Chief Engineer, Roger Domingues
Assist., Peter Hoegg

KOAC, AM 550

KOAC Radio has been on the air since the 1920's, and is one of the Northwest's
pioneer radio stations.  Originally located on the campus of Oregon Agricultural College,
now Oregon State University, KOAC is the "Flagship" of OPB.
KOAC Radio moved to it's present site, North of Corvallis, on part of the OSU
Experimental Farm in 1941, just prior to the US entry into WWII.
  Offices and studios are still located on the campus of OSU.
KOAC operates with a power of 5,000 watts.

KOAC, TV Channel 7

(Click on the picture below to zoom in.)

Vineyard Mountain, in the center of the picture above, is the location for KOAC - TV.
An unobstructed view of most of the Willamette Valley from just South
of Salem, to Eugene is available.

Test and terminal equipment                        Larcan solid state TV Transmitter

KOAC - TV operates with a transmitter power of 30,000 watts, and
an effective radiated power of 283 kW.

(Left) The "Business" end of the the Channel 7, TV transmitter, showing the
amplifier cabinets, combiners, and cooling fans.
(Right) The KOAC-TV transmitting tower.  The Channel 7 antenna is on top at
approximately the 200' level.
Construction of a new heavier tower is now underway to make the KOAC facilities
ready for Digital Television.  (See below)

(Left) Also located on our site is a smaller self supporting tower, that provides a structure for
microwave, communication, FM Translator, and LPTV users.
(Right) KOAC Assistant CE, Peter Hoegg, at the workbench repairing a
critical piece of equipment.

(Left) The KOAC-TV transmission tower as seen from the base of Vineyard Mountain.
(Right)  Located in the OSU Research Forest, part of the McDonald State Forest,
KOAC has many occasional friendly visitors to the site.
 

Not all days at the KOAC-TV Transmitter site on Vineyard Mountain are sunny!
On this day, it was cold, wet, and foggy.
(Left)  The KOAC-TV Transmitter building shrouded in fog.
(Right)  The main transmission tower, disappearing into the clouds.

View pictures of KOAC Tower construction