COMMUNICATIONS-APPLIED TECHNOLOGY 11250-14 Roger Bacon Drive Reston, VA 20190

Voice: 800-229-3925 Support: Techsupport@c-at.com

Rev A

11/2020

Setup and Operating Procedures

ICRI-E

Incident Commanders’ Radio Interface™

A Rapidly Deployable, Radio Interoperability Solution

Waterproof, Gross Decon-able

MANUFACTURED BY

COMMUNICATIONS-APPLIED TECHNOLOGY CO., INC.

RESTON, VA.

CAGE CODE: 0EEY2

http:// www.c-at.com

If you have any questions, please contact:

C-AT TECHNICAL SUPPORT at 800-229-3925 (voice), 703-471-4428 (fax), or

E-mail to techsupport@c-at.com

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TABLE OF CONTENTS:

THEORY OF OPERATION ..................................................................................................................... 3

INTEROPERABILITY DOS AND DON’TS ........................................................................................... 5

PRE-OPERATIONAL ACTIVITIES ....................................................................................................... 6

“RAPID DEPLOYMENT” SETUP AND OPERATION OF THE ICRI .............................................. 7

SETTING UP THE ICRI FOR USE WITH PORTABLE RADIOS. ............................................................. 7

COMPONENTS .......................................................................................................................................... 8 INTERNAL PANEL.................................................................................................................... 8

EXTERNAL PELICAN CASE: ................................................................................................ 10

ICRI POWER............................................................................................................................................ 12

TO POWER THE ICRI 8 “AA” BATTERIES .................................................................................... 12

ALTERNATIVE POWER SOURCES - USING BATTERY CLIPS TO POWER THE ICRI......................... 13

USE AN AC SOURCE TO POWER THE ICRI ................................................................................... 14

LAND MOBILE INTERFACE ............................................................................................................... 15 CONNECT INTERFACE CABLES .................................................................................................... 15

SETTING THE RADIO TO PASS AUDIO TO AND FROM THE ICRI .......................................... 16

TROUBLESHOOTING RADIO CONNECTION WITH ICRI .......................................................... 16

ICRI LOCAL HANDSET ........................................................................................................................ 17 SETTING UP THE HANDSET .......................................................................................................... 17

DISCONNECTING THE HANDSET .................................................................................................. 17

OPTIONAL SATPHONE, LAND-LINE TELEPHONE, CELLULAR PHONE INTERFACE ...... 18

ICRI LAND-LINE TELEPHONE LINK USING RJ-22 CONNECTION .................................................. 18

CELLULAR TELEPHONE LINK ....................................................................................................... 19

SYLLABIC RATE SQUELCH SYSTEM .............................................................................................. 20

APPENDIX A: RADIO EXTENSION CABLE REEL ......................................................................... 21 SET-UP OF THE CABLE-REEL........................................................................................................ 22

APPENDIX B: CONNECTOR PIN-OUT DATA .................................................................................. 25

APPENDIX C: ICRI APPLICATIONS .................................................................................................. 26

APPENDIX D: ICRI CHASSIS ............................................................................................................... 28

APPENDIX E: ACCESSORIES .............................................................................................................. 29

APPENDIX F: ICRI BOARD ADJUSTMENTS ................................................................................... 31

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TABLE OF FIGURES:

FIGURE 1: INTERNAL PANEL ................................................................................................... 8

FIGURE 2: EXTERNAL ICRI ..................................................................................................... 10

FIGURE 3: INTERNAL BATTERY HOUSING......................................................................... 12

FIGURE 4: DC POWER SUPPLY SUB-ASSEMBLIES ............................................................ 13

FIGURE 5: AC POWER ADAPTOR, CHECK +/- ..................................................................... 14

FIGURE 6: AC POWER SUPPLY & ADAPTOR....................................................................... 14

FIGURE 7: ICRI RADIO TALK GROUP SELECTOR .............................................................. 15

FIGURE 8: ICRI CONNECTORS AND HANDSET TALK GROUP SELECTOR .................. 15

FIGURE 9: RADIO WITH ICRI CABLE ATTACHED ............................................................. 15

FIGURE 10: HANDSET INTERFACE JACK ............................................................................ 17

FIGURE 11: RJ22 ADAPTER ..................................................................................................... 18

FIGURE 12: ICRI-E WITH RJ22 ADAPTER INSTALLED ...................................................... 18

FIGURE 13: RJ22 CABLE AT TELEPHONE ............................................................................ 18

FIGURE 14: ICRI-E CONNECTED TO A LAND-LINE TELEPHONE ................................... 19

FIGURE 15: TELEPHONE INTERFACE ADAPTER JACK AND CELLPHONE .................. 19

FIGURE 16: 500’ EXTENSION CABLE .................................................................................... 21

FIGURE 17: “GANGED” EXTENSION CABLES ..................................................................... 21

FIGURE 18: REVERSAL CABLES ............................................................................................ 22

FIGURE 19: ICRI PIN OUT DATA ............................................................................................ 25

FIGURE 20: REPEATING BODY WIRE SIGNAL.................................................................... 26

FIGURE 21: BELOW GRADE OR IN-BUILDING LINK TO TRUNKED REPEATER ......... 26

FIGURE 22: ICRI-E WITH ATTACHMENTS (NOT TO SCALE) ........................................... 27

FIGURE 23: TOP COVER OF THE ICRI ................................................................................... 28

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Theory of Operation

The ICRI is capable of bridging, or linking, the voice communications between several radios, and

other voice sources.

