GEMELLI S.p.A. Via Piave, 18 20010 Canegrate (Mi) - Italy Ph: +39 0331.402943 Fax: +39 0331.747890

www.gemelli-aerocom.com e.mail: info@gemelli-aerocom.com

Since 1947 the problem solver for on board

aircraft communications

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Gemelli Company started the operations in 1947 under the name of “Laboratorio Radio di Gianni Gemelli” with design and manufacture of radio tranceivers for aeronautical and marine applications.

During the 60’ and 70’ Gemelli turned is production to the Intercom Systems (ICS) for aeronautical

Aircraft such FIAT AVIAZIONE (today ALENIA) F104G e S, G91, G91Y, G222, PIAGGIO P148 e P166, AERMACCHI MB326, SIAI MARCHETTI SF260 and S211

In the same period all the AGUSTA helicopters were equipped by Gemelli ICS.

From Gemelli facility more than 20.000 units were supplied to the Customers.

In the 80’ Gemelli was continuing developing a new generation of ICS that are still today the main components of the Gemelli production.

THE HISTORY

Gemelli radio have been used in 1954 by Italian team who first reached the K2 summit and also, in 1960, as official radio for the Olympic Games in Rome

1947

’50-’60

’60-’70

’80

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Many of the programs started in that period do not have Gemelli presence.

At the end of the 90’ Gemelli change the ownership and the new management introduced a new development line dedicated to the Active Noise Reduction technology. This new line was referred as “WONDERCOM and includes headset and helmets for flying operations.

In the last two years Gemelli continued to invest on research including the development of Digital ICS and Wireless system for communications inside and outside the aircrafts. Contemporary a new project for an innovative helmet was launched.

During the 90’ Gemelli was obliged to reduced the activity for financial problems arising from the crisis of EFIM, a group that have the control of Agusta. When the activity restart the Ownership decides do not invest additional money and the activity is only related to the support of the existing equipments.

To recover the programs started in that period the new ownership decides to invest in a development of system able to substitute the equipment installed on the lost programs and acquires the majority of the new Italian programs. The results was very positives and today the Gemelli ICS equips:

Agusta: A129, A109Power, A109Nexus, AW139, AW149, AW169, AW189;

Aermacchi: MB339, M346; M311

Alenia: C27J;

Others: AB212-412, CH47

THE HISTORY

‘90

fine ‘90

2000-

2008

2009-

2012

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NATIONAL ACTIVITIES

2004

Acquisition from Agusta Westland of a contract for development and

production of ICS System for AW139 Helicopter 2005

2006 Acquisition from Aermacchi of a contract for development and

production of ICS System for M346 Aircraft Trainer

2007

2008

2009

2010

2011 Acquisition from Agusta Westland of a contract for development and

production of ICS System for AW149 Helicopter

Acquisition from Selex Elsag a contract for production of the Wireless

system installed on EH101 Helicopter for Italian Navy.

Acquisition from Italian MOD of a contract for the development of a

New innovative Flying helmet

Acquisition from Alenia Aeronautica of a contract for maintainance

and repair, as approved repair station, of the ICS installed on C130J

ITP from Agusta Westland for development of ICS system for AW169

Helicopter

Acquisition from Aermacchi of a contract for development and

production of ICS System for MB339 Aircraft Trainer

ITP from Agusta Westland for development of ICS system for AW149

Helicopter

2012 Acquisition from Agusta Westland of a contract for development and

production of ICS System for AW169 Helicopter

Acquisition from Agusta Westland of a contract for development and

production of ICS System for A109 NEXUS Helicopter

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INTERNATIONAL ACTIVITIES

2004 Cooperation with Lockheed Martin for development of a new helmet for

fighter pilots including an Active Noise Redaction System

Contract acquisition from Lockheed Martin for a supply of headsets for

“F-35 Joint Strike Fighter ground operators. 2005

2006 Acquisition of a license from the US Company Sanmina-Sci for the

maintenance of there ICS installed on C130J

Starting verification of possible acquisition or opening a branch to

implement Gemelli presence in US.

2007

2008

2009

2010

2011 Invitation and participation to a bid for more than 250 helicopter in India (bid

cancelled)

Cooperation with a US Company on the development of advanced digital

ICS system for AW149 Helicopter

Upgrade of the SF260 ICS of Tunisian Air Force

Definition of the agreement for production and commercialization of

wireless/full duplex with the French partner

Acquisition of a contract for the supply of ICS installed on the CH47

delivered to UAE

Development, in cooperation with a French Company the wireless system

2012 Opening of the Gemelli Communications LLC US branch of Gemelli

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The GEMELLI on board analogue I.C.S.

