SR-64C

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SR-64C Point-to-Multipoint Radiotelephone Link

The TelePoint SR-64C is a UHF/VHF radiotelephone system with multi-user and multi-channel capabilities. It is used to provide high-quality voice, fax, and data communications in situations where physical cabling isn’t economical or isn’t practical. These include rural or remote areas, offshore platforms, and where users operate mobile and portable radios. The SR-64C can be used to implement wireless PBX, wireless local loop, or radio trunking systems.

A basic SR-64C system consists of a Base station and up to 790 field units. The system can have from 1 to 16 channels, with the number of channels determining how many simultaneous calls the system can support. For each channel, a CO line or PBX extension is typically connected to the Base.

A field unit may be either an SR-64C subscriber unit (to which a telephone, fax machine, or modem may connect), or a mobile or portable radio. Any of these may be used to make or receive phone calls through the system.

Typical calls made through an SR-64C system include incoming (outside parties to field users), outgoing (field users to outside parties), and between field units.

STANDARD FEATURES

  • Range up to 60 miles (100 kilometers).
  • Nearly any RF frequencies may be chosen in the standard bands of 136-174, 400-430, or 450-490MHz. Frequencies in many other bands are also available.
  • Transmit power up to 50W for VHF and 40W for UHF.
  • Channel spacing is 25kHz (standard) or 12.5kHz (optional).
  • Dial-up internet connection speeds of 19.2kbps can normally be obtained.
  • Fax: rates to 14.4kbps
  • Subaudible tones (CTCSS) guard against activation by outside signals.
  • RF modules by Kenwood.
  • Excellent audio quality – compandors eliminate radio hiss.
  • Compatible with DTMF or pulse-dial exchanges.
  • Hookswitch flash is transmitted through system
  • Changes to most settings can be done with a standard telephone.
  • Calls to groups of field units are possible.
  • Calls to and from phones connected directly to Base station are possible.
  • Busy signal is heard by incoming callers when a busy field unit is called and by outgoing callers if all channels are busy.
  • Callback ring signals a subscriber that a channel is now available if they previously attempted a call with all channels busy.
  • Incoming lines may be 2 or 4-wire E&M as well as ordinary loop-start (POTS).

AVAILABLE CONFIGURATIONS

  • Voice privacy scramblers
  • Ability to work with DID lines
  • Ability to easily select among multiple pre-programmed frequencies of your choice
  • Polarity-reversal for pay-phone operation
  • Subscriber Pulse Metering (SPM) for pay-phone operation
  • Repeaters

AVAILABLE OPTIONS

  • Power supplies: 115 or 230VAC, 50 or 60Hz, switchable
  • Uninterruptible (battery-backed) power supplies
  • Solar power
  • Yagi (directional) antennas for Subscriber units (any required gain)
  • Omnidirectional antennas for Base station and mobile radios
  • Antenna cables with connectors (any required length)
  • Lightning and surge protectors for antenna and phone lines
  • TX combiner and RX multicoupler to allow antenna sharing for all channels at Base
  • PC-based programming software enables changes to frequency and transmit power

AVAILABLE ACCESSORIES

  • Power supplies: 115 or 230VAC, 50 or 60Hz, switchable
  • Uninterruptible (battery-backed) power supplies
  • Solar power
  • Yagi (directional) antennas for Subscriber units (any required gain)
  • Omnidirectional antennas for Base station and mobile radios
  • Antenna cables with connectors (any required length)
  • Lightning and surge protectors for antenna and phone lines
  • TX combiner and RX multicoupler to allow antenna sharing for all channels at Base
  • PC-based programming software enables changes to frequency and transmit power