Repeaters on the Link System UNDER CONSTRUCTION
West Raleigh, NC
K4JDR Linking Repeater
VXR 5000U Vertex
|The K4JDR Backbone Hub Repeater consists of a commercial Vertex VXR 5000 with a Pacific Research, RI-310 Controller v2.11 including a 120 minute DVR, and AD-3 audio delay board @ 62.5ms delay. The Repeater is presently Running a Henry UHF Amplifier at 85 Watts out of the duplexer with .10 watts reflected ( 1 : 1 ) VSWR. The antenna at 320 Feet AGL. The site is 468 Feet ASL.
|Polyphaser IS-50NX Surge ArrestorEAR #5120 Weather Radio (SAME)
Decibel, DB4001-1 band pass filter cavity for 162.450mhz
Home Brew WX interface and modifications
Home Brew, 90 sec. WX Broadcast Circuit
Home Brew, Wx Radio, Reset Circuit
Home Brew, VHF 1/4 wave Weather Radio Antenna
Home Brew, Notch, 1/2 wave stub filter.
6 Ft. 19 inch Repeater Rack Assembly
|Communications Building at the 441.725 Hub and 444.675 site in Raleigh
A look into the Building, the 725 Hub and 675 is on the left at the end.
|A shot of the 360 ft. Tower
Rob Noble, a Cary Firefighter and tower rigger for Nav-Com Communications, climbing the Raleigh Hub repeater tower inspecting cables and removing a UHF link antenna.
If you are interested in my field notes which contain many schematics and information on the equipment and addition items I had to build, please click Field Notes here or on the side bar and visit our Yahoo site for schematics. The notes are in a PDF or jpeg format so you will need Adobe Acrobat Reader available at Adobe's web site.
Old Clayton 444.150 site installing a 6 Element Link antenna to point at Raleigh Hub. This tower was taken down in 2015 by a dump truck dumping and driving into the guy wires. This was a great site, we miss it.
Battery Backup System at Raleigh Hub.
EZ-Gate 80 Switching Module
Battery Backup autodialer
EZ Gate 80 Charging and switching module with a PowerWerx LVD-35 Low
Voltage disconnect set at 11.8 Volts.
Coats 444.550 + 100 PL Repeater site.
Chris, KG4GRB took photos at Coats site back in 2005 towards Barclaysville.
Base of antenna at Coats site
Wendell 444.875+ 100 PL repeater site
AirCrane Performing Tower Work at Wendell Site
More photos and organization coming as time permits.