The sources may include:

• Two-way radios (portable, mobile, narrow band/wideband).

• Telephone (land-line, cellular, satellite)

• Voice Over Internet Protocol (VoIP)

• Handset/headset

The ICRI permits these sources to be linked in one or two nets/talk groups according to the

operational requirements of the Incident Commander. The participation, of each agency’s radio or

other voice communications devices in a net/talk group, is controlled by a toggle switch for each

voice device connected to the ICRI.

The voice received from a remote voice source is utilized by the ICRI to “key” all other connected

devices. As audio is received from the radio or other device, the other devices in that radio’s

assigned net/talk group are “keyed” and the audio is released to these devices for transmission to

users monitoring these devices.

• An ICRI contains up to six (6) circuits that key the radios connected to the ICRI; these circuits

are commonly referred to as “VOX” or “voice-activated switches.” The ICRI uses these circuits

to perform other controlling functions as well. Only the VOX directly connected to the

incoming audio is used to key each of the other radios simultaneously (all other are temporarily

disabled, preventing a second “voice” from causing a disruption in initial voice being

distributed).

• There is no discrimination or evaluation of the incoming audio so that delays are not inserted

into the audio transfer or “keying” processes. Radios, telephones and/or recording devices

connected to the ICRI are provided with the incoming essentially in real-time (an initial delay at

keying to preserve the first syllables of incoming audio as the transmitters [including wide area,

repeater-based “trunked” radio systems] are keyed up).

All radio connections/ports on the ICRI are “universal”; any radio can be connected to any port

without special adjustment. Radio interconnect cables provided with the ICRI are engineered for the

radio brands/models, and along with circuitry within the ICRI, adjust for the difference that may

exist between radios.

Connection of mobile radios to the ICRI will not prevent the regular operation the mobile radio’s

hand microphone and speaker. This capability is derived from the design of the C-AT-supplied,

radio interface cables.

Initial connection of voice devices is aided by LED indicators for each connection/port. The LED is

an indicator of audio input to the ICRI and is used to initially set the radio output level to the ICRI.

This adjustment is made without meters or other instruments; an Automatic Level circuit in the

ICRI, that requires no user involvement, aids in this.

Each net/talk group can be independently set for a trunking system or repeater that has an access

delay. Generally, the setting of the delay by C-AT will never need to be adjusted.

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The ICRI’s efficient circuit design permits a wide range of input voltages, 6-24V DC, will power the

ICRI without degradation of its capabilities/function.

In order to withstand the demands of harsh environments, the ICRI has been built into a waterproof

and dustproof Pelican case with waterproof connectors.

OPTION: Extension cable reels for radio interface may be supplied with this ICRI. The extension

cable permits a radio to be placed at this distance from the ICRI. This may be useful when

connecting to a satellite antenna/radio or when a team enters a structure/tunnel. Multiple extension

cable reels can be connected for even greater distance (up to 5,000 feet).

OPTION: Each Talk Group can be monitored through self-amplified, external speakers, when jacks

are added to the ICRI. These jacks can be installed on the left side of the ICRI. The jacks can also

be used for recording the communications on each Talk Group. The audio level is optimized for the

input to a digital recorder.

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INTEROPERABILITY DOS AND DON’TS

These “universal” rules will help to ensure that the part of communications interoperability will

work properly.

1. Maintain COMSEC when forming interoperability bridges. Only connect Red to Red and

Black to Black.

2. Verify that only one interoperability bridge in the area is using the radio frequencies that

you will be using.

3. Audio and RF cables should be separated from AC power cables by 12” (use an external

DC source or batteries when you cannot maintain the separation).

4. When plugging in two or more radios within the same radio band (i.e. VHF) into a radio

bridge, like the ICRI, provide as much vertical separation as possible to reduce the

chance for interference due to the transmitted signal from one radio reducing the receive

sensitivity of the other “in band” radios. Consider using external mobile antennas

connected to the radios if necessary. Use only bridge interconnect cables that are well

shielded.

5. Some bridge cables contain in-line, audio amplifiers for radios designed with low audio

levels. It is best to route those cables away from radio antennas and connectors---high RF

fields can distort the audio amplifier’s output to the bridge.

