-001 Intercom Adapter (JB67)......................................................................................................................... 6
2.2.1 JB67 Controls.................................................................................................................................................. 6
2.2.2 JB67 Connectors............................................................................................................................................. 6
2.2.3 JB67 Annunciators .......................................................................................................................................... 6
2.2.4 JB67 Internal Adjustments, Annunciators and Connectors............................................................................. 7
2.3 Other Features (Both units)..................................................................................................................................... 8
2.3.1 Battery Lid Release ............................................................................................................................................. 8
2.3.2 Belt Clip ............................................................................................................................................................... 8
2.4 Batteries (for both JB66 and JB67) ......................................................................................................................... 9
2.4.1 Inserting or Replacing the Batteries ................................................................................................................ 9
2.4.2 Charging Batteries in the Unit ............................................................................................................................. 9
2.4.3 Charging Operation – via Battery Charger.......................................................................................................... 9
2.4.4 Rechargeable Battery Kit .................................................................................................................................. 10
2.4.5 Battery Cautions and Warnings .................................................................................................................... 10
3 Connecting the wiJAC2™ System ............................................................................................................................. 11
3.1 wiJAC2-T41 System with a Transceiver ............................................................................................................... 12
3.2 wiJAC2-T41 System connected to Aircraft Audio System .................................................................................... 13
3.3 wiJAC2™ Set-up and Connection......................................................................................................................... 14
3.3.1 Insert Batteries .................................................................................................................................................. 14
3.3.2 Attach Connectors to Aircraft and Headset....................................................................................................... 14
3.3.3 Turn On Adapters and Verify Connection ......................................................................................................... 14
3.3.4 Verify Audio Operation ...................................................................................................................................... 14
3.4 wiJAC2™ Adjustments and Pairing ...................................................................................................................... 15
3.4.1 Pairing Process ............................................................................................................................................. 15
3.4.2 Purging Process ............................................................................................................................................ 16
4wiJAC2™System Operation ....................................................................................................................................... 17
4.1 Overview ............................................................................................................................................................... 17
4.1.1 Listening Operation ........................................................................................................................................... 17
4.1.2 VOX Speaking Operation .................................................................................................................................. 17
4.1.3 ICS PTT Speaking Operation............................................................................................................................ 17
4.1.4 Live Speaking Operation ................................................................................................................................... 17
4.1.5 Low Battery Warning ......................................................................................................................................... 17
4.1.6 Operation during Charging................................................................................................................................ 17
4.1.7 Loss of Audio..................................................................................................................................................... 17
4.1.8 Battery Life ........................................................................................................................................................ 18
5 Compliance Statements .............................................................................................................................................. 18
5.1 FCC compliance statement................................................................................................................................... 18
5.2 Industry Canada compliance statement................................................................................................................ 18

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wiJAC2-T41 Wireless Intercom System with Transceiver Connection
- 4 User - N America
1 Introduction
This manual contains the operating instructions for the wiJAC2-T41 Wireless Intercom System with Transceiver
Connection - 4 User - N America.
The diagram below describes the naming method for the different systems.
wiJAC2-T 4 1
The wiJAC2-T41consists of up to four JB66-001 Wireless Aircraft Headset Adapters, and one JB67-001 Wireless
Aircraft Intercom adapter.
RF output power is 21 dBm (125 mW peak)
Channel frequencies 23 = 1.921536 GHz
24 = 1.923264 GHz
25 = 1.924992 GHz
26 = 1.926720 GHz
27 = 1.928448 GHz
Only paired units will operate together (see section 1.3)
System operating information is in section 4.
WARNING: JAC recommends that no battery-operated device should be relied upon as the sole
method of communication in cases where there is potential risk to life or limb.
1.1 Unpacking
Unpack the wiJAC2™ box carefully, and ensure that it contains the following:
•four ea. Wireless Aircraft Headset Adapter, JAC P/N JB66-001
•one ea. Wireless Aircraft Intercom Adapter, JAC P/N JB67-001
•one ea. Headset Adapter Cable, JAC P/N CAB-HSET-0001
•four ea. Audio Panel Intercom Adapter Cable (10pin Hirose plug to U174 plug), JAC P/N CAB-WJ2-0004
•one ea. wiJAC2-T41 User Quick Start Guide, JAC P/N DOC-GUID-WI2T41
1.2 Verify Operating Region
The wiJAC2-T41 Wireless Intercom System operates using radio frequencies that are authorized by government
regulatory agencies. Ensure the region in which you are operating the units matches the region marked on a label on
the back of each unit.
Number of Headsets
in the System (2 – 4)
Operating Region:
1 = N America
2 = Europe
System Type:
T = Transceiver

