The J-317 has been type accepted for use under the 1991 FCC rule changes and meets or exceeds all past and present applicable FCC part #74 requirements. RF output is now variable, determined by factors at the translator site. As a result, this unit has been TYPE ACCEPTED for 4-12 watts and is approved to drive higher powered amplifiers such as Tepco's 250 watt amplifier, model J3250. The new, tighter FCC frequency tolerance of +/-2000 Hz is easily met by this unit. Special improved ceramic IF filters address today's "busy" sites and are considered standard equipment.
    Two types of downconverters are available: A crystal controlled version for those sites where maximum sensitivity and immunity to interference is required and a snthesized version requiring no retuning for a receive frequency change.
    The J-317 is not a converted exciter or baseband unit, but is a dual heterodyne conversion FM translator. All modules employ optimized time proven circuits which have been used in Tepco models for many years.This unit utilizes a MOSFET front end, dual gate mixing, ceramic IF filter networks, two independent AGC loops, five stages of limiting, and positive muting action. The RF output is regulated for signal variation and line voltage changes. Additionally, the output power stage is protected in the event of serious load changes by a special power reduction circuit. For locally originated announcements, as per FCC requirements, an optional built-in audio exciter is available (see FMT-34 FM Modulator under accessories). A high quality demodulated output is built in for subabudible tone controls and monitoring. The J-317 can also be configured for "SATALATOR" service, i.e.. mono, stereo, or composite audio input.
    Modular construction permits ease of access to all components for service, test and part replacement. As much as possible; standard, high quality parts are used throughout. Replacement parts are available either directly from the Tepco Corporation, or through numerous part suppliers. All units are environmentally tested at the factory under operating conditions via a computer aided test program. A printout of this accurate, unbiased data is shipped with each unit for verification and future reference. The warranty covers all parts and workmanship for a period of one year.
    This translator model is ideal for solar powered sites due to it's low power consumption. DC option (28VDC) available upon request. A DC/DC converter is available: DC-40.
 

For more information, e-mail us at tepco@rapidnet.com.