6  Meters

2 - Meters 

145.430 repeater


146.850 repeater



900 Mhz


440.575 Mhz DMR repeater


D-STAR repeater




The  History of the 146.940 Repeater in East Tennessee

One of the most used Amateur Radio Repeaters in the entire East Tennessee region is the 146.940 machine, which is located high atop Bluff Mountain, just outside of Pigeon Forge.  It's footprint allows it to be accessed from Bristol to Chattanooga... 
and all parts in between. 
The history of this shared resource is also quite extensive... as it can be argued that the '94 machine is the oldest active repeater on the air in the region!

Here is a look back at the path this machine has taken over the years, to become one of the most-used repeaters in the area!

In the 1970's, the FCC licensed repeaters with their own unique callsign.  The 146.94 repeater held the callsign of  WR4ADF.

George W. Shaver, K4HXD, 
the founder and owner of 
the 146.94 repeater 
from 1967 until 1985

   The 146.94 and 444.300 repeater 
when they were in the Tennessee 
Forestry Building on Chilhowee 
Mountain, circa May 1973. 

 Just four scant months later, 
a Novice license was issued to: 

This photo is one of the first 444.300 repeater. 
The transmitter is using a 2C39 tube. 
The receiver and repeater coupler is to the right, 
and the transmitter is to the left. 
This is a sideways view, 
looking into the repeater cabinet. 


George Shaver was K4HXD, 
the founder of the 146.94 repeater. 
This picture of George & his lovely wife Cathy 
was taken at Bob Scott (WB4RJE)'s wedding. 
(Thanks to Bob for supplying many of the 146.940 repeater history photos!!)

This is a photo of George, K4HXD, 
tuning either the .94 or 444.3 repeater. 
This photo is dated May 1973


     This is a look down the mountain from the fire tower. The power line that served the mountaintop site is visible, as well as one of the old State of Tennessee Forestry line antennae




     This is a look from inside the State Forestry fire tower on Chilhowee Mountain. One of the VHF state of Tennessee forestry link antennae is visible, mounted on the outside of the fire tower. In the background is Maryville


     This view from the state Forestry Fire Tower is that of Bluff Mountain (Greentop), the present .94 site, at the peak of the far end of the mountain range

    This is a picture of the K4HXD (later licensed as WR4ADF) antenna system. The .94 antenna is at the top,  and one of the six meter repeater antennae is mounted on a side mount bracket. The 440 antennae are to each side, and another VHF antenna is below the top of the tower. Perhaps George had .94 on split antennae in its early days. 

     This a view of the forester's cabin atop the Chilhowee Mountain site. Unfortunately, this cabin was later destroyed by vandals. George (K4HXD)'s state issued station wagon is on site. Notice the sun peeking thru the trees!  It must have been late in the afternoon!! 


    Once upon a time, there were no such thing as readily programmable radios!! To use your local repeater, you had to order crystals for your favorite local repeaters. In this undated photo, an external "channelizer," made by GLB electronics, has been added to a Heathkit transceiver to allow it to be tuned to repeater frequencies. Note that the synthesizer is on 146.13/73, but the external display says 146.61. Interesting! And as a side note, there was no "scan" in those days..you monitored one repeater at a time! 
This is a photo of the 146.94 repeater 
on Chilhowee Mountain, with its 
"new" DTMF control decoder at the top of the cabinet. The decoder was designed and built by Bob Scott, WB4RJE, who has supplied many of the 94 history photos that you see.
This is a photo of the 444.300 repeater, 
as it was setting in George's basement. 

Note the large assortment of tubes 
on the shelf in the background! 

     This photo shows the second generation of the 146.94 repeater, which lived on a tower site on Chilhowee Mountain.  The site was owned by Communication Specialists, where George and Tim  worked together for several years. The receiver was a Motorola “Motrac” solid state receiver, and the transmitter was a Motorola tube type vintage transmitter. The duplexer on the side of the repeater is still in use today, as is the homebrew control panel in the center.

This is a close up photo of the second generation 146.94 repeater controller and ID. At the time of this photo, there were no manufacturers making ready built repeater controllers!! The control panel (top), contained "modules" for audio coupler, time-out timer, and delay timer (repeater hang time).  The controller is in use today! It has stood the test of time. The ID unit, built by Bob Scott, WB4RJE, was a lightning casualty in later years

     This is a photo of an RCA 829B tube, removed from the 146.94 transmitter. The arrow is pointing to the cause of failure with this tube...there is a HOLE in one of the  "plates" of the tube!! This tube was actually two tubes in one glass enclosure for higher power operation. It was melted open by the continuous duty use that an amateur radio repeater delivers every day! Now, most all PA units on repeaters are solid state. Aren't we glad? 

     This is a photo of the duplexer used on the 146.94 repeater in the seventies. It is still in use today. It has only had one failure since I acquired the repeater in 1985. 

     This is a photo of the tower where 444.300 lived until I acquired it from George around 1989. This tower has since fallen. Incidentally, I moved the 146.625 repeater off of this site in the summer of 2004. 
Here's a photo of David, K4DR, George, and Bob, W4ZTV.


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