dB PM 1000 User Manual
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Contents
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DB ELETTRONICA TELECOMUNICAZIONI S.p.A.PM 1000 – 1 kW FM Broadcasting Transmitter - U SER ’ S M ANUAL 4 /1011. PM1000 FM TRANSMITTER1.1 GENERAL DESCRIPTIONThe PM1000 is a complete FM broadcasting transmitter with continuously adjustable output power,0 to 1050W. Made with MOSFET technology, can be used as stand-alone complete transmitter oras driver for high power amplifiers.On the PM1000 the use of MOSFET allows:- Higher efficiency ( ≈ 85%);- High gain (high transconductance and low internal reactive capacitance);- High thermal stability (negative coefficient for drain current).The output frequency range is between 87.5 and 108 MHz. Frequency setting is made using internaldip switches or external selectors (/C option). The minimum frequency step is 10 kHz.The transmitter has high frequency stability, due to the use of the Digital Phase Locked Loopsystem and a very low drift reference quartz. |
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