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1.3 Verify Pairing Registration Number
The wiJAC2-T41 Wireless Intercom Dropcord System consists of one JB66-001 Headset Adapter and up to four
JB67-001 Intercom Adapters. Only paired units will operate together.
Refer to the Pairing Instructions in section 3.4.1.
2 The wiJAC2-T41 Components
The main components of the wiJAC2-T41 are four JB66-001 Headset Adapters and the JB67-001 Intercom Adapter.
The headset is not included.
Headset Adapter Cable
(CAB-HSET-0001)
Audio Panel Adapter Cable
(see section 3.3.2.1)
JB66-001
Headset
Adapters
JB67-001
Intercom
Adapter

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2.1 JB66-001 Headset Adapter (JB66)
Note: The unit is shown in grey for clarity.
2.1.1 JB66 Controls
2.1.1.1 (ON/OFF) Button
The ON/OFF control is a push button switch marked with the symbol and is located at the centre top of the unit
front. To turn the unit on, press the ON/OFF button once. The PWR ON annunciator will illuminate green, and the
LOW BATT annunciator will illuminate for two seconds as the JB66 starts searching for a paired JB67.
To turn the unit off, press and hold the ON/OFF button for approximately 3 seconds. (The PWR ON annunciator will
turn off and the LOW BATT annunciator will illuminate red and then turn off as the JB66 turns off, or when the
ON/OFF button is released.)
2.1.1.2 VOX (Voice Operated Switch)
The Voice Operated Switch control is a rotary knob marked VOX located on the top right of the JB66 Headset
Adapter. To reduce the level of the sound needed to route the microphone audio to the Intercom Adapter, turn the
VOX knob counterclockwise (ccw). To increase the level of the sound needed to route the microphone audio to the
Intercom Adapter, turn the VOX knob clockwise (cw). When the control is at the detent in the fully ccw position, the
unit will be in PTT ICS mode. Adjust this setting for proper VOX operation as ambient noise levels change.
ON/OFF Control
LOW BATT
Annunciator
Battery Lid
Release
Push To Talk
Buttons
PWR ON
Annunciator
Headset Jack
VOL
(Phones Volume
Control)
VOX (Microphone
Voice Operated
Switch Control)
Belt Clip
Product
Label
JB66 Front View JB66 Back View
JB66 Top View
VOX
Control
VOL
Control

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2.1.1.3 VOL (Phones Volume Control)
WARNING: Loud noise can cause hearing damage. Before using the headset, set the volume to
minimum, and then slowly increase it to a comfortable listening level.
The volume control is a rotary knob marked VOL (volume) located on the top left of the JB66 Headset Adapter. To
reduce the volume of the audio heard in the headset rotate the VOL knob counterclockwise. To increase the volume
of the audio heard in the headset rotate the VOL knob clockwise.
2.1.1.4 TX PTT (Push To Talk) Button
The Transmit Push To Talk button is a square push button switch marked TX PTT on the lower front of the JB66
Headset Adapter. When the TX PTT button is pressed and held, microphone audio is routed to the Intercom Adapter
and the TX Key output is also activated.
This is the user’s Transmit ‘Push To Talk’ (TX PTT) button. While this button is pressed, the wiJAC2™ system will
allow the user to transmit on the transceiver selected on the audio controller. If the TX PTT button is used, the VOX
threshold will be overridden (see section 2.1.1.2 above).
While the TX PTT button is pressed, all other linked JB66 Headset Adapters are prevented from transmitting.
2.1.1.5 ICS PTT (Push To Talk) Button
The intercom Push To Talk button is a hexagonal push button switch marked ICS PTT located on the upper front of
the JB66 Headset Adapter. When the ICS PTT button is pressed and held, the VOX threshold is overridden,
microphone audio is routed to the paired Intercom Adapter, and the ICS Key output is also activated.
2.1.2 JB66 Connectors
2.1.2.1 Headset Jack
The headset jack is a 4-pole TJT-120 jack on the top of the JB66 headset adapter. An appropriate mating headset
connector can be inserted directly into the jack (see section 3.3.2.1 for adapter cables).
2.1.3 JB66 Annunciators
2.1.3.1 PWR ON (Power On)
The power on (PWR ON) annunciator is a green LED located on the front left of the unit.
•When a unit is turned on, the PWR ON annunciator will illuminate for 2 seconds, and the unit will start to search
for its paired unit.
•While the unit is searching for its paired unit the PWR ON annunciator will triple-flash every 1.5 seconds.
•When the unit is connecting to its paired unit, the annunciator will double-flash every 1.5 s until connection is
established,
•After connection, the annunciator will illuminate steady green until the unit is turned off.
2.1.3.2 LOW BATT (Low Battery Warning)
The low battery (LOW BATT) warning annunciator is a red LED located on the front right of the unit. When the unit is
turned on, the LOW BATT annunciator will illuminate for 2 seconds.
When the JB66 battery voltage is low the LOW BATT annunciator will flash once every 1.5 s and output a low battery
notification (a triple beep) in the headphones once every minute until the battery charge reaches critical voltage level.
(A similar but higher pitched tone will be heard if the paired JB67 Intercom Adapter battery charge is low.)
Note:JAC recommends that the batteries should be charged or replaced immediately if the LOW BATT
warning illuminates during use.
When the unit battery charge is less than or equal to the critical battery voltage, the unit will turn off.

