Sea Air and Land Communications 123845 Benutzerhandbuch
12-38-0000 VHF AND UHF
TRANSCEIVER
PRODUCT INFORMATION
SEA AIR AND LAND COMMUNICATIONS LTD, CHRISTCHURCH, NEW ZEALAND
SALCOM 12-38 SERIES VHF AND UHF TRANCEIVER
Issue 1238UD 1015
Sea Air and Land Communications Ltd
Page 2
12-38-0000 VHF and UHF Transceiver
DESCRIPTION
The 12-38-0000 transceiver is capable of accurate control and telemetry over long distances. Designed to
be used in hostile environments it can withstand temperature extremes as well as being resilient to
electrical noise often found in industrial plants.
be used in hostile environments it can withstand temperature extremes as well as being resilient to
electrical noise often found in industrial plants.
The on-board SD card is used to store the configuration of unit for easy swap-out and can be also store log
and audio wave files. The unit could be made to respond to an event by seizing a radio channel and
broadcasting the wave file audio. Anyone carrying a radio transceiver could receive the message.
The 12-38-0000 could also be configured as a store and forward radio repeater to extend the radio range of
any installation. This will allow monitoring and control of sites in difficult locations without clear radio
access.
The 12-38-0000 is a 5 watt analogue transceiver with for both transmitting and receiving and comes in two
variants, a VHF (136-174 MHz) or UHF (440 – 470 MHz). All parameters are programmable such as
frequency, power output and deviation.
The RJ45 connector can be used for audio input and output and the RJ12 input connector can be used to
initiate pre-canned audio messages for transmission over the air.
and audio wave files. The unit could be made to respond to an event by seizing a radio channel and
broadcasting the wave file audio. Anyone carrying a radio transceiver could receive the message.
The 12-38-0000 could also be configured as a store and forward radio repeater to extend the radio range of
any installation. This will allow monitoring and control of sites in difficult locations without clear radio
access.
The 12-38-0000 is a 5 watt analogue transceiver with for both transmitting and receiving and comes in two
variants, a VHF (136-174 MHz) or UHF (440 – 470 MHz). All parameters are programmable such as
frequency, power output and deviation.
The RJ45 connector can be used for audio input and output and the RJ12 input connector can be used to
initiate pre-canned audio messages for transmission over the air.
INSTALLATION
The power supply is connected via PI, green power connector to +13.8 Volts DC and Ground. The 12-38 is
protected against reversed supply connections. The power source must be reasonably noise free.
Radiation Hazard: Important! To comply with FCC Controlled/Occupational Exposure Limits the aerial must
be positioned or mounted to operate at least 0.26 metres away from Operational Staff and 0.57 metres
away from the General Public.
It is recommended to site the aerial a few metres away from the 12-38 to avoid the possibility of RF
feedback causing problems with the transmitter operation. An outside aerial is preferable and will provide
better radio coverage. The aerial connection is via the BNC connector and should present a nominal load of
50Ω, with a VSWR of better that 1.8:1.