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Home/Wireless Microphone Systems/Studio & OB-van Receivers/MRK980

MRK980

Two Channels Ultrawide band receiver
  • Description
  • Technical Data
  • Downloads
  • FW Releases
  • Accessories

Wisycom MRK980 is a true diversity, ultra-wideband dual channel receiver. With its 1090MHz of band switching, it ensures the users an exceptional band flexibility, combined with a superb selectivity and intermodulation immunity, for best operating performances of the wireless microphone systems. MRK980 also features an internal DSP processor, Wisycom famous Multicompanding system, new Dante compatibility and a completely and renewed user interface, which make this system easy and quick to setup.

FEATURES

  • Two channels true diversity receiver (full DSP processing)
  • Up to 1090 MHz bandwidth in 170/1260 MHz range
  • Push to talk (PTT) enabled with dedicated outputs (optional)
  • Analogue, AES/EBU & Dante outputs (with redundancy)
  • Dante machine Synchronized mode: no sample rate delay!
  • Next Gen Multiband front-end filtering:
    • High Q moving filter in 170-230 MHz
    • High Q moving filter in 470-800 MHz
    • High Q moving filter in 960-1160 MHz (DME) (or 806-810 MHz saw filter – Japan)
    • Country specific saw filters:
      USA 940-960 MHz or Japan 1240-1260 MHz
  • Wideband and Narrowband DSP-FM operation (SW selectable):
    • Narrowband allows 50% more band efficiency (200/250 kHz channel density)
    • Narrowband allows about 3dB extra sensitivity and noise immunity
  • Extreme low noise VCO with ultrafast spectrum scan for optimal quick & easy setup
  • High contrast OLED display
  • Monitor & control through USB and Wisycom Manager 2.0 (computer SW)
  • Expansion slot for GPIO or future additional feature
Download
Frequency ranges170 ÷ 230MHz (VHF) and 470 ÷ 800MHz and
960 ÷ 1160 MHz (DME) or 806 ÷ 810 MHz (JP) or 940 ÷ 960 MHz (USA) or 1240 ÷ 1260 MHz (JP)
Switchable channels2400 managed in 40 groups ofr 60 frequencies completely user customizable
Switching-window up to 1090 MHz
Frequencies microprocessor controlled PLL frequency synthesizer circuit, with 5 KHz minimum step;
frequencies are easily PC reprogrammed with Wisycom Manager thru Ethernet
Frequency error< ± 2.5 ppm, within the rated temperature range
Diversity techniquetrue-diversity (Twin receiver circuits)
Modulation FM mono, wideband or narrowband (SW selectable)
Peak deviation±40 kHz (narrowband), ±56 kHz (wideband), ±80 kHz MAX
“A” / “B” antenna inputs2 x BNC type female connectors for inputs, 2 x BNC type female connectors for loop
Antenna input impedance50 ohm (SWR < 1:2)
Antenna booster powering+12Vcc / 300mA MAX
SensitivityNormal Mode:
Wideband 2 dBμV / Narrowband -0,3 dBμV
High Sensitivity Mode:
Wideband 1 dBμV / Narrowband -1,3 dBμV
Amplitude response< 0.2 dB (for RF input signal: +4 dBµV ÷ +120 dBµV)
Co-channel rejection> -3.5 dB @ 2 µV RF; > -1.5 dB @ 100 µV RF
Adjacent chan. selectivity> 90 dB @ ± 300 KHz (wideband), > 90 dB @ ± 150 KHz (narrowband),
Spurious rec. rejection> 90 dB
IF image rejection> 110 dB
IIP3>= +20 dBm (typical)
Spurious emissions< 1pW (typical. = 0.1 pW)
Noise Reduction system compander circuit, can be pre-set (or switched off) to the following modes:
- ENR (Wisycom Extended-NR) noise optimized
- ENC (Wisycom Extended-NC) voice optimized & with reduced pre-emphasys
- CUSTOM (to be compatible with other brands transmitters)
AF bandwidth20 Hz ÷ 20 kHz (wideband), 20 Hz ÷ 15 kHz (narrowband)
Frequency response± 0.5 dB in the 20 Hz ÷ 19 kHz range (wideband),
± 0.5 dB in the 20 Hz ÷ 13 kHz (narrowband)
Distortion0,08% typ. (nominal deviation @1kHz)
SND/D ratio (Analogue)115 dBA typ.(analog),
SND/D ratio (Digital)>130 dBA (AES3/Dante)
Audio output2 XLR-3M connectors + 2 TRS for audio line-outpus trafo balanced (MAIN OUTs with transformer)
2 XLR-3M connectors for audio outpus balanced transformer-like floating (AUX OUTs used for PTT)
Audio output level +24 dBu @ peak deviation for MAIN and AUX outputs
+14dBu @ peak deviation for TRS outputs
Calibrating AF tonetone/sweep, up to +24 dBu (on MAIN and/or AUX outputs)
Digital outputAES3: XLR-3M with word clock in/out
Dante: 2 x Ethernet 10/100/1000 Base TX RJ45
Digital sample rateAES3 @ 48 kHz 24 bit, word clock input from 32KHz to 108KHz
Monitor output1/4” (6.3 mm) stereo jack connector
Monitor output levelmax 6 Vrms / 150 ohm
Monitor out impedance100 ohm for auricle
Managing interface2 x 10/100/1000 Base TX RJ45 Ethernet, Infrared, Bluetooth
Bar-graph metersRF Level Bars: RF field strengths (both “A” and “B” inputs) from 10 to 70 dBμV or LQ (link quality)
AF Bars: deviation (5% ÷ 150%), with peak-hold mode.
Display64 x 256 OLED (yellow)
PoweringAC 99 ÷ 138 Vac and 187 ÷ 264 Vac, with automatic switching / 100 VA max.
DC options6A max @ 10÷28VDC (optional)
Temperature range-10 ÷ + 55 °C
Dimensions19”/1U
Weight4 Kg approx.
*RMS value, A-weighted, 22 Hz / 22 KHz
    • Brochure