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2.1.4 JB66 Internal Adjustments, Annunciators and Connectors
To reveal the internal adjustments, annunciators and connectors, remove the battery cover by unfastening the
thumbscrew on the rear of the unit and raising the top of the cover until it can be lifted clear of the retaining tabs.
CAUTION: To prevent potential damage or loss of function, the internal adjustments, controls and CONFIG
port should only be used at initial set up. Contact your installing agency for any required changes.
2.1.4 1 Adjustments
The MIC INPUT signal (MIC LVL) should only be adjusted by qualified technical personnel.
2.1.4 2 Annunciators
Battery Charge
The JB66 Battery Charge annunciators are two LEDs at the top right of the battery compartment.
The Charging annunciator (CH) is a red LED that will illuminate when the batteries are being charged at the maximum
charge current, and the Full Charge (F) annunciator is a green LED that will illuminate when the batteries are fully
charged.
2.1.4 3 Controls
These buttons are recessed to prevent accidental activation. The Boot (BT) and Reset (RST) buttons should only be
activated by qualified technical personnel.
2.1.4 4 Connectors
POWER (Charging Port)
The Charging Port (marked POWER) is a 2.1 mm coaxial jack on the bottom left side of the battery compartment. To
charge NiMH batteries, connect a USB (Universal Serial Bus) to Type M 2.1mm Plug from the Charging Port to a USB
power source.
CONFIG (Mode Select)
The Configuration Port (marked CONFIG) on the bottom right side of the battery compartment is for factory use only.
Battery
Compartment
Adjustments and Annunciators – See sections 2.1.4.1 and 2.1.4.2
Controls and Connectors – See sections 2.1.4.3 and 2.1.4.4
Battery Charge Annunciators
Charging Port

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2.2 JB67-001 Intercom Adapter (JB67)
Note: The unit is shown in grey for clarity.
2.2.1 JB67 Controls
2.2.1.1 (ON/OFF) Button
The ON/OFF control is a push button switch marked with the symbol and located at the front centre top of both
units. To turn the unit on, press the ON/OFF button once. The PWR ON annunciator will illuminate green, and the
LOW BATT annunciator will illuminate for two seconds as the units start to search for a paired JB66.
To turn the unit off, press and hold the ON/OFF button for approximately 3 seconds. (The PWR ON annunciator will
turn off and the LOW BATT annunciator will illuminate red and then turn off as the unit turns off, or when the ON/OFF
button is released.)
2.2.2 JB67 Connectors
2.2.2.1 Intercom Connector
The headset jack is a 10 pin Hirose jack on the top of the JB67 intercom adapter, for use with a U-174/U or U93A/U
type intercom plug (see section 3.3.2.1 for adapter cables).
2.2.3 JB67 Annunciators
2.2.3.1 PWR ON (Power On)
The power on (PWR ON) annunciator is a green LED located on the front left of the unit.
•When a unit is turned on, the PWR ON annunciator will illuminate for 2 seconds, and the unit will start to search
for its paired unit.
•While the unit is searching for its paired unit the PWR ON annunciator will triple-flash every 1.5 seconds.
•When the unit is connecting to its paired unit, the annunciator will double-flash every 1.5 s until connection is
established,
•After connection, the annunciator will illuminate steady green until the unit is turned off.
2.2.3.2 LOW BATT (Low Battery Warning)
The low battery (LOW BATT) warning annunciator is a red LED located on the front right of the unit. When the unit is
turned on, the LOW BATT annunciator will illuminate for 2 seconds.
Belt Clip
PWR ON
Annunciator
LOW BATT
Annunciator
10 Pin Hirose connector
Battery Lid Release
ON/OFF Control

