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MRK960
dual true diversity receiver
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Software to monitor/setup units and with spectrum field analysis
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Ethernet 10/100 base Tx network interface for configuration/monitor
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Digital audio interfaces: AES/EBU (with word-clock in/out)
Optional:
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Ethersound
®
interface
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Push to Talk (PTT) function with audio exit and GPI signals (patented)
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Very low impedance transformer outputs
Technical description
The MRK960 is a professional dual diversity receiver for wireless microphones reception especially designed
for broadcast production, live stages, theatres and top professional applications.
It’s winning performances are:
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High immunity on strong rf environment
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Huge switching bandwidth
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High audio performances and flexibility thanks to the digital processors
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High reliability and durability
One of the milestones in the design of the MRK960 is high reliability: most of the circuitry of the receiver is
independent one from each other.
Here below a schematic with an overview of main receiver functions.
Starting from the antenna inputs, each antenna could be indipendently powered from a single power regula
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tor monitored from the microcontroller.
For each antenna the RF signal is splitted in the receiver 1 and in the receiver 2 (antenna A and antenna B)
with a wide band splitter. In this way any one receiver could be tuned in any frequency of the switching range
(370 MHz).
Receiver 1 and 2 are true diversity receivers: each one is made of two receivers tuned on the same frequency,
hereafter called section A and section B. The receiver 1 section A and the receiver 2 section A are connected
to the antenna A, the receiver 1 section B and the receiver 2 section B are connected at the antenna B.
Each receiver has its own demodulated signal and its own RSSI signal (Receiver Signal Strenght Indication); a
microcontroller select or combine signals from section A & B to have the best audio. The demodulated signal
flows to the digital audio processor.