Repeaters and Beacons

 repeater700

VHF Repeater "700" is a Tait repeater consisting of the following hardware and controlled features:

  • Receiver T355 on 146.400MHz with an 85MHz CTCSS tone.
  • Transmitter T356 on 147.000MHz, 25 Watts.
  • Duplexer Wacom WP-639.
  • 2 stacked dipoles.
  • Coax cable LMR-400.
  • WVHFG 1802-design microprocessor controlled functions.
  • Synthesised voice announcer.
  • Mains powered with battery backup.
  • Auto power reduces to 5 watts when mains fail.

Alarms:

  • "Pippippip" every 15 seconds means that the repeater has a serious fault and that the transmitter has automatically switched to low power.
  • "Minus power on" on the tail means that the main power has failed and the repeater is running on battery power. The transmitter has also been switched to low power.
  • "Beep" on the tail means that the repeater has had a mains power on reset.

VHF repeater 700 antenna

 


 

repeater8425

UHF Repeater "8425" is a Tait T-196 repeater consisting of the following hardware and controlled features:

  • Receiver T-196 on 433.425MHz.
  • Transmitter T-196 on 438.425MHz, 1 Watt.
  • MRF660 6.5 Watt power amplifier.
  • Duplexer Deltec MD-460 1.5dB insertion loss.
  • Antenna Diamond X-50 6dBD Omni.
  • Coax RG-213/LMR-400.
  • Microprocessor controlled via DTMF "Touch Tone".
  • Mains powered with battery backup.
  • Trustee controlled mute, battery exerciser and shutdown.
  • Public tail extender and signal strength indicator.

DTMF Tones for public use:

  • *12# = Extended tail for tuning purposes.
  • *1234# = Tone output indicates signal strength.

Low frequency tone is strong signal at repeater.

High frequency tone is a weak signal at repeater.

Alarm:

Two Tone alarm for mains fail and has a power fail lock out if no battery is fitted.

 


 

SHF Beacon 12cm:

  • DownEast Microwave WSS2401, 5mW(+7dBm) transmitter.
  • Antenna is a horizontal polarised dual quad of 11dBD gain and +/-3dB beamwidth of 70degrees.
  • Coax cable is LMR-400.
  • Digital Morse code FM Keyer is a ZL1QF design.
  • ERP is approx. 30-40 milliwatts.
  • Mains powered with no battery backup.
  • No alarms or control.