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When the JB67 battery voltage is low the LOW BATT annunciator will flash once every 1.5 s and output a low battery
notification (a triple beep) in the headphones once every minute until the battery charge reaches critical voltage
level.(A similar but lower pitched tone will be heard if the paired JB66 Headset Adapter battery charge is low.)
Note:JAC recommends that the batteries should be charged or replaced immediately when the LOW BATT
warning illuminates during use.
When the unit battery charge is less than or equal to the critical battery voltage, the unit will turn off.
2.2.4 JB67 Internal Adjustments, Annunciators and Connectors
To reveal the internal adjustments, annunciators and connectors in the battery compartment, remove the battery
cover by unfastening the thumbscrew on the rear of the unit and raising the top of the cover until it can be lifted clear
of the retaining tabs.
CAUTION: To prevent potential damage or loss of function, the internal adjustments, controls and CONFIG
port (information italicized) should only be used by qualified technical personnel. Contact your installing
agency for any required changes.
2.2.4.1 Adjustments
The MIC INPUT signal (MIC LVL) and Phones Level signal (P) should only be adjusted by qualified technical
personnel.
2.2.4.2 Annunciators
Battery Charge
The JB67 Battery Charge annunciators are two LEDs at the top right of the battery compartment.
The Charging annunciator (C) is a red LED that will illuminate when the batteries are being charged at the maximum
charge current, and the Full Charge (F) annunciator is a green LED that will illuminate when the batteries are fully
charged.
Battery
Compartment
Adjustments and Annunciators – See section 2.2.4.1 and 2.2.4..2
Controls and Connectors – See section 2.2.4.3 and 2.2.4.4

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2.2.4.3 Controls
These buttons are recessed to prevent accidental activation. The Boot (BT) and Reset (RST) buttons should only be
adjusted by qualified technical personnel. The Pair (PR) button is used during the pairing process (section 3.4.1).
2.2.4.4Connectors
POWER (Charging Port)
The Charging Port (marked POWER) is a 2.1 mm coaxial jack on the bottom left side of the battery compartment. To
charge NiMH batteries, connect a USB to Type M 2.1 mm Plug from the Charging Port to a USB power source.
CONFIG (Mode Select)
The Configuration Port (marked CONFIG) on the bottom right side of the battery compartment is for factory use only.
2.3 Other Features (Both units)
2.3.1 Battery Lid Release
The battery compartment lid release is a thumbscrew on the rear of the unit.
2.3.2 Belt Clip
The belt clip is on the rear of both the JB66 Headset Adapter and the JB67 Intercom Adapter. Ensure that the units
are attached securely.

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2.4 Batteries (for both JB66 and JB67)
WARNING: Charging battery types other than NiMH or NiCad may cause the batteries to leak or
explode and cause damage or injury. If non-NiMH or non-NiCad batteries are installed, do not connect
the Charging Port to a USB power source.
The JB66 and JB67 each require three AA batteries. JAC recommends Duracell 800 mAh (or higher) NiMH or
Duracell alkaline batteries for use in the wiJAC2™ system to obtain the typical battery life.
Removal of the batteries WILL NOT change any internal configuration of the unit.
2.4.1 Inserting or Replacing the Batteries
Battery Lid Release
To replace the batteries, remove the battery cover by unfastening the battery
lid thumbscrew to release the upper end of the cover, and then gently lift the
lid up and away from the body to release the two retaining tabs from the
slots.
Remove the batteries and insert new or fully charged batteries, matching the
polarity marked on the battery holder.
Retaining tabs
2.4.2 Charging Batteries in the Unit
To charge rechargeable batteries in the unit, connect the Charging Port to a USB power source using the USB to 2.1
mm male cable (CAB-USB-0013, see section 2.4.4). If turned on during charging, the unit draws its power from the
charging source, not the batteries, but battery charging will take longer. When charging is complete, the 'Full '
annunciator (F) will illuminate green.
It should be possible to charge the unit via most USB power sources but this cannot be guaranteed for any products
not made by or purchased from JAC.
Note:The batteries will charge whether the JB66/JB67 is switched on or switched off. Battery charging will
take longer if the unit is switched on.
2.4.3 Charging Operation – via Battery Charger
The batteries may be removed from the unit for charging in a separate battery charger. Removal of the batteries WILL
NOT change any internal configuration of the unit.
Note: The JB66/JB67 will only charge the batteries when the internal temperature is within 0 to 40 °C

