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1.14.2012 rev. CCARC

2 METER REPEATER

  The repeater system consists of a G7-144N 7 dB gain collinear antenna at 260 feet up the tower. The whole system is 1100 ft. above sea level with 260 ft. of continuous Andrew Heliax hardline. The 144 duplexer is Wacom, a Vertex (Yaesu commercial line) repeater with 25 watts of power and an RC 1000V controller connected to a remote 440 receiver.
  The system is backed up with emergency power. The 85 repeater has been in operation for approximately 23 years and has been used in many emergency situations. We hope that this repeater can continue to provide outstanding service to our community in the finest tradition of Amateur Radio.

Our thanks go out to Bob Miller, N9RM, and his helpers.

Credit given to Dave Vest, N9KMG, for Photography.

6 METER  REPEATER

 

    In the summer of 2006, a new antenna for the six meter machine at Cardinal Hill, Ky. was put into operation.  The repeater had been working on a Diamond DPGH62  antenna mounted on the North facing leg.  This antenna would hold water which affected performance.  Also due to it’s design as a base station antenna and not for a repeater, the take off angle was too high. So the antenna was replaced with a Ringo Ranger that I had on hand. Also I rebuilt the repeater.

    The new repeater is made up of two Motorola Mitrex 6 meter mobiles coupled together via a CAT-200 controller.  This made big improvements to the overall operation and control of the repeater.  Power output was increased to 50 watts.

   I have been happy with the “sound” of the repeater but the range has not been what I had hoped for. To improve the range we will need to find a better antenna.

System specs;

    TX frequency = 53.43 MHz.

    RX frequency = 52.43 MHz.

   Tone = 167.9 Hz.

    Tx power input to the duplexer = 50 watts.

    Duplexers are Wacom WP-604.

    Approx 275 feet of 7/8 inch Andrews hardline installed.

    Antenna is a Ringo Ranger, gain = 0 dBd

    This gives system's ERP approx. 35 watts.

    The site has a height above mean sea level (HAMSL) of 649 feet.  And the antenna is 200 feet up the tower.

    Given the local terrain, antenna height above average terrain (HAAT) = 322 feet.

    Location is: 38:08:46.00 degrees Latitude and 85:48:29.73 degrees Longitude, which is on the Louisville water company grounds by St. Andrews Church Road and Dixie Highway, nearby DOSS High School, in Louisville, Ky.

    Estimated range for mobile (25 watts @ 0db gain) = 20 miles.

    Estimated range for base (35 watts @ 0 db gain) = 30 miles.

   

2011 Update provided by: Lou Kruizinga, N7BBW

The new 6 meter 50 watts repeater