Handsets - HOLMCO

Handsets

Handsets form the interface between user and
technology. They let you communicate clearly
despite background noise. They also provide a
certain degree of privacy when you do not want
to be overheard by people around you.
Our handsets are intended for mobile and
stationary use. Thanks to our modular design
system, the optimum configuration can be
created for every application.
If required, we will adapt our products to your
personal needs. We also develop custom
solutions to order.
HOLMCO products are made in Germany to the
highest quality standards. They are designed to
last, but if repairs are required we stock spare
parts to keep our products working even longer.
Holmberg GmbH & Co. KG is certified to DIN EN 9100 (includes DIN
EN 9001), is ATEX certified in accordance with EC Directive 94/9/EC
for equipment in potentially explosive atmospheres, is an approved
production organisation of aviation equipment in accordance with
EASA Annex requirements (Part 21), Section A, Subpart G and is an
approved maintenance organisation in accordance with EASA Annex
II requirements (Part 145), part A.

1
Handsets
Content
Basic principles 2
masterset 5
Funk 60 6
Funk 70 8
Funk 750 10
Funk 75 12
Funk 75 | Funk 750 accessories 14
N-40 16
N-32 22

2
Handsets
Microphone
Dynamic microphones
Dynamic microphone
Dynamic microphones use the principle of electromagnetic
induction. The dynamic microphones from HOLMCO work
on the moving-coil principle. They contain a diaphragm that
is fixed to a moving coil. The coil is positioned in a static
magnetic field generated by a permanent magnet. As the
sound waves hit the microphone, they set up vibrations in
the diaphragm, which are transferred to the coil.
The movement of the coil in the magnetic field induces a
signal voltage that is proportional to the incident sound.
Dynamic microphones do not need a power supply.
They can tolerate very high sound pressures and are also
extremely durable and reliable, so are ideal for use in harsh
environmental conditions.
Electret microphones
Condenser microphone
The electret microphone is a special type of condenser
microphone. A moving diaphragm and a fixed back plate
form a parallel-plate capacitor, which is charged with a
DC voltage. The sound waves hitting the microphone make
the diaphragm vibrate. As a result, the capacitance varies,
which causes voltage variations across the resistor that are
proportional to the incident sound signal. In the electret
microphone, an electric charge is permanently »frozen«
in the diaphragm or in the back plate.
This removes the need for a DC voltage for the transducer,
so an electret microphone only needs a power supply for its
output amplifier. The electret microphone has the merits of
good signal quality and low cost. Electret microphones are
extremely small, making them easy to fit even into compact
housings. They are relatively insensitive to electromagnetic
interference, which is particularly important for digital
radio communications.

3
Handsets
Directional pattern
The directionality or polar pattern of a microphone describes
how its sensitivity varies with the angle of incidence
of the sound. It is basically determined by the mechanical
design of the microphone.
Directional patterns
Omnidirectional
A microphone that has an omnidirectional pattern is equally
sensitive to sound waves from any direction. All ambient
noise is picked up, so that the user at the other end of the
line gets an acoustic impression of the situation at the
place of use.
The omnidirectional characteristic is ideally suited to applications
with low to moderate noise levels. If high levels of
background sound make communication difficult, however,
then a noise-cancelling microphone is preferable.
Cardioid
A microphone with a cardioid pattern picks up sound primarily
from the front and from the side. The microphone
largely screens out sound coming from behind.
This directional pattern is the ideal choice when the interfering
noise source lies behind the microphone. The cardioid
characteristic makes clear communication possible even at
high background noise levels.
Figure of eight
A microphone with the figure-of-eight pattern detects
sound from two opposite directions. Sound coming from
the side is suppressed. The figure of eight is useful when
unwanted noise is mainly coming from the side.

4
Handsets
Earpiece
In our headsets and headphones we use exclusively dynamic transducers as earpiece
capsules. These capsules contain a moving coil positioned in a static magnetic
field generated by a permanent magnet. The coil is fixed to a diaphragm.
The voltage signal applied to the earpiece causes the coil to vibrate, and these
vibrations are transferred to the diaphragm. The vibrations in the diaphragm
generate sound waves that are proportional to the applied signal voltage.
Dynamic transducers can produce very high sound pressures and are also extremely
durable and reliable, so are best suited for use in harsh environmental
conditions. They provide good sound reproduction quality at an attractive price.
Dynamic transducer
Cradle
For use in vehicles, the handset must be held securely in the cradle to prevent it
falling out when the vehicle accelerates sharply. This is achieved by a handset
retainer: a sturdy mechanism that holds the handset in place. Some handsets
include a special cradle-release button. For stationary use, for instance in
control centres, a special handset retainer is not required.
The cradle often includes a cradle switch. This is a switching contact that actuates
when the handset is removed or replaced, allowing detection of when the
handset is resting in the cradle.