6. Don’t use “SCAN” mode for any radios connected to a radio bridge. This is particularly

important when you are using the bridge as a tactical repeater, where two or more radios

have similar channel programming. If both radios are capable of hearing the same signal,

they will key each other up, known as "Ping-Pong,” interfering with the function of the

bridge.

7. Connecting two or more radios operating in the same band (VHF or UHF for example) to

a gateway will result in the “desensing” of the radio receiving a signal from a hand-held,

or mobile. Desensing may result in distorted audio from the receiving radio to the

gateway, and/or reduction of the radio’s ability to received signals from distant radios

(reduction in receiver sensitivity due to other radios transmitting very close to the

receiving radio). To lessen the severity of desensing, provide as much vertical separation

between the antennas of two or more radios operating in the same band.

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Pre-Operational Activities

Some pre-planning is necessary to ready the ICRI for use. The following should be accounted for

before placing the ICRI on-line:

1. Determine what the power source will be for the ICRI and verify that the cable or battery

pack is available.

2. Predetermine what brand and model of radios will be connected to the ICRI and that an

“interconnect” cable for each radio is available.

3. Agencies must be advised that they will need to supply a “spare” radio, for the radio

interoperability, that the radio supplied must be known to operate properly and have at least

one fully charged battery.

The ICRI can be powered by internal batteries (8 “AA” batteries) or another DC source up to 20

VDC. The LEDs on the ICRI provide information battery status, in particular, a reliable indication

of a low voltage condition.

Note: If eight “AA batteries are used, the ICRI will continue operate to nominally for at least 2

hours after the “OK” LED is extinguished and the “LOW” LED has lit and then extinguished

(batteries will provide a reduced duty cycle due to low quality, poor storage conditions before use,

and/or low temperature during use).

Among the other power sources that can be used to power the ICRI are:

• 12 or 24 volt vehicle battery

• Vehicle cigarette lighter

• 115VAC (with an external adapter)

• Commercial dry-cell battery (12V or greater)

• C-AT 12 volt battery pack (uses 8 “AA” batteries)

• BA590 or similar “military”

The internal regulated power supply of the ICRI is both reverse polarity protected, but it is important

to check polarity of DC supplies before connecting them to the ICRI.

Note: The ICRI power input connector information appears on the bottom of the ICRI and in the

APPENDIX D: ICRI Chassis

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“RAPID DEPLOYMENT” SETUP AND OPERATION OF THE ICRI

Setting up the ICRI for use with portable radios.

1. Place all Talk Group switches in the TG or 1 2 position.

2. After connecting a power source to the ICRI, turn on the ICRI so that power up and input

voltage can be verified. The green LED, labeled “OK” should be lit.

If you need to use a DC source voltage between 6.5 and 7.4 volts, then neither the OK nor

the LOW (voltage) LEDs will be lit, but the ICRI will be working.

3. Connect the handset to the ICRI handset jack. This is the jack, on the outside of the unit, that

is furthest to the left.

4. Connect the radio interface cables to the ICRI jacks labeled “1” through “5”.

All five ICRI radio interface connections (1-5) are electrically identical, so it is not

important which jacks are used for conventional, trunked, repeated, encrypted or mobile

radios during ICRI operation.

5. Connect the radio interface cables to the radios.

6. Verify that the radios are on the channels assigned to the interoperability/bridging function.

7. Select the Talk Group assignment for each radio, and place the switch associated with jack

into the designated Talk Group position.

The TG or 1 2 position of the switch places any item connected with the associated port into “NO

CONNECTION” conduction without physically disconnecting the device from the ICRI.

8. Turn on the radio connected to the jack labeled “1”and initially place the radio volume

controls at a mid-position between fully counter-clockwise and fully clockwise.

9. Place the handset Talk Group selector switch in the same Talk Group as the radio connect to

jack “1” so that you can transmit on that radio. You will also be able to monitor that radio.

10. As a radio connected to the ICRI receives voice for a remote radio user for the first time,

adjust the radio’s volume control so that the associated LED, above the jack, flickers as

words are spoken. The LED should not remain on continuously as the voice is received.

11. Repeat steps 8 - 10 for each radio connected to the ICRI

12. Connect the telephone, if it will be used.

13. Select the talk-group the telephone and/or handset will be associated with. Place the

telephone in the “OFF HOOK” position.

Refer to Optional SATPHONE, Land-line Telephone, Cellular Phone Interface for

detailed telephone interface application.

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COMPONENTS

INTERNAL PANEL

FIGURE 1: INTERNAL PANEL

ACTIVE VOX (VOICE ACTIVATED CIRCUIT) LED INDICATOR: A

Each LED is associated with a voice communications port (radio, telephone). When the port receives

audio from the radio or other connected device, the LED will light as the audio is received at the

ICRI circuitry. The LED should light as each word is spoken. To adjust the level of the incoming

audio, adjust the volume control of the device connected to the ICRI.

