A Beyerdynamic NE900Q 4-channel UHF receiver for use with Beyerdynamic radio micophones. 
Frequencies - 841-865Mhz. 

IMPORTANT: I can only get 3 of the 4 channels to work.

Suppied without power cable or antennas.

Thanks for looking.

PRODUCT DESCRIPTION

The NE 900 true diversity receiver is offered as a single (NE 900 S), dual (NE 900 D) or quad channel receiver (NE 900 Q) in a metal enclosure with 99 pre-programmed UHF frequencies or 960 freely selectable frequencies per frequency range. Depending on environment and country regulations the system can be operated with up to 16 frequencies per frequency range simultaneously with no interference. The NE 900 D and NE 900 Q each also have an integrated antenna splitter.

On the front of the receiver is a headphone output with volume control for monitoring individual receiver channels. All other settings such as squelch, mute, locking function and username can be made via a central menu control (jog wheel). Every receiver has a colour LCD per channel displaying all important data including frequency, group, channel, username, RF and AF level as well as the currently remaining battery capacity of the transmitter unit. A locking function prevents the possibility of inadvertently changing the configuration during operation. The search for an interference-free frequency can be selected to be performed automatically by the scan function or manually. The balanced 3-pin XLR outputs (NE 900 S also has an unbalanced jack) and a remote connection (In/Out) that enables decentralised control of the receivers can be found on the back of the device.

Beyerdynamic NE-900-Q Features:

  • Professional 4-channel true diversity receiver (UHF)
  • 19"/1U metal housing with integrated rack mount ears incl. antenna cable for antenna front mounting
  • 99 pre-programmed resp. 960 free programmable frequencies (24 MHz / 25 kHz steps) per frequency range
  • Up to 16 interference-free channels per frequency range
  • AutoScan and ACT (Automatic Channel Targeting) function for automatic frequency setting, synchronisation of receiver and transmitter via infrared
  • Integrated 4-channel audio mixer and antenna splitter
  • PLL synthesised technology
  • Pilot tone recognition for improved operating reliability
  • Adjustable output level according to transmitter gain (0 dB, -10 dB, -20 dB, -30 dB)
  • Channel mute function
  • Adjustable squelch level
  • User-friendly adjustment of all parameters via menu control (jog-wheel)
  • Multicolour LC display with 11-stage bargraph indicator for AF- and RF-level, 5-stage battery status indicator, Diversity channel indication (A/B), Indication of frequency, group/channel, user name, squelch level, remote on/off
  • Monitoring/ headphone output with volume control and channel selector
  • Remote connection IN/OUT to interface further receivers and to control the system via PC-software (for IBM compatible PCs and notebooks)
  • TNC antenna sockets with power supply (+ 8 V) for remote antenna amplifiers
  • AF outputs: 3 pin XLR male (balanced) per channel