Puget Sound RTTY Repeater Group
The 444.65 Mhz WA7HJR repeater is located on 3004 ft. East Tiger Mtn. near Issaquah, WA.(lat/lon 47-29-32N 121-57-21W) The building and antenna structure are owned by PSRRG, but the land for this site is leased from the State of Washington, Dept. of Natural Resources (DNR). Underground AC power is supplied by Puget Sound Energy.
The repeater consists of a GE Mastr II UHF station, Cresend Technologies 100 watt continuous duty PA, Sinclair Q-circuit pass-notch duplexer, two Tx-Rx Systems 10" Bandpass cavity filters, and a Sinclair dual stage isolator feeding a 10dbd gain Celwave Super Stationmaster antenna through Andrews 7/8" Heliax. The repeater receiver is equipped with a 17 db gain Lunar GaAsFET preamp and a Hall 4RV receiver voter board. The repeater is also equipped with an autopatch operating through an Internet phone line provided by Vonage.
In addition to the main receiver on East Tiger Mtn, we have a remote receiver located just North of downtown Seattle in the University District, one in the North end of Tacoma and another located on Gold Mtn. near Bremerton, WA. The voter board decides, within a fraction of a second, which receiver has the best signal to noise ratio then selects that particular receiver.
The repeater controller is an Advanced Computer Controls (ACC) RC-850 which uses an 80C85 microprocessor. The controller is equipped with a Computer Interface and custom audio mixer circuitry. We are currently running version 3.8 software.
The repeater was connected to the Evergreen Intertie, an interconnected group of amateur radio repeaters, on 5/28/88 and is also linked to the KB7CNN 1.2 Ghz. repeater which operates on 1292.2 Mhz. at the East Tiger Mtn site.
An Echolink connection was established in the summer of 2004 and has permitted linking of the repeater to other repeaters, links, or individual hams worldwide.
NoWYR, a wireless Internet provider, has generously allowed WA7HJR/R to connect to their high speed feed located in a building next to our site on E. Tiger. This gives the repeater the autopatch and the Echolink connections.