
System Overview
50
As part of our on going effort to respond to the individual needs of our customers,
SmarTrunk Systems has developed System Application Notes (SAN’s) to support specialized
systemconfigurations. SAN’s may be obtained from the SmarTrunk sales department, your
SmarTrunk Master Distributor or from our Internet website at
www.smartrunk.com
.
Cross-Connecting a SmarTrunk II Controller with a
Conventional Tone Panel
SAN’s #1002 and 1007 explain how to install a SmarTrunk controller in
parallel with a CTCSS repeater panel. This configuration allows both
conventional radios and SmarTrunk II radios to share the same
repeater and is ideal for migration purposes or for mixed systems.
Request SAN #1002 for the ST-852 controller or SAN #1007 for the ST-
853 controller.
When the SmarTrunk II controller and tone panel are cross-connected,
conventional users are blocked from the repeater when a SmarTrunk II
conversation is taking place. When a conventional conversation is
taking place, the SmarTrunk II users are blocked from that repeater and
will automatically scan to the next repeater when making a call. Please
note that this application requires ST-852 version 3.51 firmware or the
ST-853.
Adding a CTCSS Decoder to a SmarTrunk II Controller
Also available is information about the ST-910 CTCSS Option Kit,
which is used to support tone squelch operation during a standard
SmarTrunk II conversation. This option is useful in systems
susceptible to co-channel noise.
Normally, once a SmarTrunk II call has been initiated by a valid user,
the ST-853 controller switches the repeater to open carrier squelch
operator. This means the repeater will re-transmit any signal it receives
throughout the SmarTrunk II conversation. By installing the ST-910
CTCSS Option kit, the repeater will only re-transmit the signal if it has
the correct CTCSS tone, which can be programmed in the SmarTrunk II
subscriber radios.
The ST-910 CTCSS Option kit, which includes a tone board, can be
ordered through SmarTrunk distribution. In lieu of ordering the ST-910
kit addition, System Application Note #1001 may be used to install a
generic CTCSS tone board to support this same option. Please note
that the CTCSS option relies on the CTCSS features of the subscriber
radio. Since not all SmarTrunk II compatible radios support this
feature, please refer to the installation documents for more information.
Appendix B - SmarTrunk System Application Notes
Содержание SmarTrunk II
Страница 57: ...57 SmarTrunk Systems Inc...