TALK GROUP SWITCH: B

The talk group switches determine which communications devices will be connected/interoperate

each other. Only the radios, telephone, or handset connected to a specific talk group will hear or be

able to transmit audio to the other individuals connected to that talk group. The switch corresponds

to the interface jacks on the exterior of the unit. Radios/interfaces DO NOT need to be turned off or

disconnected to switch talk groups.

UP: Talk Group 1

CENTER: Not connected to either talk group

DOWN: Talk Group 2

A

B C

D

E

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ON-OFF SWITCH: C

This switch is used to turn the ICRI ON and OFF; there is no delay between “POWER ON” and

radio link.

OK/ LOW INPUT VOLTAGE LEDs: D

These two LEDs indicate the following:

The Green LED indicates the input voltage 8.6 or greater. If battery power option is used,

the ICRI will have approximately 24 hours of run time at full duty cycle.

The red LED indicates the input voltage is 7.5 to 8.5 volts. Once this light is illuminated the

ICRI will have approximately 2 hours of run time.

Note: If neither LED is lit, the ICRI will operate on voltage as low as 6V. Maximum input voltage

is 20VDC

BATTERY COMPARTMENT: E This unit contains a “AA” alkaline battery compartment which holds 8 batteries. When the compartment

contain fresh (at least 1.59V per cell if checked with a voltmeter), the unit will operate for 24 hours,

during full operation. See the section titled, “To power the ICRI 8 “AA” batteries” for installation

and replacement instructions.

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EXTERNAL PELICAN CASE:

FIGURE 2: EXTERNAL ICRI

TALK GROUP SWITCH (HANDSET/HEADSET): F

The talk group switch determines which communications devices will be connected/interoperate

each other. Only the radios, telephone, or handset connected to a specific talk group will hear or be

able to transmit audio to the other individuals connected to that talk group. The switch corresponds

to the handset jack below it.

LEFT: Talk Group 1

CENTER: Not connected to either talk group

RIGHT: Talk Group 2

VOLUME ADJUSTMENT (HANDSET/HEADSET) G

Volume knob only adjusts the volume output level at a handset or headset connected to the ICRI at

“Handset Interface” jack. To adjust the volume of the radios, use the volume adjustment on the

individual radios.

HANDSET/HEADSET JACK H

This 5 pin U-183/U connector supports the H250/H350 handset

Pinout:

A- Ground

B- Audio to handset

C- PTT

D- Audio from handset

E- No connection

F G

H

I J K

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RADIO JACK (1 thru 5) I

The five radio interface jacks on this unit are a 5-pin, U-183/U locking jacks. All radio jacks are

compatible with all military and commercial radios.

Pinout:

A- Ground

B- Audio from radio

C- P-T-T Enable

D- Audio to radio

E- No Connection

TELEPHONE JACK: J

This 8-pin locking-type jack supports the connection of the ICRI to a satellite telephone or land-

line telephone, when used with an adapter (8-pin plug to RJ-22 modular jack, P/N 179.0805).

Additionally, a cellular telephone can be connected through the 2.5mm (interface cable P/N

179.0693) or 3.5mm (interface cable P/N 179.0717) jack on a cell phone. See the section titled,

“Optional SATPHONE, Land-line Telephone, Cellular Phone Interface” for details.

Pinout:

A- No Connection

B- No Connection

C- No Connection

D- No Connection

E- Audio to phone

F- Audio from phone

G- Audio to phone

H- Audio from phone

POWER (DC INPUT) JACK: K

Power jack is used to connect ICRI battery pack, alternative DC power source (vehicle) or AC

power. The Power jack is a 2-pin locking jack. Align the keyway in the power jack with the key

in the plug. To remove, unscrew the connector and then gently pull on the connector at the base.

Pinout:

A – +6 to +24 VDC

B – Ground

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ICRI Power

The following instructions provide three different methods of powering the ICRI.

• 8 “AA” batteries

• Alternate DC power source (vehicle)

• AC power

To power the ICRI 8 “AA” batteries

FIGURE 3: INTERNAL BATTERY HOUSING

Open the Pelican case.

Loosen the two thumbscrews (E) holding the battery cover plate on the upper right hand corner of

the ICRI and remove the plate.

Remove the old batteries and discard properly.

Replace the 8 "AA” alkaline batteries, observing the polarity markings within the tray.

Replace the battery cover and tighten down the thumbscrews.

Note: No tools are required to loosen or tighten these thumbscrews. Finger pressure is enough to

tighten or release the plate.

The battery housing is comprised of two parts; the cover and an internal tray.

NO TOOLS ARE NEEDED TO REMOVE THE cover AND REPLACE THE BATTERIES.