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2.4.4 Rechargeable Battery Kit
A rechargeable battery kit is available for this system (JAC P/N INST-JB6X). It contains:
•two ea. USB A Male to Type M 2.1mm Plug USB Connector, 3ft Length, JAC P/N CAB-USB-0013
•six ea. NiMH 2450 mAH Batteries, JAC P/N MSC-BATT-AA2
2.4.5 Battery Cautions and Warnings
CAUTION: Follow these guidelines to prolong battery life and minimize the risk of unit malfunction.
Do not leave battery uncharged for long periods of time.
Do not leave battery charging for extended periods (more than 48 hours)
To ensure that the unit functions correctly, insert the new batteries with the positive and negative poles
aligned as indicated in the battery compartment.
When replacing the batteries, use only new or fully charged batteries.
Do not mix old and new batteries as this can cause battery leakage and/or damage to the unit.
Do not mix battery types.
WARNING: Follow these guidelines to prolong battery life, and minimize the risk of fire, chemical
burns, electrolyte leaks and/or injury.
FOLLOW the manufacturer's instructions for care and disposal of batteries.
DO NOT use sharp objects to remove the batteries.
DO NOT disassemble, puncture, burn or in any other way damage the batteries.
DO NOT let children handle the batteries.
USE ONLY approved battery chargers.
USE ONLY approved replacement batteries.

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3 Connecting the wiJAC2™ System
Note:The wiJAC2-T41 Wireless Intercom Dropcord System consists of one JB66-001 Headset Adapter and
up to four JB67-001 Intercom Adapters. Only paired units will operate together (see section 3.4.)
The JB67 Intercom Adapter is connected via an adapter cable (see section 3.3.2.1) into a jack in the aircraft where
the headset dropcord is normally connected, and is then clipped to a suitable point in the aircraft.
A headset is inserted (via adapter cable CAB-HSET-0001 if required) into the jack on the JB66 Headset Adapter,
which is clipped to the user's belt or clothing. Headset and audio panel are not included.
WARNING:JAC recommends that no battery-operated device should be relied upon as the sole
method of communication in cases where there is potential risk to life or limb.
Standard aviation
headset to JB66-001
JB67-001
to aircraft
intercom jack
JB66-001 Headset Adapters
(Connected to user's headsets)
JB67-001 Intercom Adapter
(Plugged in to aircraft intercom jack)
ALWAYS charge rechargeable batteries
before every use.

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3.1 wiJAC2-T41 System with a Transceiver
When connected to a transceiver, the linked Headset Adapters are in an intercom loop which allows full duplex
communication between the operators of each JB66. Each operator can listen to the transceiver receive audio, and by
pressing the JB66 TX PTT button can transmit on the transceiver. When one JA66 is transmitting, all other JB66 mics
will be muted, but the operators can hear the radio sidetone.
Figure 3-1,
Non-Aircraft Radio System

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3.2 wiJAC2-T41 System connected to Aircraft Audio System
When connected to an aircraft audio system, the linked Headset Adapters are in an intercom loop which allows full
duplex communication between the operators of each JB66. Each operator hears the aircraft ICS audio, and by
pressing the TX PTT button on a JB66, can route the mic audio to the aircraft audio system ICS. When one JB66 TX
PTT button is pressed, all other JB66 mics will be muted, but the operators can listen to the conversation.
Figure 3-2,
Aircraft Audio System

