-Fitted with high
stability frequency reference TCXO ±10Hz -15°C to +55°C

- 450 channels with frequency range 1.6 to 30MHz.
- Modes USB/LSB/CW/AM/AFSK.
- Power output 125 Watt PEP, power input 12V DC.
- Standard features include scanning, front panel programming, syllabic
mute, signal strength mute, dual control (with remote head) and BITE (built
in test equipment).

- Meets MIL-STD 810E for shock and vibration, ETSI 300 373 tech.
spec., IEC 945 EMC, vibration and environmental spec.

Includes :

- Hand microphone with channel up/down buttons.
- DC power cable - 6 metres.
- Barrett 950 operation and installation manual.

Barrett 950 HF SSB transceiver full spec

Advanced

The Barrett 950 transceiver is a state of the art, 125 Watt HF
transceiver designed specifically to satisfy the long distance
communications requirements of government, private organisations and
individuals operating in remote and rugged environments. Utilising
the "free to air" nature of HF communications spectrum the Barrett
950 transceiver provides remote communications with no ongoing call
charges.

Strength

Housed in an extremely strong, corrosion resistant, custom extruded
aluminium chassis, with generous heat dissipating capabilities, the
Barrett 950 will operate in both voice and high duty cycle data modes
in mobile and fixed stations. The Barrett 950 is built to the
specifications of European Standard ETS 300 373, a standard developed
for the exacting role of international maritime distress
communications, and exceeds the requirements of Australian land
mobile communications standard RB209.

Features

In addition to the standard features you would expect in a
professional HF transceiver, the Barrett 950 offers optional features
such as selective calling for simplified network operation, an
internal GPS receiver to enable vehicle tracking, a voice scrambler
module for security and a FED STD 1045/MIL - STD-188-41A internal fit
ALE module.

Accessories

Teamed with Barrett's large range of mobile and base station
antennas, HF data modems and automatic HF telephone interconnects and
even more importantly with Barrett's international service backup,
the Barrett 950 transceiver will provide long distance voice and data
communications for all environments.

Full HF spectrum coverage

Transmit and receive frequency range from 1.6 to 30MHz.

125 Watt PEP power output

The transceiver has 125 Watt (PEP) power output in voice mode on all
frequencies.

All mode capability

USB - J3E, LSB - J3E, AM - H3E, CW - J2A and AFSK - J2B.

An optional 500Hz filter is available for CW, SITOR or PACTOR I and
PACTOR II use.

Selective call - "Selcall"

Selective call - Selcall - provides a simple and efficient method of
calling stations within a network. With the combined "Selcall -
Telcall" option fitted - all current derivatives of CCIR 493 format
can be programmed into the 950 transceiver on a channel by channel
basis.

Direct dial telephone calls

The "Telcall" portion of the "Selcall - Telcall" option provides
direct dial telephone access using a Barrett 660 or 960 HF telephone
interconnect as the interface between HF network and the telephone
network.

Scanning

Channel scanning combined with the "Selcall Option" means calls will
always get through, no matter what frequency or channel is
operational due to propagation. Two scan tables are available,
channels can be programmed as members of either table or both.

Emergency selcall with geographical position

The Barrett 950 displays and annunciates emergency selective calls,
also showing the position of the station sending the emergency call
if it is fitted with a GPS receiver.

HF fax and data

With the widespread use of HF as a data transmission medium, the 950
transceiver is specifically designed for high duty cycle operation
and has as standard an auxiliary connector that is fully featured to
interface to a variety of external modems including the Barrett 923
fax and data modem.

450 user configured memory channels

A powerful, channel based, configuration system allowing all channels
to have individual characteristics as follows:-

Separate transmit and receive frequencies.
Operation mode -USB-J3E, LSB-J3E, AM-H3E,CW-J2A, AFSK -J2B.

Visual display of channel use.

Scan table membership - member of scan table one, two or both.

High or low power select

Optional antenna socket selection - two antenna sockets available for
selection on a channel by channel basis.

Selective call format

All common CCIR 493 derivatives in use today can be selected.

Simple functional display

All operational information is easily viewed on a temperature
compensated LCD that has adjustable back-light features for night
operation.