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Alternative Power Sources - Using Battery Clips to Power the ICRI

1. Connect the cable to the DC source.

2. Connect the other end of the cable to the ICRI’s jack, labeled POWER INPUT.

NOTE: Care should be taken to align the keyway on the plug with the key on the jack before

attempting to insert the plug.

3. Tighten locking ring on the plug. It is important that the connector be firmly seated against

the jack so that good electrical contact is made.

4. To remove the plug, loosen the locking ring, then hold the fluted part of the plug’s barrel and

pull straight out.

NOTE: DO NOT remove the power cable by pulling from the cable.

FIGURE 4: DC POWER SUPPLY SUB-ASSEMBLIES

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Use an AC source to power the ICRI

This power supply consists of two parts: the three-prong AC power cable and an AC to DC converter

with an interconnect cable.

NOTE: The AC supply must not be used where the cables or converter can become wet.

1. Connect the power cord to the converter and to the DC source (100-240V, 50-60Hz).

2. Connect the adapter’s plug to the jack on the ICRI, labeled POWER INPUT. Tighten

locking screw; it is important that the connector be firmly seated against the jack so that

good electrical contact is made.

NOTE: Align the plug’s “keyway” with the jack’s “key” before attempting to insert the plug.

3. To release, loosen the locking screw and gently remove the connector.

NOTE: DO NOT remove the power cable by pulling from the cable.

FIGURE 5: AC POWER ADAPTOR,

CHECK +/-

FIGURE 6: AC POWER SUPPLY & ADAPTOR

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Land Mobile Interface

NOTE: Radio interconnect cables are generally specific to a radio brand and model, although some

manufacturers use the same connector for several radio models. Interconnect cables provided by C-

AT have a seven digit part number label on the cable.

Connect Interface cables Install the radio-end of the ICRI interconnect cable onto the radio, as you would install any radio

accessory (i.e.: a shoulder speaker / microphone).

Tightening any locking screws is optional; but it is important that the connector be firmly seated

against the radio so that good electrical contact is made.

Attach the other end of the cable to any of the LAND MOBILE RADIO INTERFACE jacks,

labeled 1, 2, 3, 4 and 5.

NOTE: The plug on the cable and the jack are “keyed”. Be sure to align the key before inserting

the plug on to the connector or the connection may be damaged

FIGURE 7: ICRI RADIO TALK GROUP

SELECTOR

FIGURE 8: ICRI CONNECTORS AND

HANDSET TALK GROUP SELECTOR

FIGURE 9: RADIO WITH ICRI CABLE

ATTACHED

To connect interface cable to ICRI, align flat surface of connector to red dot on the selected ICRI port. Push

the cable onto the jack and turn clockwise until cable locks in place.

To remove the connector, push the interface cable side in towards the ICRI, and turn counterclockwise until

the cable releases. Then pull the connector straight out of the jack. Hold the barrel of the connector rather

than the cable.

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Setting the radio to pass audio to and from the ICRI

1. Set the radio to the desired channel.

2. Set the radio to the talk group designated by the Incident Commander.

3. Set the audio level on each connected radio to mid-position. The radio port’s associated LED,

located on the top deck of the ICRI, will light as the received audio passes from the radio to the

ICRI.

NOTE: When the ICRI is connected to the radio via its speaker/mic jack, the radio’s internal speaker and

mic are disabled. You will be unable to hear or speak through the radio. If you can hear or talk through

the radio, the cable may not be properly attached to your radio.

Troubleshooting radio connection with ICRI

NOTE: Before proceeding, refer to the INTEROPERABILITY DO’S AND DON’T’S for interoperability

guidelines…the solution may be there.

1. Connect the ICRI handset to the handset jack on the exterior of the ICRI.

NOTE: The plug on the handset appears to be similar to those provided for the radio interface cables, but

it will only work properly in the ICRI’s HANDSET jack.

2. If you have multiple radios connected to the ICRI, select one radio and turn it on. Turn off all other

radios or audio devices.

3. Verify that the volume control on the radio is set to mid position.

4. Depress the P-T-T bar on the side of the handset and hold it down while you speak into the handset

microphone. You should hear clean audio transmission through speakers on the radios in the same

channel as the radio connected to the ICRI.

5. Conversely, when you key another radio on the same frequency/channel as the radio connected to

the ICRI and speak into its microphone, you should hear a clean audio transmission through the

ICRI’s handset earpiece.

6. If you are unable to hear a clean audio transmission (a) verify the connections to the radio and ICRI

are secure, (b) the radio is indicating that it is receiving a signal from the remote radio.

Correct/adjust as needed.

7. Next verify that the LED on the ICRI flickers with each word spoken by the remote radio user. If it

does not, slowly turn the volume control on the radio connected to the ICRI clockwise, stopping

when the LED flickers as the remote radio user speaks.

