AKG SR4000

The SR 4000 UHF receiver is one standard EIA rack unit high and one-half rack unit wide with a full metal chassis. Thus, two receivers can be placed side-by-side in one rack space (rack-mount hardware included). The SR 4000 has a 30 MHz wide UHF band containing presets with intermodulation-free frequencies as well as a tuning mode with access to up to 1,200 switchable frequencies. The SR 4000 operates as a true diversity receiver, in which two completely separate antennae, receiver and demodulator sections are operational at all times.

The receiver includes a Pilot Tone Decoder Unit that decodes transmitter data out of the Pilot Tone’s data stream. This enables the SR 4000 to show battery charge status and mute status of the transmitter on the integrated, back-lit color display. This data is also available at the Logic Output Connector on the rear panel. The HT4000 & PT4000´s Pilot Tone allows automatic muting of the SR´s audio output in case of invalid or corrupted signal (Tone Code Squelch TCSQ). If necessary this automatic squelch option can be overruled by a manual squelch setting. For PC control and monitoring of the SR unit a special data port is available on the rear panel of the SR 4000.

The True Diversity receiver concept offers maximum dynamic range, greater freedom from interference and noiseless switching from one receiver to the other. Both balanced 3-pin XLR and unbalanced 1/4-inch output connectors are available. An output level switch allows the adjustment of 3 output levels (-30, 0, +6 dB) for optimum system gain structure. Also available on the rear panel are a data port connector, a logic output, 2 x BNC antenna Connectors and a lockable DC input jack.

Controls on the SR 4000 include a backlit display and a Jog wheel to adjust various receiver settings such as squelch threshold, carrier frequency selection, user’s name, scan & rehearsal mode selection and many more. Indicators on the unit include mute, audio level bargraph, RF level bargraph, 6x14 segment alphanumeric display and menu control. A unique, programmable Status Control Ring shows the most important system data at one glance.

Each SR 4000 can accommodate a pair of diversity antennas; however, when a number of receivers are used in a single system, a master antenna pair (with or without antenna booster, directional and omnidirectional antennas) can be used to feed all receivers. A wide range of accessories such as an antenna splitter, antenna multi-coupler and antenna booster are available for operational flexibility and ease of installation.

The internal software of the SR 4000 offers a wide range of control features for an easy setup even in complex multichannel systems under difficult RF conditions. Most helpful are features like AutoSetup (automatic intermodulation free channel selection), EnvironmentScan (scanning of the unit’s RF range), and RehearsalMode (recording of important system data during rehearsal helps optimize the system setup). Important settings like frequency, squelch, unit name, etc. can be edited and stored via an easy menu structure. Even more control & monitoring features are available via the optional MCS 4000 (MissionControl Software) PC Control Software.