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3.3 wiJAC2™ Set-up and Connection
3.3.1 Insert Batteries
Ensure the batteries for both units are either new or fully charged, are installed in the battery compartment with the
correct polarity, and that the battery lid is secured (see section 2.4).
3.3.2 Attach Connectors to Aircraft and Headset
Connect the JB67 Intercom Adapter jack (10-pin HR10A) to the audio panel jack connector (TJ-120 or equivalent) via
an adapter cable (see section 3.3.2.1).
The JB66 Headset Adapter jack is a 6-pin female Lemo connector. A headset can be inserted directly into the JB66
(ANR direct), or via a headset adapter (CAB-HSET-0001 helicopter headset to 6 pin adapter, included).
3.3.2.1 Adapter Cables
The following adapter cables are available from Jupiter Avionics or through JAC dealers/distributors:
Description JAC Part #
JB67 - 10 pin Hirose plug to 6 pin MS plug – with TX &ICS key – MIC LO Ground CAB-WJ2-0002
JB67 - 10 pin Hirose plug to 6 pin MS plug – with TX &ICS key – PHNS LO Ground CAB-WJ2-0003
JB67 - 10 pin Hirose plug to U174 Plug – 1.5ft Cord CAB-WJ2-0004
JB67 - 10 pin Hirose plug to 10 pin MS plug – with TX &ICS key – MIC LO Ground CAB-WJ2-0006
JB66 - GA to 6 pin Lemo CAB-HSET-0002
3.3.3 Turn On Adapters and Verify Connection
On the JB66 Headset Adapters, turn the VOL knob fully counterclockwise to minimum. Turn on the JB66 Headset
Adapters and the JB67 Intercom Adapter. On both units the PWR ON and LOW BATT annunciators will illuminate for
two seconds.
•When a unit is turned on, the PWR ON annunciator will illuminate for 2 seconds, and the unit will start to search
for units it is paired with.
•While the unit is searching for its paired units, the PWR ON annunciators will triple-flash every 1.5 seconds.
•When the unit is connecting to its paired unit, the PWR ON annunciators will double-flash every 1.5 s until
connection is established.
•After connection, the PWR ON annunciator will illuminate steady green until the unit is turned off.
3.3.4 Verify Audio Operation
Set the aircraft audio system's VOX mode to live or key the aircraft audio system's ICS PTT for the headset
connection used by the JB67 Intercom Adapter.
Adjust the JB66 Headset Adapter's VOX control to fully counter-clockwise, then slightly clockwise to move it out of
detent position. Adjust the VOL control to achieve a comfortable listening level. Confirm that the microphone audio is
live - all microphone audio is heard in the phones. Confirm that the audio level increases as the VOL control is rotated
clockwise and decreases as the VOL control is rotated counterclockwise.
Adjust the Headset Adapter's VOX control to fully clockwise and confirm that the microphone audio is off.
Press the Headset Adapter's ICS PTT button and confirm that microphone audio is heard in the phones.
Adjust the Headset Adapter's VOX control for a comfortable speaking level and return the aircraft audio system's
controls to its previous settings.

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3.4 wiJAC2™ Adjustments and Pairing
CAUTION: To prevent potential damage or loss of function, the internal adjustments, controls and CONFIG
port should only be used by qualified technical personnel. Contact your installing agency for any required
changes.
3.4.1 Pairing Process
The wiJAC2-T41 Wireless Intercom System consists of one JB67 Intercom Adapter, and four factory-paired JB66
Headset Adapters.
If either the JB67 or any of the JB66 units has been
replaced, it will be necessary to re-pair all the units. This
may also be necessary if either of the units has
undergone maintenance.
To locate the pair switch, the battery cover must be
removed from the unit.
When the battery cover is removed, the pair switch (PR)
can be seen on the lower edge of the compartment.
The pairing process must be performed for each JB66 that is added to the system.
The JB66/JB67 pairing process is described in the following steps:
1. Turn off the JB67 and previously paired JB66.
2. Turn on the JB67.
The JB67 enters the standby mode (Power Annunciator blinks in sets of two or three flashes). If the Power
Annunciator stays on continuously, the JB66 is still powered on and connected to the JB67. Turn off the JB66.
3. On the JB67, press and hold the Pair Switch (4 seconds) until the Power and Low Battery Annunciators
start flashing rapidly (10 flashes /second). Release the Pair switch.
The JB67 enters the pairing mode (Power Annunciator is flashing at a medium rate (5 flashes /second) and can
now be paired with the JB66.
4. Turn on the JB66 to be paired with the JB67.
The JB66 enters the standby mode (Power Annunciator blinks in sets of two or three flashes).
5. On the JB66, press and hold the Pair Switch (4 seconds) until the Power and Low Battery Annunciators
starts flashing rapidly (10 flashes /second). Release the Pair switch.
The JB66 enters the pairing mode (Power Annunciator is now flashing at a medium rate (5 flashes /second) and
will complete the pairing process automatically with the JB67.
The JB66 and JB67 indicate they have completed the pairing process when the Power Annunciators are on
continuously.