GPS tracking

For position tracking applications, an internally fitted GPS receiver
module or external GPS receiver with NMEA 0183 data output can provide
position information to a 950 transceiver which can be interrogated
from another 950 station using a special selcall sequence. This,
combined with a base station that has a Barrett 977 PC based GPS
tracking package, provides both logistic and safety management of a
vehicle or vessel fleet.

Statcall

A selcall based diagnostic tool that enables interrogation of remote
transceivers to retrieve vital transceiver operating parameters.

Pagecall

An option that enables a PC connected to the 950 to send a 32 digit
alpha numeric message to any Barrett transceiver fitted with selcall.

Voice security

When message confidentiality is required a "scrambler" option is
available which provides a medium level of voice encryption. for
message privacy even under the most arduous propagation conditions.

Scan resume - no missed calls

If the transceiver has been left unattended it automatically returns
to scanning and is ready to receive calls on any channel.

Syllabic mute (squelch)

Only responds to human voice and is immune to noise burst etc.

Selcall mute (quiet line)

When using Selcall scanning this mute only opens when a selcall is
directed to a specific transceiver. This reduces operator fatigue as
the operator is not obliged to listen to HF noise or traffic not
directed to him.

ALE - Automatic Link Establishment

The ALE option simplifies the operation of HF networks, automating
many of the procedures necessary to establish and maintain an HF
link. The internally fitted option is fully inter operable with FED
STD 1045 ALE systems. It is also capable of full 16 digit telephone
dialling (using FED STD 1045 ALE as the signalling medium) with
Barrett 960 ALE equipped telephone interconnects.

BITE - Built In Test Equipment

To enable simple in field diagnostics of suspected faults the BITE
tests receiver performance, selcall operation, syllabic mute
operation, VCO operation and serial communications port viability.

Fully EMC tested to IEC 945 standard

New extruded chassis and circuit design eliminates any spurious
radiation - enables closely co-located operation with VHF and UHF
transceivers, without interference.

Built in antenna VSWR indication

For field staff to check the correct operation of antennas, the tune
function displays antenna forward and reverse power.

Second antenna connector

An optional second antenna connector allows each channel to select
one of two antennas - ideal when long and short distance antennas are
used.

Rugged construction

An extruded aluminium chassis combined with a rugged weather
resistant glass reinforced nylon front panel has been designed to
withstand harsh and hostile environments. Extensive vibration testing
and temperature cycling has proved the Barrett 950 will operate in
the worlds toughest environments. Compact, easy to install remote
control head for vehicles. Available in a remote control
configuration the 950 is ideal for installation into today's compact
vehicles. In specialised applications the 950 can be used in a dual
control configuration with both a front panel and a control head.

Transceiver programming

Programming is achieved either using the front panel (depending on
local legislation) or a personal computer loaded with a Barrett 900
series transceiver programming package, connected to the 950
auxiliary socket from the computer's communications port. Once one
transceiver has been programmed all other transceivers that are to be
used in a network can be "cloned" with identical data by using a
Barrett "cloning" cable plugged between their auxiliary sockets.

Auxiliary socket

The auxiliary socket provides connection to external HF data modems,
HF telephone interconnect systems and remote control systems.
Commonly used signals available on the auxiliary connector include -
600 Ohm balanced receive audio output, 600 Ohm balanced transmit
audio input, PTT input, scan stop input from external HF data modems,
external position information input from NMEA 0183 standard GPS
receivers and RS-232 control.

Compact size

Measuring 245mm x 330mm x 75mm, the Barrett 950 is the smallest fully
featured commercial synthesised transceiver on the market today.

Rack mounting

As with all of the Barrett 900 series HF equipment, a 2U 19" rack
mount conversion kit is available for the Barrett 950.

Computer control

When fitted with the RS-232 control option the Barrett 950 provides
complete control of all transceiver functions via the 9600bps
communications port - ideal for use by systems' integrators such as
the Barrett 974 system integration unit.

Tunable receiver

Tunes all frequencies, in all modes, between 500kHz to 30MHz down to
1Hz steps.

Microphone

Uses an easy to replace, commonly available, industry standard plug.

Noise blanker

A separate receiver within the 950 generates the noise gating pulses
which gate a new technology high speed switch providing superior
impulse noise blanking performance.

Security function

A built-in function allows a network operator, using a Barrett 950
transceiver, to send a unique coded selective call to "kill" a stolen
transceiver. Once "killed" the transceiver must be unlocked using a
special code sequence.

Transmit time out function