MRK980 User Manual
rev.01
4
TECHNICAL
DESCRIPTION
The
MRK980
is a professional dual diversity receiver for wireless microphone
reception especially designed for broadcast production, live stages, theatres and
top professional applications.
MRK980 key features are:
High immunity in a strong RF environment
Incredible switching bandwidth
Top class audio performances and flexibility thanks to the digital processors
High reliability and durability
One of the milestones in the design of the MRK980 is high reliability as most of
the circuit blocks in the receiver are completely independent from another.
Below you can see the schematic with an overview of main receiver functions.
Starting from the antenna inputs, each antenna can be independently powered
from a single power regulator monitored by the microcontroller.
For each antenna the RF signal is split to feed receiver 1 and 2 with a wide-band
splitter. This way any of the two receivers can be tuned to any frequency within
the tuning range, e.g. you can have receiver 1 in VHF and receiver 2 in DME
band.
Receiver 1 and 2 are true diversity receivers: each one consists of two receivers
tuned to 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.