8. If the lack of audio at the handset is not resolved, contact C-AT Technical Support at email:

Techsupport@C-AT.com; support is available 24/7/365.

- 17 -

ICRI Local Handset

The handset can be used as a local incident command radio or a troubleshooting device. Up to 250’ of cable

maybe added to the cable length.

Setting up the handset

1. Plug the handset into the handset jack on the exterior of the ICRI. This is the jack, on the outside of

the unit, that is furthest to the left. When connecting the handset, make sure to align the flat side of

the handset connector with the orange dot on the handset jack.

2. The audio level to the handset speaker can be adjusted by the rotating the volume knob above the

jack. Counterclockwise decreases the listening level, and clockwise increases the listening level.

3. Set the audio level to mid position.

4. Select the talk group you will be listening/talking to and set three-position-switch above the handset.

5. The handset microphone is enabled when the push-to-talk bar on the side of the handset is depressed

and held down.

Disconnecting the handset

1. To remove the handset for storage, push inward on the handset connector and turn counter clockwise

to release the locking mechanism.

2. Then pull the connector straight out of the jack. Hold the barrel of the connector rather than the

cable.

FIGURE 10: HANDSET INTERFACE JACK

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Optional SATPHONE, Land-line Telephone, Cellular Phone Interface

ICRI Land-line Telephone link using RJ-22 connection The ICRI can be configured with an optional RJ-22 jack adapter (P/N 179.0805)

that attaches to the 8-pin jack on the outside of the ICRI-E. This adapter will

provide the user the ability connect a standard telephone handset cable to the

front of the ICRI.

FIGURE 11: RJ22 ADAPTER

FIGURE 12: ICRI-E WITH RJ22 ADAPTER INSTALLED

To use the RJ-22 jack adapter with a land-line, on your standard phone, disconnect the cable from the

handset of the phone while leaving it connected to the telephone base. Plug the cable directly into the RJ-22

jack on the adapter.

Select the talk group switch of the handset and telephone.

After the interconnect cable from the telephone is connected to

the ICRI, remove the telephone handset from the telephone base.

A dial tone should be heard in the earpiece of the "local"

handset.

Dial the telephone number of another telephone.

When the called party answers, use the handset and begin to

converse with the called party. The telephone will interoperate

with the other devices that share its talk group.

FIGURE 13: RJ22 CABLE AT TELEPHONE

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NOTE: Third party needs to be aware of basic radio etiquette and delays for radio keying; otherwise,

they will monopolize the radio channel or will not be properly understood by the radio users.

FIGURE 14: ICRI-E CONNECTED TO A LAND-LINE TELEPHONE

Cellular telephone link

If a cellular telephone will be linked through the ICRI to the 2-way radios, an interconnect cable with a

2.5mm plug (part number 179.0693) or 3.5mm plug (part number 179.0717) can be used with the RJ22

adapter.

When connecting to a cellular telephone connect the small, single shaft connector to the headset jack on the

cellular telephone. Be sure it is firmly seated in the telephone.

Plug the RJ22 connector firmly into the ICRI RJ22 adapter jack.

Set telephone’s earphone audio to a mid-level setting following the telephone’s instructions.

The cellular telephone will now operate like a landline as above.

FIGURE 15: TELEPHONE INTERFACE ADAPTER JACK AND CELLPHONE

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Syllabic Rate Squelch System

Introduction

The syllabic rate squelch system (part # 500.3500) for use on voice radio circuits in lieu of the

conventional amplitude based squelch circuits found on most HF radios. Often times setting the

amplitude based squelch circuit on an HF radio to a level required to mute the noise found on most HF

frequencies results in the loss of weak signal reception. The device attempts to overcome this deficiency

by responding to certain speech characteristics as opposed to signal amplitude. The design is such that

very weak voice signals will enable the speaker audio while a degree of immunity to noise is provided

which reduces operator fatigue.

Theory of Operation

Sample un-squelched fixed level audio is fed to the sample audio input of the squelch module. This

audio is divided into two audio frequency bands via a low and high pass filter. The low pass filter passes

audio below 1500 Hz. The high pass filter passes audio above 1500Hz. The output of the two filters is

rectified and summed to produce a zero output voltage when energy in the two bands is equal. (noise).

When speech is present more energy appears at the output of either the high or low pass filter resulting

in a corresponding voltage at the output of the summing circuit. This voltage is subsequently fed to an

additional low pass filter with a cut off of approximately 10Hz. The 10Hz frequency is chosen to

approximate the syllabic rate of normal speech. When a voltage variation at less than 10Hz (speech) is

detected by this filter the output goes high. This output is then fed to a relay which closes and enables

speaker audio to pass.