wiJAC2-T41 Wireless Intercom System with Transceiver Connection - 4 User - N America
Operating Manual
Rev A Page 16
3.4.2 Purging Process
Purging the JB67 Transceiver Adapter removes the pairings of all JB66 Headset Adapters.
The purging process is described in the following steps:
1. Turn off the JB67 Transceiver Adapter and all other JB66 Headset Adapters previously paired with the
JB67.
2. Turn on the JB67.
The JB67 enters the standby mode (Power Annunciator blinks in sets of two or three flashes). If the Power
Annunciator stays on continuously, there is a JA66 still powered on and is connected to the JB67. Please turn
off the JB66.
3. On the JB67-001, press and hold the Pair Switch (>4 seconds).
4. When the JB67 Power and Low Battery annunciators begin blinking rapidly, press the JB67 Power Button.
5. Release the Pair Switch and Power Button.
The JB67 enters the purge mode (Power Annunciator blinks in sets of three flashes). Wait for the JB67 to finish
purging all paired JB66s from its memory (approximately 10 seconds).
6. Turn off the JB67.
7. Turn on the JB67. If the Power Annunciator blinks in sets of three flashes, the purging process was
successful. If the Power Annunciator blinks in sets of two flashes, repeat the purging process from step 1.
Note:To minimize the risk of system malfunction, do not attempt to pair a JB66 Headset Adapter with more
than one JB67 Transceiver Adapter.

wiJAC2-T41 Wireless Intercom System with Transceiver Connection - 4 User - N America
Operating Manual
Rev A Page 17
4 wiJAC2™System Operation
4.1 Overview
When both units are turned on and connected, phones audio from the aircraft audio system is transmitted from the
Intercom Adapter, received by the Headset Adapter and output on the headset's phones. Microphone audio from the
headset's microphone is transmitted from the Headset Adapter, received by the Intercom Adapter and output to the
aircraft's audio system.
4.1.1 Listening Operation
The Headset Adapter's Phones Volume (VOL) controls the level of audio heard in the headset's ear phones. As
ambient noise levels change, the volume can be adjusted.
4.1.2 VOX Speaking Operation
To use the JB66 Headset Adapter hands-free, adjust the VOX control so that the microphone audio is turned on when
speaking in to the headset's microphone at a comfortable level, or at a level to keep the ambient noise from turning on
the microphone audio.
4.1.3 ICS PTT Speaking Operation
To use the JB66 Headset Adapter in high-noise environments, adjust the VOX control fully counter-clockwise until the
knob clicks into detent position. To communicate, press and hold the JB66 Headset Adapter's ICS PTT button and
speak in to the headset's microphone.
4.1.4 Live Speaking Operation
To use the JB66 Headset Adapter so that the microphone audio is always turned on, adjust the VOX control fully
counter-clockwise.
4.1.5 Low Battery Warning
When the unit's battery charge is low, the LOW BATT annunciator will triple flash every 1.5 seconds. When the JB66
Headset Adapter battery charge is low, a triple-beep will be heard in the headset once every minute.
Note:JAC recommends that the batteries should be charged or replaced immediately when the LOW BATT
warning illuminates during use.
When the battery charge level is critical, the unit will turn off. When one unit is off the other unit will begin searching
for its paired unit and its PWR ON annunciator will flash.
4.1.6 Operation during Charging
The units will still operate while the Charging Port is connected to a USB power source, but the batteries will charge at
a slower rate. Additional noise may be heard on the audio system while the Charging Port is connected to a USB
power source.
4.1.7 Loss of Audio
If there is no audio heard in the headset, check the PWR ON annunciator on the JB66 Headset Adapter and the JB67
Intercom Adapter. If a unit is off, turn it on and verify connection and operation.
If the battery charge is low, replace or recharge the batteries or connect the headset directly to the aircraft audio
system.
If audio is unintelligible, turn off and remove the JB66 Headset Adapter and the JB67 Intercom Adapter and connect
the headset directly to the audio panel.