SNB

 

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Introduction:

 The call sign used at this site is SNB. This system consists multiple transceivers operating four bands with two rack mounted power amplifiers. This site receives the link signal on 223.500 and retransmits that signal to 147.480 simplex, 444.450 duplex, and 053.450, which is part of the 6m split site repeater. A signal received on the 70 cm repeater on a frequency of 449.450 will be retransmitted on 444.450, 223.500, 147.480 and 053.450 simultaneously. A signal received on 147.480 will be retransmitted on 444.450, 223.500 and 053.450 simultaneously.

 

     The transmitter on the frequency of 147.480  is connected to a continuous duty rack mounted amplifier with an output level of 30 watts. The antenna is a two bay folded dipole fed with hardline. An Astron 50 amp power supply supplies DC power as well as trickle charging the battery bank.

   The transmitter on the frequency of 444.450 is connected to a continuous duty rack mounted amplifier with an output level of 40 watts. The amplifier is connected to a 350 watt rack mounted duplexer. The antenna is a four bay folded dipole fed with hardline. An Astron 50 amp power supply supplies DC power as well as trickle charging the battery bank.

  The transmitter on the frequency of 223.500 is connected directly to the antenna which is a three element yagi. An Astron 50 amp power supply supplies DC power as well as trickle charging the battery bank.

   The transmitter on the frequency of 053.450 is connected directly to the antenna which is  a folded dipole. An Astron 50 amp power supply supplies DC power as well as trickle charging the battery bank.

   The transmitter on the frequency of 144.390 is connected directly to the antenna which is a two bay folded dipole.

 

 

  This system operates from the public power grid as a primary means of electricity which supply two Astron 50 amp power supplies. Six golf cart batteries supply the back up power. The Aprs computer operates from an Inverter. During extended grid power failure the low voltage disconnects will shed the high current devices. Eight hour grid power failures are common at this site, the batteries easily handle this interruption.

 

 


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