- 21 -

APPENDIX A: Radio Extension Cable Reel

250’ and 500’ Radio Extension Interface (Cable Reel) P/N: 179.6214 and 179.6211

Positioning one or more of the radios, to be connected to the ICRI at a distance greater than the length of the

interface cable may be desirable for one of several operational reasons:

1. The personnel associated with a radio will be located inside a building for which there is poor RF

coverage from the ICRI’s location.

2. The personnel associated with a radio will be located inside a tunnel or other below grade area for

which there is poor RF coverage from the ICRI’s location.

3. Radios operating in very close proximity to one another, negatively affect the performance of other

another, such as receiver desensing.

The personnel—equipped with compatible radios—in the same general location of the reel-mounted radio,

will be able to communicate with those operating radios or the handset also connected to the ICRI.

The extension cable is inserted between the ICRI and the radio interconnects cable that is usually connected

directly to one of the radio ports on the ICRI front panel.

NOTE: Multiple reels of cable can be linked together for requirement of greater distance than 250 feet.

There will be no degradation of the communications link for up to 5,000 feet of cable, BUT it is important to

note that if the cable is run near a source of high electrical energy, “noise” from such a device can be

expected to be induced into the cable and reduce---possibly significantly---the quality of the

communications.

It is strongly recommended that the radio link be tested before the personnel enter the area of poor RF

propagation, so that any defects with the cable or the connections will be noted before a safety issue arises--

due to a lack of radio communications.

FIGURE 16: 500’ EXTENSION CABLE

FIGURE

17: “GANGED” EXTENSION CABLES

- 22 -

Set-up of the cable-reel

Equipment required: ICRI, cable-reel, radio interface cable for radio to be placed in the area of poor

RF coverage.

1. Place the radio on the hub/support and secure it in-place with the Velcro™ strap.

2. Connect the cable end that exits from the side of the reel to the radio interface cable. Be sure

to align the flat surface of connector to red dot on the selected ICRI port. Push the cable

onto the jack and turn clockwise until cable locks in place.

3. Connect the other end of the cable to a radio port on the ICRI. Be sure to align the keyway

and secure the connectors together with the locking ring on the male connector.

4. Before entering the confined space, verify that the radio link between the entry team and the

radio connected directly to the ICRI is operating properly.

5. If needed, connect additional cable reels between the ICRI and the first reel (up to a total

distance of 5,000 feet).

NOTE: If the cable will be used to place a radio in a stairwell, or on a building roof, hill or tree

top to enhance the operating range of the radio, then it may be preferable to have the cable reel

located beside the ICRI and the radio connected to the unspooled end of the cable. In this case

reversal cables are needed.

Set-up of the cable-reel with reversal cables:

Attach one end of cable “A” to the male connector located near the center hub on the reel. Attach

the other end of cable “A” to an ICRI radio port.

A

Attach one end of adapter “B” to the female connector at the “free” end of the cable. Attach the

other end of adapter “B” to a radio interface cable.

B

With this configuration, the cable reel will remain with the ICRI unit and the radio would travel to

the incident site or remote location for better operating range of the radio.

FIGURE 18: REVERSAL CABLES

- 23 -

ICR

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P/N

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- 24 -

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- 25 -

APPENDIX B: Connector Pin-out Data

IMPORTANT!

6V TO 24V

FIGURE 19: ICRI PIN OUT DATA

- 26 -

APPENDIX C: ICRI Applications

TAPE RECORDER

MOBILE VEHICLE-MOUNT RADIO

RECEIVERBODY WIRE

FIGURE 20: REPEATING BODY WIRE SIGNAL

TALK AROUND

TOWERTRUNKING SYSTEM

INCIDENT COMMANDERTRUNKED RADIOTALK AROUND

INTERFACE

UP TO 5,000'CABLE

TRUNKED RADIO

FIGURE 21: BELOW GRADE OR IN-BUILDING LINK TO TRUNKED REPEATER

- 27 -

8 "AA" BATTERY PACK

CIGARETTE LIGHTER

ALLIGATOR CLIPS

RED

BLACK

32

1 1 1 1

INTERFACE CABLE

OR

OR

UP TO 5,000'

ICRI-E with Attachments

Ports are not radio specific1

1

(mobiles or portables)

2 User instructions on inside plate

Interconnect cable technical3notes in top of ICRI lid.

