Columbia Emergency Repeater Association

The original KB4TOH (now KX4NC) repeater went on the air July 4th weekend, 1989, on a frequency of 145.110 MHz. The original repeater was a GE Mastr Pro, later upgraded to ICOM in August 1991. After years of upgrades and work we finally moved to our new location on the tower. On November 1, 2008, the repeater call was changed from KB4TOH to KX4NC to reflect CERA's ownership of the repeater system. The repeater trustee is James B Sherred/KD8BLQ.

The VHF and UHF repeaters and an APRS node are located at 1200 feet in a weatherproof enclosure on a platform on the WUND tower in Columbia.

Repeater coordinates are Lat 35°53'59" Lon -76°20'52"

VHF Repeater: Kenwood TKR 750

Second unit down

Transmit: 146.835 MHz

Antenna: Sinclair 210 @ 1150 feet fed with 75 feet of 7/8-inch hard line

ERP: 200W

Receive: 146.235 MHz

Antenna: Sinclair 210 @ 1280 feet fed with 95 feet of 7/8-inch hard line

Controller: Linkcom RLC3 located in ground shelter

Mobile Coverage: 60 to 80 miles, including Hatteras, New Bern, Farmville, Tarboro, Gates County, Elizabeth City, Currituck County, Southern Virginia and Dare County, Okrakoke .

UHF Repeater: Kenwood TKR 820

Third unit down

Freq: 443.300/ 448.300 MHz

Feed line: 15 feet of RG-214 from duplexer

Antenna: Andrew DB420

ERP: 80W

Controller: Same as VHF above

Mobile Coverage is about 65 miles and serves the same areas as the VHF repeater.

This photograph was taken by Greg N4QLD during a maintenance trip to the platform on the tower

VHF 100W Power Amplifier

Top Unit

Under UHF Rptr

UHF Diplexers

APRS

50A Astron Power Supply