Tait International Limited TBCK4B Manual Do Utilizador
DRAFT 4
TB9400 Installation and Operation Manual
Description
17
© Tait Electronics Limited September 2011
1.4
Frequency Bands and Sub-bands
The first release of the
base station
operates only on K band. Later releases
will support operation on other frequency bands.
1.5
Applications
The TB9400 is designed for operation in a TaitNet P25 trunked radio
network. It can operate as a single base station or as part of a channel group
or simulcast channel group, and as a traffic channel or control channel.
network. It can operate as a single base station or as part of a channel group
or simulcast channel group, and as a traffic channel or control channel.
In a trunked simulcast network, the transmitters in the channel group are
synchronized and transmit simultaneously on the same frequency. Each
transmitter needs a highly accurate 1 PPS pulse and an external frequency
reference, so that it can time transmissions with the required accuracy. We
also recommend using an NTP server at each site, as this will ensure a
common timestamp in logs across all units in the system.
synchronized and transmit simultaneously on the same frequency. Each
transmitter needs a highly accurate 1 PPS pulse and an external frequency
reference, so that it can time transmissions with the required accuracy. We
also recommend using an NTP server at each site, as this will ensure a
common timestamp in logs across all units in the system.
For more information, refer to the TaitNet P25 System Manual.
Frequency
Identification
Identification
Frequency Band and Sub-band
K band
K4 = 762 MHz to 870 MHz
a
a. The actual frequency coverage in this band is:
Transmit: 762 MHz to 776 MHz, and 850 MHz to 870 MHz
Receive: 792 MHz to 824 MHz