|
|
| The mobile versions of our 950
and 930 HF SSB Transceivers are designed specifically for use
in land going vehicles such as cars, four wheel drives, trucks,
military vehicles etc. These transceivers combined with our 910
automatic tuning mobile antenna provide the emergency and day
to day communications requirements of vehicles travelling in remote
areas where communications infrastructures are not available or
unreliable. We currently provide mobile transceivers to governments,
aid organisations, large & small businesses and individuals
alike. |
| Barrett transceivers provide
similar communications services to those provided by satellite
but with a lower setup cost. Unlike satellite systems operating
costs are very low and are not reliant on any other communications
infrastructure.
Barrett HF transceivers also support Global Positioning
System (GPS) tracking and location capabilities, providing organisations
with a means to display the position of, vehicles with a digital
map at a control centre. This GPS tracking capability assists
in the coordination of vehicles, maximising the efficiency and
effectiveness of field operations |
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.
|
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.
|
|
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.
|
Transmit and receive frequency range from 1.6 to 30MHz.
|
The transceiver has 125 Watt (PEP) power output in voice mode
on all frequencies.
|
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 - 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.
|
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.
|
|
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.
|
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.
|
|
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.
|
A powerful, channel based, configuration system allowing all channels
to have individual characteristics as follows:-
|
Operation mode -USB-J3E, LSB-J3E, AM-H3E,CW-J2A, AFSK -J2B.
|
|
Scan table membership - member of scan table one, two or both.
|
Optional antenna socket selection - two antenna sockets available
for selection on a channel by channel basis.
|
All common CCIR 493 derivatives in use today can be selected.
|
All operational information is easily viewed on a temperature
compensated LCD that has adjustable back-light features for night
operation.
|
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.
|
|
A selcall based diagnostic tool that enables interrogation of
remote transceivers to retrieve vital transceiver operating parameters.
|
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.
|
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.
|
|
If the transceiver has been left unattended it automatically returns
to scanning and is ready to receive calls on any channel.
|
|
Only responds to human voice and is immune to noise burst etc.
|
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.
|
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.
|
|
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.
|
|
New extruded chassis and circuit design eliminates any spurious
radiation - enables closely co-located operation with VHF and
UHF transceivers, without interference.
|
For field staff to check the correct operation of antennas, the
tune function displays antenna forward and reverse power.
|
An optional second antenna connector allows each channel to select
one of two antennas - ideal when long and short distance antennas
are used.
|
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.
|
|
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 computers 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.
|
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.
|
|
Measuring 245mm x 330mm x 75mm, the Barrett 950 is the smallest
fully featured commercial synthesised transceiver on the market
today.
|
|
As with all of the Barrett 900 series HF equipment, a 2U 19"
rack mount conversion kit is available for the Barrett 950.
|
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.
|
|
Tunes all frequencies, in all modes, between 500kHz to 30MHz down
to 1Hz steps.
|
|
Uses an easy to replace, commonly available, industry standard
plug.
|
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.
|
|
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.
|
If the transceiver has inadvertently been left in transmit i.e.
a microphone jammed under a seat - after a fixed period of time
the transmitter is disabled. It is re-enabled by pressing the
push to talk button momentarily. |
If you would like more information on the
Barrett HF Radio Systems, please email
us.
