145.2100 - 444.XXXX Oxford, Ohio
The Oxford site originally established around 1975 was on 145.3900 and 145.2100 was located on a tower across from Mercy Hospital on Mack Rd. in Fairfield.
The close proximity of the 1500 watt 145.1900 repeater was constantly causing interference with the 145.2100. In an agreement between FARA and BCVHFA and approved by OARC to swap frequencies, moving the 145.2100 to Oxford and 145.3900 to Fairfield where they are today.
The 145.2100 repeater was located on the Miami University Channel 14 TV tower for over 45 years and the equipment was inside Williams Hall just below the tower.
November 25, 2020 University officials issued orders for everyone that had equipment at this site to vacate as the tower was being dismantled.
The repeater was a Spectrum Communications 25 watt SCR1000 that served the club and the community well from this location for several years.
In 2004 the Spectrum was replaced by a Motorola MITREK 110 watt repeater built by N8TVU. The preamp in the receiver and 75+ watts more gave the machine a larger workable foot print in the area.
2015 the club purchased three Yaesu System Fusion 50 watt Multi mode repeaters to replace the aging repeaters we had in service.
The rack was donated by Miami University prior to them taking down the campus tower.
The VHF duplexers are bolted to the rack to the right side leaving enough room on the bottom left side for a battery backup system and charger.
The Butler County Amateur Radio Emergency Communications team has also purchased three of the Yaesu repeaters for a UHF network.
That is the duplexer and repeater (not on in the photo) awaiting frequency coordination.
About a year latter we got the eviction notice for Williams Hall and the CH 14 tower.
The rack and equipment was moved to a club members home close to campus and set back up to provide amateur communications in and around Oxford until a new permanent site could be obtained.
The new site just outside of Oxford! A brand new 70 foot self supporting tower was installed behind the building and a secured area inside was provided by the owner of the business.
A top the 70 foot tower are a Hustler G-7-144 cut for 145.2100 is on the right side and a Diamond F-718A is on the left side.
Just below the cross arms there is a weather proof box containing a 144-440 diplexer that combines both antennas into one 7/8" Heliax air line.
The cable goes under ground from the tower to the building protected from lawn mowers and weed whips by PVC pipe.