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Block Diagram of Entire System

The Delaware-Lehigh Amateur Radio Club owns and operates the W3OK repeater system. Our VHF HI BAND repeater frequency is 146.700 MHz our UHF frequency is 444.900 MHz and our LOW BAND 6mt is 51.760 MHz. All repeaters have a PL of 151.4 Hz. Carrier access may be obtained on 146.700 by utilizing “LiTZ” (Long Tone Zero) to temporarily disable the PL.

The repeaters are located on Levis Road in Nazareth Pennsylvania on the Northampton County 911 tower at a ground elevation of 570'. The tower is a 300', self-supporting type. Our antennas are fed with 7/8 inch hard-line and are mounted at the 200' level on the northwest leg of the tower for 146.700, northeast for the 444.900, and west for the 51.760 antenna. Both the 146.700 and 444.900 are station master antennas and a folded dipole loop for 6 mt..

The repeaters are controlled by a ACC RC-96 V5.2 controller and are in a linked configuration. Our system is equipped with an auto-patch and emergency 911 capability (if needed, call on the repeater and ask for assistance).

Our equipment on 2 Mt. is a GE Master II repeater with 120 watts output feeding a Phelps Dodge-497 6 cavity duplexer, which supplies 95 watts to a Station Master antenna . Our equipment on 70 Cm. is also a GE Master II repeater with 65 watts output feeding a Wacom WP-678 duplexer, which supplies 55 watts to the antenna. Our 6 Mt. repeater is also a GE Master II repeater with an output of 80 watts.

Our VHF system is equipped with 4 remote receive sites located throughout the Lehigh Valley. The remote receivers are located in Nazareth, Wind Gap on the Blue Mtn., Easton, Fountain Hill, and Fleetwood. On the 70 cm we are voting from Nazareth and Wind Gap. The receivers are Motorola Spectra-Tac radios that are linked to 2 six-channel GE Voting Modules located at the Nazareth site by fiber optic cable. All sites are equipped with emergency backup generators.

Note:

We are planning to add 2 more remote receivers for our UHF system and the addition of 2 remote receivers for 6 meter repeater located on Montana Mtn. in N.J. at 1250' and one will be on the West end of the Valley.

OUR W3OK 145.110 REPEATER link

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