COUGARNET radio system is a modular system that operates using militarised radio
equipment over the bands 68-88Mhz and in 20Mhz segments across 136-174Mhz, and
400-470Mhz additionally a special variant is available to operate down to
380Mhz. It is designed as a secure radio system with the capability of 16kbit
digital encryption using RACAL encryption moduels MA4437 and MA4487 or CESG(UK)
or NSA(US) approved crypto units. There is also an analogue encryption unit
unit is the PRM4515 transceiver hand portable unit. It can be used with a number
of different microphones and headsets and uses a 7 pin Clansman style plug
making it compatible with most Clansman audio equipment, however the Cougar
carries different signals on some of its pins so is not fully clansman
compatible. It uses an MA4516 battery which comes as MA4516A which is a nicad
rechargable also an MA4516B which uses 8 AA cells there is also a lithium non
rechargable disposable battery.
radio comes in a number of variants
which is a 10 channel 68-88Mhz radio with clear speech with 150hz CTCSS transmit
and receive and also two selectable crypto keys A and B and a zeroise facility
to dump the crypto keys
which is a 10 channel 68-88Mhz radio with clear speech
with 150hz CTCSS transmit and receive and clear speech with carrier squelch and
also two selectable crypto keys A and B and a zeroise facility to dump the
which is a 10 channel 136-174Mhz radio with clear
speech with 150hz CTCSS transmit and receive and also two selectable crypto keys
A and B and a zeroise facility to dump the crypto keys.
which is a 10 channel radio in a 10Mhz band selected between 400-470Mhz with
clear speech with 150hz CTCSS transmit and receive and also two selectable
crypto keys A and B and a zeroise facility to dump the crypto Keys.
PRC6515 which is a 10 channel radio similar to
the PRM4515H it differs in that it is capable of 4 crypto codes and the crypto
is filled by using an additional socket which has been added to the side of the
radios can be programmed as single frequency simplex radios or as two frequency
simplex radios per channel.
An appliqué SMT (Static, Mobile, Transportable) unit designated
TA4523 L,H or U is available to turn the unit into a 20w manpack radio.
appliqué unit can also be used with an MA4730 extended control unit to form the
basis of a 20w boot mounted vehicle set.
available is a power supply that the appliqué unit can be mounted on turning the
unit into a local or using the MA4730 a remote controlled base station.
called a DARU (digital analogue repeater unit ) MA4509 can be used to control a
TA4523 appliqué unit as transmitter and another PRM4515 handportable to form an
analogue or digitally encrypted repeater/ talkthrough station. This forms the
basis of the COUGARNET system which takes a number of repeater/talkthrough
stations and links them together either at VHF or UHF.
system is a simplex net with all stations transmitting and receiving on the same
frequency similar to combat net radio (1). The next stage of complexity involves
the use of a well sited repeater/talkthrough station to give wide area coverage
(2). Taking this a stage further gives two linked repeater/talkthrough stations
to provide either two separate nets that can be linked together if/when required
to permit interop between two areas of responsibility or permanently linked to
provide wide area coverage. The ultimate system is a multi linked
repeater/talkthrough system (3).
(1) NORMAL COMBAT NET RADIO (CNR)
(2) 2 FREQUENCY SIMPLEX USING REPEATER
(3) MULTI LINKED REPEATER NETWORK
complex variant of the COUGARNET system is the basis of the secure radio system
used in Northern Ireland by the army. This is made up of Cougar handheld,
desktop, mobile and transportable systems linked into a network of hilltop
sites with repeater/talkthrough units and control links.
linked repeater network is then controlled using an Outstation Link Control Unit
(OLCU) which using overlaid digital control signals from an MA4527 switches
links on and off to configure the network it can also be used to change channels
on the repeater units and to return to the control station a number of
alarms from the repeaters local environment. Such as equipment failures,
intruder alarms and power supply failures.
repeater/talkthrough units and the link units use the same basic equipment this
is the PRM4515 handportable and the TA4523 appliqué unit. This commonality of
equipment simplifies maintenance and permits easy substitution of units to keep
the system operational.
are also two other radios in the Cougar range one is the PRM4735 which comes in
L and H variants with the L version restricted to 76-88Mhz and the H coming
in HA 138-156Mhz and HB 154-172Mhz. The PRM4735 only comes as an encrypted
radio, no clear speach facilities are available. There is also the PRM4535
Cougar Commander this comes in the same ranges as the PRM4515 and specification
is essentially the same, but it has a PTT button on the side and a built in
speaker and microphone.
of Racal Cougar equipment are, UK Army N.I. (PRM4515H), UK
Navy/Royal Marines/MOD Police (PRM4515L/N), UK MOD (PRM4515U), Indian security
forces and Sri Lankan Navy(unknown what variant), United States Airforce (Scope
shield II PRC6515 high band VHF variant), UK Police forces (PRM4515H and
PRM4735H) and also Dutch Police (PRM4515L and PRM4735L).
TA4523 (VERSION SHOWN TA4523H)
TA4523 IN BASE STATION ROLE
MA4730 EXTENDED CONTROL UNIT
RACAL MA4509 DARU
MA4527 NETWORK CONTROLLER
MA4516 REMOTE NETWORK CONTROLLER
RACAL PRM4735 Covert radio
With MA4737 control unit and induction loop transducer for covert earpiece.
MA4073 KEYFILL PROGRAMMING DEVICE
MA4083 FILL GUN