53.15 Repeater

2 - Meters

145.430 repeater

146.850 repeater




900 Mhz



D-STAR repeater

DMR 440.575 Mhz DMR repeater


ON THE AIR, but further work to be done.  

On Sunday, November 4th, 2019, the 53.15 WB4GBI repeater was returned to service. However, the repeater is experiencing some intermittent noise issues. It has been determined that the best course of action is to operate the repeater with separate transmit and receive antennae. The second antenna installation will happen as soon as possible. The repeater may require a 118.8 Hz tone at this time.    73 de Tim WB4GBI

 six meter antenna  

The 53.15 repeater antenna                                             The 53.15 repeater 


The front view of the 53.15 repeater. The remote            A view of the duplexer, behind the repeater cabinet.
control equipment is between the power supply on            The 53.15 repeater cabinet sets atop another 
the bottom, and the repeater itself at the top.                    repeater in commercial service.

Here is a photo of the 6 meter duplexer. Yes, it IS that tall!
6 meter duplexer

The WB4GBI 53.15 repeater was originally installed at its present site on Wednesday, May 15, 2013. It was re-commissioned by Tim Montgomery (N4TLM) and WB4GBI. 

The repeater itself has recently been completely rebuilt. It is a GE MASTR II with the GE factory-made internal control shelf. The ID is a RACOM unit which came from commercial service. At present it is ID'ing every 10 minutes, in a "beacon" style of operation.  This repeater replaced the Motorola Micor repeater that Sam Kirby, WB4HAP(SK), commissioned in the 1980's. The Antenna (above, top left photo) is a Sinclair single-bay side mounted "trombone" antenna which is mounted right under 146.625's antenna at 120 feet on the tower.  It is fed with new Andrew 1/2" heliax. The repeater is operating at 80 watts duplex power.  We hope to hear you on 53.15 soon! 

A HUGE  "Thank you" to Tim, N4TLM, for his work on installing the 53.15 repeater antenna on the tower!


The 53.15 repeater site now has full emergency power! As of July 2017, a new 8 KW generator with a 250 gallon propane tank has been installed at the repeater site and is fully operational! Based on fuel capacity and consumption, there is enough fuel to completely power the site for several days. This insures the repeaters will be available for users and emcomm/auxcomm groups throughout any event that is needed. Equipment has also been installed to notify in the event of a power failure.  

73 de Tim WB4GBI 

Repeater statistics: 

Location: "Top-of-the-World," Blount County, TN 

(same location as 146.625)

Repeater: GE MASTR II 100 watt "low band" station

Antenna: Sinclair SRL-110A fed by 1/2" heliax

Wacom Products WP-609 four-cavity duplexer

Remote control: Motorola "Maxtrac" receiver 

Broadcast Tools DTMF control decoder 

Ground elevation 2450 ft HAMSL 

Height above average terrain (HAAT): 961 feet

Optional CTCSS tone: 118.8 Hz