5
masterset
Handsets
Handsets
Lightweight handset, available in various colours
Features
Housing
Colour
Weight excluding earpiece capsules
and lead
thermoplastic parts made of ABS copolymer
handset depends on model,
black PTT button
approx. 120 g
Model
Handset excluding earpiece capsules, with PTT button (push-to-talk contact)
4-core coiled cable with connector casing to DIN 46336
Options
Part no.
fern green 88-16-11255
pebble grey 88-16-11254

6
Handsets
Funk 60
Handsets and cradles
The Funk 60 is primarily intended for use in mobile radio communications,
but can also be used in stationary applications.
The model shown here is suitable for outdoor use (IP X5) and is extremely
hard-wearing.
Features
Material
Colour
Weight
Handset including lead
Cradle
Connections
Degree of protection
Microphone
Transducer principle
DC resistance
Directional pattern
Earpiece
Transducer principle
DC resistance
Duroplast
black
approx. 580 g
approx. 325 g
PUR 6-core coiled cable, coiled
length 30 cm, extended length
1.2 m, tinned ends
IP X5
dynamic
240 Ω
omnidirectional
dynamic
240 Ω
Handset
Model
Part no.
with PTT button (push-to-talk contact),
coiled cable with tinned ends 88-11-11625
Cradle
Model
Part no.
Cradle switch with three changeover contacts
Complete with base plate and rubber pad
including fixing parts 98-21-12138

7
Handsets

8
Handsets
Funk 70
Handsets and cradles
The Funk 70 handset is primarily used in mobile radio communications.
Features
Material
high-impact plastic, flammability class UL-94 HB
Colour
black handset and PTT button
Weight
Handset including lead
and fitted plug
approx. 365 g
Cradle
approx. 140 g
Connections PUR coiled cable, coiled length approx. 0.3 m,
extends to about 1.2 m, 10-pin right-angled
U-127/U-D plug
Microphone
Transducer principle dynamic
DC resistance
200 Ω
Directional pattern
omnidirectional
Earpiece
Transducer principle dynamic
DC resistance
300 Ω
Handsets
Model
Part no.
Handset with PTT button (push-to-talk contact),
coiled cable with 10-pin right-angled U-127/U plug 88-12-11026
Handset with PTT button (push-to-talk contact),
coiled cable with 10-pin right-angled U-127/U plug,
with shielded cable for use with digital radio sets 88-12-12743
Cradles
Model
Part no.
Fitted with 9-pin terminal strip:
cradle switch, 2 changeover contacts 98-22-11306
Basic cradle: without base plate 98-22-11301
with base plate (excluding terminal strip) and rubber pad 98-22-11299

9
Handsets

10
Handsets
Funk 750
Units and handsets
The Funk 750 is primarily intended for use in mobile radio communications, but
can also be used in stationary applications. The handset and cradle have rounded
edges, reducing the risk of injury when used in vehicles or on-board ship.
The lightweight and ergonomic design is a key feature of this handset, which
includes a large, easy-to-operate PTT button. When resting in the cradle, the
handset is held securely by the firm handset retainer. The matt, textured finish
is designed to suit the harsh conditions experienced in mobile use.
Thanks to our modular design system, the optimum product can be customconfigured
for a particular project from individual components. An extensive
range of accessories is available for installation in desks and consoles,
wall-mounting and more. On request, the Funk 750 can be delivered with cable
acc. to NF F 16-101.
Features
Housing
Lexan 940 high-impact plastic, flame-retardant and
self-extinguishing to UL-94 V-0, halogen-free
Lead
PUR coiled cable, flame-retardant and
self-extinguishing to UL-94 V-0, halogen-free
Colours
black unit, orange PTT button
Weight
Handset including lead
and U-127/U connector approx. 315 g
Complete unit approx. 495 g
Microphone
Transducer principle dynamic (electret on request)
DC resistance
200 Ω (other values on request)
Directional pattern omnidirectional
Earpiece
Transducer principle dynamic
DC resistance
300 Ω (other values on request)
RFI/EMI immunity complies with requirements in DIN EN 50121-3-2
(Railway Applications – Electromagnetic Compatibility)

11
Handsets
Model
Handset with coiled cable,
Cradle with cradle switch (changeover contact), 10-pin terminal strip
and base plate
Options
Part no.
Complete unit 88-14-11183
Handset with PTT button (push-to-talk contact),
coiled cable with tinned ends 88-14-11154

12
Handsets
Funk 75
Units and handsets
The Funk 75 is primarily intended for use in mobile radio communications, but
can also be used in stationary applications. Handset and cradle have rounded
edges and the back of the handset has special foam padding for a softer finish.
This reduces the risk of injury when used in vehicles or on-board ship. The large,
ergonomically positioned PTT button is easy to operate.
When resting in the cradle, the handset is held securely by the dependable handset
retainer. The matt, textured finish is designed to suit the harsh conditions
experienced in mobile use. The housing and lead are made of flame-retardant,
self-extinguishing materials. Thanks to our modular design system, the optimum
product can be custom-configured for a particular project from individual components.
An extensive range of accessories is available for installation in desks
and consoles, wall-mounting and more. On request, the Funk 75 can be
delivered with cable acc. to NF F 16-101.
Features
Housing
Lexan 940 high-impact plastic, flame-retardant and
self-extinguishing to UL-94 V-0, halogen-free
Lead
PUR coiled cable, flame-retardant and
self-extinguishing to UL-94 V-0, halogen-free
Colours
black unit, orange PTT button
Weight
Handset including lead
and U-127/U connector approx. 375 g
Complete unit approx. 550 g
Microphone
Transducer principle dynamic (electret on request)
DC resistance
240 Ω (other values on request)
Directional pattern omnidirectional
Earpiece
Transducer principle dynamic
DC resistance
240 Ω (other values on request)
RFI/EMI immunity complies with requirements in DIN EN 50121-3-2
(Railway Applications – Electromagnetic Compatibility)

13
Handsets
Model
Handset with coiled cable,Cradle with cradle switch (changeover contact),
10-pin terminal strip and base plate
Options
Part no.
Complete unit 88-13-11100
Complete unit, handset with dummy button 88-13-11104
Handset with PTT button (push-to-talk contact),
coiled cable with tinned ends 88-13-11086
Funk 75 USB
For connecting directly to a PC
The Funk 75 USB handset is a plug-and-play device that connects directly to the
USB port of your computer. A separate power source is not required because
power is supplied via the USB port. The cradle, with counterweight and
anti-slip pad, can be placed anywhere on the desk.
Model
Handset with large PTT button
Cradle with anti-slip pad, without handset retainer
Options
Part no.
Black unit 89-13-13152

14
Handsets
Funk 75 | Funk 750 accessories
Handset cradle with base plate
Housing
Colour
Lexan 940 high-impact plastic,
flame-retardant and
self-extinguishing to UL-94 V-0, halogen-free
black
Options
Part no.
With cradle switch and 10-pin terminal strip:
Changeover contact 98-23-11319
Two changeover contacts 98-23-11402
Three changeover contacts 98-23-11333
Changeover contact, separately de-activated
loudspeaker (2 W, 8 Ω) 98-23-11321
Without cradle switch:
fitted with 10-pin terminal strip 98-23-11316
without terminal strip 98-23-11312

15
Handsets
Ball joint with right-angled bracket
Part no.
Sheet steel bracket, polyamide ball joint,
30 % GF, black with fixing parts 22-11-00070
Mounting plate for ball joint
Part no.
Sheet steel, black with fixing parts 20-10-00132

16
Handsets
N-40 series
The N-40 series handsets combine a hard-wearing mechanical design with outstanding
acoustic and electrical properties. The excellent RFI/EMI immunity is a
particular feature. The N-40 series complies with EN 50121-3-2 requirements
(Railway Applications – Electromagnetic Compatibility).
It is housed in a rugged, high-impact plastic body. The housing and connecting
lead are made of halogen-free, flame-retardant and self-extinguishing plastic rated
UL-94 V-0. Plug-in connections are provided between handset, coiled cable
and cradle for easy interchange of the individual components.
The flexible design of the new handset means that it can be customised precisely
to specific project requirements. A choice of cradles makes it easier to find the
right model for the given conditions. All cradles include a cradle switch (expect
the low-profile cradle for the N-40N). On request, the N-40 series can be delivered
with cable acc. to NF F 16-101.
Features
Housing
Lead
Colour
Weight
Handset including lead
Standard cradle
Unit including standard cradle
Microphone
Transducer principle
Directional pattern
Earpiece
Transducer principle
DC resistance
RFI/EMI immunity
Lexan 940 high-impact plastic (polycarbonate)
UL-94 V-0 flammability class, halogen-free
PUR coiled cable, UL-94 V-0 flammability class
halogen-free
black or grey unit
PTT button in orange (N-40SR) or grey (N-40R)
approx. 330 g
approx. 175 g
approx. 505 g
dynamic or electret to customer requirement
cardioid
omnidirectional or figure-of-eight
possible if required
dynamic
200 Ω
also available in 50, 100, 300 or 600 Ω
to order
complies with requirements in
DIN EN 50121-3-2
(Railway Applications – Electromagnetic
Compatibility)

17
N-40SR
Units, handsets and cradles
Handsets
For mobile use
The N-40SR is designed for mobile use, in particular for railway and emergency
services. The noise-cancelling microphone enables good speech quality even in
noisy driving conditions. The generous PTT button is easy to reach. When not in
use, the handset remains securely in the cradle – even when the vehicle accelerates
sharply – thanks to a firm retaining mechanism. The release button in the
handset works intuitively.
The cradles include a cradle switch. In addition to the standard cradle, a compact
single-ended cradle is available that takes up very little space. The handset is connected
to the cradle. A 9-pin D-sub male connector is provided underneath the
cradle as the interface to the customer‘s equipment.
Complete units
Model
Handset with large PTT button
Cradles with secure handset retainer and cradle switch (changeover contact)
9-pin D-sub male connector for connection to customer equipment
Options
Part no.
N-40SR with electret microphone
and standard cradle black 88-33-13397
grey 88-33-13398
N-40SR with dynamic microphone
and standard cradle black 88-33-13399
grey 88-33-13400
N-40SR with electret microphone
and single-ended cradle black 88-33-13401
N-40SR with dynamic microphone
and single-ended cradle black 88-33-13402
Handsets
Model › with large PTT button and coiled cable
N-40SR with single-ended cradle
Options
Part no.
N-40SR with electret microphone black 88-33-13383
grey 88-33-13384
N-40SR with electret microphone
and amplifier black 89-33-13385
grey 89-33-13386
N-40SR with dynamic microphone black 88-33-13387
grey 88-33-13388

18
Handsets
Cradles
Model
With secure handset retainer and cradle switch (changeover contact)
9-pin D-sub male connector for connection to customer equipment
Options
Part no.
Standard cradle in black 98-33-13403
Standard cradle in grey 98-33-13404
Single-sided cradle in black 98-33-13405
N-40R
Handsets and cradles
For stationary use
With its unobtrusive PTT button, the N-40R is intended primarily for control
centres. The noise-cancelling microphone with cardioid characteristic guarantees
good speech quality even in loud noise. If conversations also need to picked up
from the surroundings, then an omnidirectional microphone is also available.
The handset rests free in the cradle.
The cradle includes a cradle switch. The handset is connected to the cradle.
A 9-pin D-sub male connector is provided underneath the cradle as the
interface to the customer‘s equipment.
Handsets
Model
With unobtrusive PTT button and coiled cable
Options
Part no.
N-40R with electret microphone black 88-33-13389
grey 88-33-13390
N-40R with dynamic microphone black 88-33-13391
grey 88-33-13392
Cradles
Model
With cradle switch (changeover contact)
The handset rests free in the cradle (no handset retainer)
Includes 9-pin D-sub male connector
Options
Part no.
black 98-33-13413
grey 98-33-13414

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N-40N
Handsets and cradles
Handsets
For roadside emergency phones
The N-40N handset is designed for installing in roadside emergency phone
units. A special cradle for vertical installation has been developed for this use,
ensuring the unit has a very low profile even with the handset in place.
This means that the N-40N can fit even in shallow enclosures. The handset has
no PTT button, but instead includes a reed contact for indicating on-hook/offhook
(cradle switch function). The noise-cancelling microphone enables good
speech quality even in noisy environments, for instance passing traffic.
The cradle has a purely mechanical function; the handset is not connected
to the cradle. The N-40N handset is held with an easy-release lock in the cradle
and can be picked up readily even by inexperienced users.
Handsets
Model
With reed contact and coiled cable
Without PTT button
Options
Part no.
with electret microphone, black 88-33-13393
with dynamic microphone, black 88-33-13395
Cradles
Model
For vertical installation
Easy-release handset retainer
Options
Part no.
low-profile cradle in black 98-33-13406

20
Handsets
N-40 USB
Units
For connecting directly to a PC
The N-40 USB handset connects directly to the USB port of your computer.
It is plug-and-play compatible. A separate power source is not required
because power is supplied via the USB port. The cradle, with counterweight
and anti-slip pad, can be placed anywhere on the desk.
Model
Handset with large PTT button
Cradle with anti-slip pad, without handset retainer
Options
Part no.
Black unit 89-33-13162

21
Handsets

22
Handsets
N-32
Digital Operator Handset
With ethernet interface (VoIP possible) or LVDS interface
The new N-32 is an operator unit and handset in one device. It can be used as an
operator unit for radios, machines and systems while also acting as the handset
for voice communication. This cuts installation costs and saves precious space in
the vehicle.
The N-32 combines ergonomic design, outstanding acoustics and excellent
user convenience in one unit. The rugged housing sits comfortably in the hand
whichever way you use it. Even left-handed users can operate all the functions
easily with one hand. The colour graphics display can also show high-resolution
photos and is easy to read even under difficult conditions. All controls are illuminated,
with individual brightness adjustment. A noise-cancelling microphone
guarantees high speech quality even in noisy environments.
Thanks to its versatile design, the new operator handset can be modified precisely
to suit specific customer requirements and can be developed with the user to provide
made-to-order solutions. This makes the N-32 particularly attractive to system
integrators who wish to integrate it in their own systems and applications.

23
Features
Handsets
Intended use
Keypad
Display
Handset
Software
Interface
Connecting lead
General features
Digital operator unit
Handset for voice communication
30 programmable buttons
All buttons backlit with adjustable brightness
Definite pressure point prevents accidental operation
True single-handed operation
2 inch TFT display, full graphics capability
320 x 240 pixels, or alternatively 240 x 320 pixels
16-bit colour depth
Adjustable backlighting
Scratch-proof surface
Anti-reflective, anti-shatter foil
Noise-cancelling microphone
High-performance earpiece capsule
High speech quality even in noisy environments
Illuminated PTT button
Integral hands-free function
(an external loudspeaker is then used for listening)
For handset functions: firmware
For operating functions: custom software
Ethernet interface or LVDS interface
PUR 7-core coiled cable, black
2 wires separately shielded
Length: coiled approx. 35 cm, extended approx. 2 m
Flame-retardant and self-extinguishing to UL-94 V-0
High-impact plastic, non-toxic
All housing parts made of flame-retardant and self-extinguishing
materials to UL-94 V-0
Complies with VDA requirements
Ergonomic shape
Rounded edges to reduce injuries
Cradle holds handset securely and is intuitive to use
Cradle is easy to fit and takes up little space
All of the electronics are housed in the handset; the cradle is
only used to hold the handset
Entire outer surface including display is resistant to
cleaning agents and disinfectants

24
Handsets
Custom design options
The N-32 offers a large range of customization options:
• All 30 buttons can be programmed according to customer wishes.
• The software that executes the operating functions can be modified
to meet customer requirements.
• The N-32 can be provided with software filters that are designed to a
customer specification for different ambient conditions, e. g. to suppress
noise or echoes.
• The N-32 can be delivered with an Ethernet interface
(that allows the use of VoIP) or a LVDS interface.
• Customers can select the colour they require for the body, keypad face and
coiled cable, as well as the lettering and symbols printed on the keypad.
• The N-32 can be fitted with a different cable if required.
The level of customization depends on your requirements, our capabilities and
obviously also the number of handsets required.
Please let us know your requirements and we can then work out together the
optimum configuration for your application.
Keypad layouts (examples).
Inscription on customer‘s request.

Errors and omissions excepted. Subject to change.
Layout 9|12 › B. Altendorf › algrades.de › Fotos: HOLMCO
Infografik: T. Oppermann, HOLMCO › Druck: Ruksaldruck GmbH

Holmberg GmbH & Co. KG
Ohlauer Strasse 5–11
10999 Berlin
P +49 (0)30 617 80-0
F +49 (0)30 617 80-200
info@holmco.de
www.holmco.de
holmco.de