background image

Introduction 

 

Congratulations on purchasing the new FlightTech ITC-404SP panel mount intercom.  The ITC-404SP is de-
signed using the latest in noise canceling and printed circuit board technology.   With proper installation, the 
ITC-404SP will give many years of reliable cockpit communications for both the pilot and passengers. 
 

FlightTech ITC-404SP Features 

 

Enhanced Noise Reduction

 

 

The ITC-404SP features Enhanced Noise Reduction or ENRI.  The ENRI feature will eliminate or 

greatly reduce all background noise picked up the headsets microphone. Sounds such as engine noise and 
wind noise that are commonly heard with voice operated intercoms when the microphone circuits are open, 
are eliminated with ENRI.   
 

Pilot Isolate 
 

At times, it is desirable for the pilot to listen to ATC and allow the passages to commutate while not 

interfering with the pilot. The Pilot Isolate switch in the “ALL” position allows the pilot to hear and talk to 
every one connected to the intercom. In the “PILOT” position, the pilot will only hear the communication 
radio audio. 
 

Pilot & Co-Pilot PTT 

 

The ITC-404SP includes PTT functions for both the Pilot and Co-Pilot and depending on which PTT 

switch is enabled, either the Pilot or Co-Pilot will key the communications radio and be able to speak. 
 

Auxiliary Audio Stereo Input

  

 

A Stereo Auxiliary input is provided allowing a tape or CD player to be connected to the ITC-404SP. 

The audio output is Stereo and requires Stereo headphones for proper operation. 
 

Auxiliary Audio Muting 

 

The Auxiliary audio will mute when audio form the Communication radio or Intercom audio occurs. 

 

Cellular Phone Interface 

 

The Cell Phone interface will connect the pilots headphones to a Cellular Phone.  Unlike headphone 

with built in cell jacks,  the audio to the phone from the pilot headset is derived from the intercom audio 

processor, eliminating engine noise or other background noise that may be heard during the phone call.  Con-

nection between the ITC-404SP and the cellphone is done through a patch cord with 2.5mm plugs.

 

 

 

 

Fail Safe 

 

In the event that power should fail to the intercom, the pilots headset is automatically connected di-

rectly to the radio microphone and headphone inputs. 

 

Unpacking 

The ITC-404SP intercom comes complete ready for installation and includes the follow. 

• 

Intercom  Unit 

• 

Four 1/4” Stereo Headphone Jacks and mounting hardware 

• 

Four Microphone Jack and mounting hardware 

• 

Connector Housing and  Terminals  

• 

Installation Manual 

• 

Drill Template for mounting the intercom 

• 

Face Plate, Vertical and Horizontal 

Carefully review the constantans to ensure that all of the items are included. If you find missing parts, contact 
the factory. 

Summary of Contents for ITC-404SP

Page 1: ...1 FlightTech Intercom ITC 404SP Four Place Stereo Panel Mount Intercom with Enhanced Noise Reduction Technology FlightTech Intercoms ...

Page 2: ...mmunications radio and be able to speak Auxiliary Audio Stereo Input A Stereo Auxiliary input is provided allowing a tape or CD player to be connected to the ITC 404SP The audio output is Stereo and requires Stereo headphones for proper operation Auxiliary Audio Muting The Auxiliary audio will mute when audio form the Communication radio or Intercom audio occurs Cellular Phone Interface The Cell P...

Page 3: ...r to Page 8 for the connector connections The cable connector is a Molex KK 100 Series housing and crimp terminals The terminals can be crimped onto wire size ranging from 22 to 26 gage 24 gage wire are recommended for the intercom installation Recommended tools for installing the terminals are Molex Crimp Tool part 11 01 0185 Hand Crimping Tool Refer to the photo on page 6 of the two 10 pin conne...

Page 4: ... s PTT Operation of the ITC 404SP The ITC 404SP is one of the simplest intercoms available to operate plug in the headphones turn on the power and start talking It s that easy With the ITC 404SP Enhanced Noise Reduction circuit there are no squelch controls or functions to con tend with Since there are no squelch function either manual or automatic it is not necessary to kick start the audio with ...

Page 5: ...ts microphone to the co pilots mi crophone The pilot can still talk through the intercom but not to the radio Auxiliary Stereo Audio Muting Function When a device such as a CD player is connect to the intercom and stereo headphones are used pilot and passengers can enjoy music while on long trips The Auxiliary Audio will mute when one of two things take place 1 When ever there is audio present fro...

Page 6: ...ng the microphone level control for the lower setting During normal cruise power setting there should be no outside noise com ing through the intercom Communication Radio Line Balance When toggling the Pilot ISO switch a difference in the radio audio level may be heard To correct this level difference a level balance pot VR 4 can be adjusted to set the audio level Locate VR 4 and while listening t...

Page 7: ...ots headset can be con nected directly to the radio headphone input and microphone 4 All work was done in accordance with manufacturer s instructions FAR43 AC43 13 1B Chapter 11 Electrical Systems Sec tion 5 electrical wire rating Section 6 aircraft electrical wire selection Section 7 table of acceptable wires Section 8 wiring installation requirements Section 9 environment protection and inspecti...

Page 8: ...the ITC 2003 stereo intercom install a 33 ohm 1 4 watt resistor to the TIP and RING of each headphone jack HEADPHONE JACK 33 OHM Resistor White White White White White White White Wh Bl White Blue White White Blue White Blue Cable wire colors are for FlightTech supplied cables Passanger 1 Ch 1 Passanger 1 Ch 2 White Blue Microphone Jack from radio cable Headphone Jack from radio cable G ND G ND Gr...

Page 9: ...NOTES 9 ...

Page 10: ...6 00 within USA and it will be repaired or replaced within two weeks Warranty does not cover transportation cost or product misuse accidental dam age owner tampering or reworking Except as provided herein either FlightTech Intercoms or DesignTech Systems makes no warranties expressed or im plied including warranties or merchantability and fitness for a particular purpose NOTE Some states do not pe...

Reviews: