J-340MT/MST 10-40 WATT FM EXCITER/TRANSMITTER
 

DESCRIPTION

    The J-340MT/MST  meets or exceeds all past and present application FCC part 74 requirements. This unit has been TYPE ACCEPTED for 10-40 watts and is approved to drive higher powered amplifiers (see J3250 or J3100). The new, tighter FCC frequency tolerance of +/-2000 Hz is easily met by this unit.
    The J-340MST includes a stereo generator with optional audio filtering and processing. The J-340MT is used for mono or with an external stereo generator. 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 TC-2W under accessories). The J-340MT/MST can be used for "SATALATOR" service, i.e.. mono, stereo, or composite audio input; or as a low power FM station or backup..
    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.
 

SPECIFICATIONS

Frequency	Any frequency from 88 to 108 MHz
Type of Emission	180F3
Rated Output Power	10 to 40 watts
Power Output Regulation	Within 1% for any change In signal Input level or AC line variation of 10%
RF Output Impedance. UHF connector standard (other connectors available)	50 or 75 Ohms
Harmonics	-80db or better
Spurious Output (600 kHz removed)	-80db or better
FM Signal To Noise Ratio	-70db or better
AM Noise (Referred to carrier) Ratio	-65db or better
Modulator Audio Specifications	see FM modulator
Stereo Generator Specifications	see FM-6 stereo generator

 

OTHER

Overall Frequency Stability	+/-1800 Hz from -30 to +50 deg C
Intermediate Frequency	10.7 MHz
Power Requirements: For 40 Watts RF	AC: lOOVA at 120VAC (rms)  DC: 2.8 Amps at 28 Volts
Optional Audio Modulator	As per 74.123
Dimensions	19" by 13" x 3 1/2"
Weight	25 lbs (Approx. 30 lbs. shipping)