System Product Lines

•GEM 1001

•GEM 1002

•GEM 1010

•GEM 07

•GEM 1011

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The GEMELLI on board digital I.C.S.

System Product Lines

•GEM 05

•GEM 1014

•GEM 1300

•GEM 2001

•GEM 2010

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indietro -avanti

MCCU MCCU

CO - PILOT PILOT

PASSANGERS

PAP

AW 109 Power

GEM 1002

for

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MCCU MCCU

CO - PILOT PILOT

MCCU

OPERATORS AW 119 Koala

GEM 1002

for

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AW 109 Nexus

GEM 1010

for

MCCU MCCU

PSM

COCU

RIB

CO - PILOT PILOT

OPERATORS

PASSANGERS

RADIO INTERFACE

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AW 109 Nexus

New Layout

For NVG

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MCCU MCCU

CO - PILOT PILOT

MCCU

OPERATORS

MCCU

OPERATORS

RIB

RADIO INTERFACE

AB 212/412

GEM 1002

for

The GEM 1006 Communication System for CH47

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THE GEM 1001 on MALAYSIAN MI-17/24

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The GEM 1006 Communication System for AGUSTA AW139-EMS cabin

COCU: Cabin Operator

Communication Unit

COCU: Cabin Operator

Communication Unit

PAU: Passengers

Audio Unit

ICDU: Passengers

Audio Unit

Cockpit ICS

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The GEM 1005 for Communication Management in AGUSTA AW139 cabin

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Cockpit ICS

COCU: Cabin Operator

Communication

Unit

8 passengers 8 passengers

COCU: Cabin Operator

Communication

Unit

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AW 169

GEM 1030

for

DPAU DPAU

CO - PILOT PILOT

DCSU

OPERATORS

DCCU

DIGITAL CONTROL UNIT

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AW 149

GEM 1040

for

DPAU DPAU

CO - PILOT PILOT

DCSU

OPERATORS

DCCU

DIGITAL CONTROL UNIT

The GEM 1007 Communication System for ALENIA AERMACCHI TRAINER MB-339

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PTCU: Pilot & Trainer

Communication Unit

PTCU: Pilot & Trainer

Communication Unit

Pilot Trainer

GCJB: Ground

Crew Jack Box

Ground Crew

Operator

PTCU: Pilot & Trainer

Communication Unit

PTCU: Pilot & Trainer

Communication Unit

Pilot Trainer

The GEM 1007 Communication System for ALENIA AERMACCHI TRAINER M346

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RADIO BASE

REMOTE CONTROL PANEL

WIRELESS HEADSET

AW 169

Wireless VIP

Cabin

for

Wireless System for

AW 101 C-SAR

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Wireless System for

Alenia C27 J

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Wireless System for

Ground Operation

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FULL DUPLEX WIRELESS SYSTEM typical applications

communications during

winch operations

control of loading and

unloading operations

Pre flight check

communications

THE COOPERATION WITH SANMINA-SCI

C-130J/C-27J: on board

communication system C-130J/C-27J: GEMELLI I-Level and

D-Level Maintenance Repair Facility

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HEAD SETS FOR ON BOARD APPLICATION

WONDERCOM: ACTIVE NOISE REDUCTION PRODUCTS

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HELMET A.N.R. KITS FOR ON BOARD APPLICATION

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WONDERCOM: ACTIVE NOISE REDUCTION PRODUCTS

THE PROBLEM OF NOISE ABATEMENT

A.N.R. TECHNOLOGIES – THE PRINCIPLES

In the last ten years, noise abatement technology using active system has undergone

significant development. Such technologies, also known as A.N.R. (Active Noise

Reduction), place undesirable ambient noise levels under control and drastically reduce

the impact on the operators who have to support such conditions by means of the real

time generation of signals in equal counterphase in modulation and frequency to the

pre-existing disturbance. Clearly, the closer to the reality is the mirror image of the

noise disturbance created in the real time, the greater the active reduction system will

be effective.

ANR is under patent from Technofirst

S.a. Aubagne (F)

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SOME DEMONSTRATIONS

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SOME DEMONSTRATIONS

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THE PROBLEM OF INTELLIGIBILITY IN

COMMUNICATIONS

M.A.N.P. TECHNOLOGIES – THE PRINCIPLES The communication is in any case contaminated by outside noise together with the

voice communication signal entering the microphones, so is necessary to adopt a

system capable of discriminating the signals present on the microphone line and

distinguishing the communication from the noise that accompanies it.