(Not To Scale)

AC POWER SUPPLY

COM MUNICATIONS- AP PLIE D TE CHNOLOGY

CAGE CODE : 0EEY2

P/N: 179.***

OR

FIGURE 22: ICRI-E WITH ATTACHMENTS (NOT TO SCALE)

- 28 -

APPENDIX D: ICRI Chassis

FIGURE 23: TOP COVER OF THE ICRI

- 29 -

APPENDIX E: ACCESSORIES

Description Part Number

POWER OPTIONS FOR ENVIRONMENTAL ICRIs

100-240VAC adaptor (voltage regulated in-line switching power supply) 320.0446

24VDC power cable, 10’ length with NATO slave connector 179.0757-10

DC input cable - 2 Pin female inline connector to battery clips (6-12VDC input) 179.0758

Headset/Handset Cables

PTT Handset 280.0125

Headset 281.0912

Remote headset jack with push-to-talk switch coiled cord 295.0155

Telephone Cables

Telephone adaptor Environmental 8 pin connector to RJ 22 connector, use with 179.0717 and 179.0693, land-line telephone, or VoIP phone

179.0805

Direct connection interface cable to generic, 2.5 mm plug for Iridium satellite phone jack, for use with RJ series port P/N 179.0801

179.0693

Direct connection interface cable to generic, 3.5 mm plug cellular telephone jack, for use with RJ series port P/N 179.0805

179.0717

Radio Cables

BENDIX KING™ EP, LP, GP series, PRC 127 interface cable 179.0695

ERICSSON™ MA/COM™ LPE 200 radio interface cable/amplifier 179.0684

ERICSSON™ MA/COM™ MRK radio interface cable/amplifier 179.0685

ERICSSON™ MA/COM™ Jaguar, P5100, 700P,P7100, P7200 radio interface cable/amplifier 179.0728

ICOMTM F50/F60/F80 interface cable 179.0688

ICOMTM F3, F3S, F4, F4S, F4TR, F10, IC-H2, H6, J12, M5, U12, U16 interface cable 179.0616

ICOMTM F11, F11S, F14, F21, F21S, F33GS, F33GT, F43GS, F43GT, F43TR interface cable 179.0624

ICOM™ F8101 HF radio interface cable with environmental connector 179.3826

MOTOROLA™ Motorola MCS 2000 interface cable radio interface cable with environmental connector

179.0625

MOTOROLA™ ATS2500 radio interface cable with environmental connector 179.0694

MOTOROLA™ XTL 1500 interface cable w/ speaker and ignition leads with environmental connector

179.0939

MOTOROLA™ Astro/Saber, Saber I, II, and III interface cable 179.0613

MOTOROLA™ MT-2000, JT-1000, HT-1000, MTS-2000, MTX-6000, MTX-838, XTS-1500/2500/3000/5000 & EF Johnson 5100 interface cable

179.0614

MOTOROLA™ XTVA interface cable 179.0619

MOTOROLA™ HT750, HT1250 interface cable 179.0694

MOTOROLA™ Spectra interface cable (“Y” cable/box so normal function of radio is not affected by ICRI line)-Specify pins required 15, 25, or 37

179.0683

Hytera MD78x radio interface cable with environmental connector 179.1853

Hytera PD78x/988 radio interface cable with environmental connector 179.1851

Codan NGT SRx 179.0908

SINCGARS, Codan 2110, Harris 7800V, Thales PRC6809, and other “green gear” radio interface cable with environmental connector

179.0615

KENWOOD™TK 280/290/380/390/480/481 interface cable 179.0682

NEXTEL™ i1000 and r750 cell phone/ radio interface cable for radio mode 179.0686

- 30 -

NEXTEL™i205, i305, i530, i730 cell phone/radio interface cable for radio mode 179.0687

Universal radio interface cable (requires radio speaker/mic assembly to be provided for disassembly)

179.0689

Cable-Reel Cables

250’ universal extension cable with reel and radio “holder” (used in conjunction with any radio interface cable) - with environmental U229 connectors

179.6214

500’ universal extension cable with reel and radio “holder” (used in conjunction with any radio interface cable) - with environmental U229 connectors

179.6211

ICRI Cable Reel Reversal Cables, set for Environmental ICRIs (part numbers 179.6215 and 179.6216)

179.6223

MISCELLANEOUS OPTIONS

Extra set of rechargeable battery 160.0347

Battery Charger 180.0292

Speaker port for use with amplified speakers or recording devices (3.5mm jack). One required per talk group

500.9312

Portable speaker 4W 8ohms 131.0160E

Back Pack 330.1301

Waterproof Case without foam insert 990.0609

- 31 -

APPENDIX F: ICRI Board Adjustments

LO

CA

TIO

N O

F A

DJU

ST

ME

NT

S

R275

CH

AN

NE

L2

1

R27

R43

3

R60

R77

R222

R159

R211

R206

R243

R238

R254

R334

HA

ND

SE

T

TO

T A

DJ

R350

45

R94

PH

ON

E

AC

OU

T

R126

OU

TW

IRE

D

R135

WIR

ED

A

C I

N

R106

SE

NS

.

INR129

TA

IL

R339

INR

188

R307

R270

R286

R302

R318

WIT

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UT

JU

MP

ER

, L

ON

G B

LO

CK

ING

- 2 S

EC

WIT

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UM

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R O

N, S

HO

RT

BL

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KIN

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NC

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UM

PE

RS

JP

19 T

0 J

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(ST

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NO

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. D

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.

- 32 -