Long Lines site: Barnett, MO

This former AT&T Long Lines microwave relay site near Barnett, Missouri, was a repeater along the Kansas City-Halifax microwave relay route. The route supported both telephone and television traffic between the mid-1960s and the 1990s.

According to the 1966 map, Barnett had two hops: one to Cole Camp (approximately 24 miles west) and the other to Brinktown (approximately 36 miles southeast). The 1979 map is slightly more confusing, since Versailles, Eldon and Jefferson City were added in the area. The map isn’t detailed enough to depict whether Barnett hopped to Eldon (most likely, due to close proximity) or Jefferson City. (The most likely case is Barnett hops to Eldon, which hops to Versailles.)

The 1979 map isn’t detailed enough to depict whether Barnett hops to Eldon (which in turn hops to Jefferson City, northeast, and Versailles, west-northwest.)

Adding to the confusion, Maprad.io list the site’s last hop to an unlikely fellow Long Lines site: Prairie Home, in Cooper County — approximately 31 miles north. This hop isn’t depicted in any maps I’ve seen, and suggests both Prairie Home and Barnett were active in the 2000s. The license mentioned in Maprad.io (license WLK708) was granted to AT&T Communications of the Southwest, Inc., effective Nov. 29, 2001, and canceled before its anticipated expiration of Feb. 1, 2010. The license states the hop operated at 6 GHz with a power of 79.2 watts EIRP.

The last known hop for Barnett — 31 miles north to Prairie Home.

On the site itself, Barnett is built around a hardened concrete structure, a familiar sight along this route. Next to the building is the tower, which is still populated with five KS-15676 horns (two on the top platform pointing west to Cole Camp, with the other two on top and the outrigger pointing southeast to Brinktown) and two Gabriel horns on top. It appears the Gabriel horns match perfectly with two Gabriel horns located on Prairie Home, which validates the Maprad.io license linked above. Much like Prairie Home, some of waveguide is still intact on the tower, but has been removed at the base of the tower to the building. (Some waveguides running up are completely missing altogether.)

Barnett is a unique site because I can discuss what’s inside the site, thanks to a YouTube video someone else posted where they enter the site before climbing the tower. (Note: I do not condone trespassing onto a site, and especially do not condone climbing any tower without the proper climbing gear and protection.) In the brief look inside the concrete structure, we see lots of equipment left behind: a General Motors diesel generator (a staple of these sites), empty racks with wiring, possible parts of the former TD-2 radios, the Lectrodryer filter for decontaminating pressurized air for the waveguides, among other things.

A tour of the former Barnett AT&T Long Lines site, including a look inside the building and atop the tower.

A sign on the door to the facility reveals its current owner: American Tower. The site is registered with FCC ASR #1005481. FCC records indicate it was constructed around February 1964 and reports the tower being roughly 78 meters (~256 feet) tall.

Photos: July 2022

C. Vance submitted these photos of Barnett in November 2022 after taking them on a trip in July 2022. He has listed these photos under the CC BY-NC-ND 4.0 Creative Commons license.

A somewhat distant look of the former AT&T Long Lines tower near Barnett, Missouri, from almost directly north. The two Gabriel cornucopia horns on top facing the camera (north) hop to Prairie Home and are much newer than the original KS-15676 horns down below. The horns facing right (west) hop to Cole Camp, and the horns facing left (southeast) hop to Brinktown. (Photo: C. Vance)
The tower seen from the northwest. (Photo: C. Vance)
A view of the tower from the west at the entrance to the site. The antennas facing the camera (west) hop to Cole Camp, and the antennas facing right (southeast) hop to Brinktown. The top-most Gabriel horns facing left (north) hop to Prairie Home and were added much later. (Photo: C. Vance)
The featureless northern wall of the former AT&T Long Lines microwave relay site near Barnett, Missouri. (Photo: C. Vance)
A notice on the door reveals the current owner of the site: American Tower. The site is registered with FCC ASR 1005481. (Photo: C. Vance)
The main door handle has been damaged, likely by trespassers trying to enter the building. (Photo: C. Vance)
The southern side of the concrete building. The infamous “blast shield” with generator air intake, with generator exhaust directly above, is seen. (Photo: C. Vance)
The small pipe seen in the upper left is a water outlet from the dryer that removes moisture from the pressurized air feeding the waveguides. The generator muffler and exhaust are seen on the right. Both are located above the “blast shield.” (Photo: C. Vance)
A heater used as a load for the large General Motors diesel generator located on the other side of the wall. The heaters (another on other side) are located in the “blast shield” with the generator air intake seen inside. (Photo: C. Vance)
The reverse of one of the generator load heaters, with the fan motor and blades visible. (Photo: C. Vance)
The southeastern edge of the concrete building, with the eastern edge of the “blast shield” visible with the generator load heater.
A diesel tank for the General Motors diesel generator is located adjacent to the tower. (Photo: C. Vance)
Guards built around where the waveguide would normally go, likely to protect the waveguides and coupling equipment from the elements and vandalism. (Photo: C. Vance)
Some large air intake scoops. (Photo: C. Vance)
The bottom waveguide rack. Waveguides have been removed at the base of the tower. (Photo: C. Vance)
One of the bases for the 300-foot self-supporting tower. Note the ground wire running from one of the anchoring bolts. (Photo: C. Vance)
The “well-secluded” outhouse for the Barnett site. (Photo: C. Vance)
The toilet found in the outhouse. (Photo: C. Vance)

Photos submitted Nov. 9, 2022, taken July 14, 2022.

Page published Nov. 11, 2022. Last updated: Nov. 20, 2022 (updated height of tower per FCC records, added Creative Commons notice.)