This system exists today and is patented under the name of M.A.N.P. (Microphone

Active Noise Processor). It has the following features:

• in the presence of noise only, it strongly attenuates the signal present, so

a VOX device will never be open

• in the presence of communication and noise, it discriminates between the

two signals, enhancing the breadth of the communication and strongly

attenuating the noise

Practically it enables a microphone to be capable of distinguishing between the

voice signal entering into the communication lines from the noise present in the

environment. Thus the most important problem deriving from the use of A.N.R.

techniques, is solved.

MANP is under patent from Gemelli

Srl Canegrate (I)

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THE PROBLEM OF INTELLIGIBILITY IN

COMMUNICATIONS

M.A.N.P. TECHNOLOGIES – THE PRINCIPLES

It is known that in communications systems the signal to noise ratio is the

fundamental parameter to obtain the correct intelligibility of the information

transmitted and received.

Research has shown how the intelligibility of communications deteriorates due to

the undesirable presence of low frequency noise. This tends to eliminate a number

of articulate fragments of the conversation, which consequently becomes

impossible to understand fully.

As we have already seen, the A.N.R. system can be used to significantly reduce the

presence of low frequencies, in this way bringing about a considerable

improvement in the capacity to communicate in environments with high noise

levels.

But it is important to point out that the definition “everything that enters the

communications microphone is the signal desired” does not fully satisfy the

requirements of a communication with a high signal to noise ratio.

MANP is under patent from Gemelli

Srl Canegrate (I)

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A.N.R. & M.A.N.P. TECHNOLOGIES The M.A.N.P. circuits, when used in conjunction with “intelligent” VOX circuits, are

enabling the personnel wearing A.N.R.-M.A.N.P. earphones or helmets to achieve a

communication path with a best possible signal to noise ratio

With M.A.N.P.

deactivated the

noise enters the

microphone line

Noise

Communication

Audio output

With M.A.N.P. and

intelligent VOX, the

intercom line is closed

even in the presence of

high level noise

With M.A.N.P. and

intelligent VOX, even at low

VOX sensitivity levels the

communication crosses

the intercom with virtually

no noise present

MANP is under patent from Gemelli

Srl Canegrate (I)

ANR is under patent from Technofirst

S.a. Aubagne (F)

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THE COOPERATION WITH LOCKHEED MARTIN

GEMELLI JOINS THE “JSF CLUB”

Gemelli has proved itself at the highest technological level. Lockheed Martin

has, in fact, just awarded its research and manufacturing facilities in

Canegrate an important contract for the supply of protective headsets for the

F-35 Joint Strike Fighter System Development & Demonstration (SDD)

Support Equipment Program for ground personnel assigned to F-35 aircraft

development activities. The JSF is the latest, most important aeronautical

program to be launched by the U.S. Government and is expected to dominate

the manned fighter arena for the next 30 years or so.

Gemelli’s success in this project crowns years of study and dedication to

producing the best possible solutions to protect personnel working in

extremely noisy environments.

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THE COOPERATION WITH LOCKHEED MARTIN

In 2004 GEMELLI started to cooperate with LOCKHEED MARTIN to develop an active

noise reduction system for the fighter Pilot Helmets

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FURTHER USE FOR THE M.A.N.P. SYSTEM

It is interesting to note that, as the M.A.N.P. system is able to discriminate between

the communications signals and the noise present on the line, it can also be used as a

pilot system for other electronic devices applied to the communication line. It is

possible, for example:

• to completely close the communications line in the presence of noise only (which

will therefore never be transmitted to the operators)

• to pilot a P.T.T. (Push to Talk) switch of any transceiver apparatus without using

the hands

• to enable the operator of an apparatus using a VOX system to communicate

without having to shout to overcome the opening threshold, even in the presence

of particularly high ambient noise levels (the VOX threshold may be reduced and

kept from opening except in the presence of voice communications, as it is

piloted by M.A.N.P. system)

MANP is under patent from Gemelli

Srl Canegrate (I)

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WIRELESS RADIO COMMUNICATION

For

ITALIAN NAVY

EXEMPLE OF COMMUNICATION

noise in a standard headset

noise in a GEMELLI ANR headset

external noise (130 dB)

communication with standard headset

communication with GEMELLI ANR-MANP headset

WIRELESS communication with GEMELLI ANR-MANP headset

play stop

external noise (130 dB)

WIRELESS communication with standard headset

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