      MRK980-en-b07

    • User Manual

      MRKxx-en-u01-EXP3 installation

      MRK980_en-u08-A4

    • Drawing

      MRK980_dimensions

      MRK980-drawing

    • Manager

      Wisycom Manager v3.3.0 installer – released 20.06.2022

    • Firmware

      MRK980 v2.9.0 – released 21.12.2022

      MRK980 v2.8.0 – released 06.10.2022

      MRK980_v2.7 – released 21.06.2022

      MRK980_v2.6 – released 21.03.2022

      MRK980_v2.1

      MRK980: version 1.14 released 20.03.2020

      MRK980: version 1.11 released 21.11.2019

      MRK980: version 1.7 released 22.03.2019

Version:  v2.9.0

Date:  20202-12-21

MRK980

  • JNS compander enabled on any MRK980 (for Japan)
  • Adjusted frequency diversity control in relation with Noise Squelch ratio
  • Fixed zoning compatibility with frequency diversity control
  • Minor bug fix
Firmware

Version:  v2.8.0

Date:  2022-10-06

MRK980

  • added Frequency Diversity function on the AUDIO menu.
  • added Q5X compander
  • added compatibility with new RF board (UHF option, no VHF).
  • fixed bug of High/Low Optical Level alarm with EXP2 / EXP3
Firmware

Version:  v2.7

Date:  2022.06.21

MRK980

  • Updated main board compatibility (Minor HW updates, HW vers. >=20)
  • Added expansion board EXP3 compatibility (RF over fibre).
  • Added optional SFP module compatibility.
  • Added GP/IO activation in PTT mode.
  • Fixed minor graphic bug.
  • Anticipated exit SCAN function.
  • MRK980 display and Manager graphic alignment (manager version >=3.3.0).
Firmware

Version:  v2.6

Date:  2022-03-21

MRK980

  • Added sync with RPU500.
  • Added Ember+ enable.
  • Added Zoning enable.
  • Added EXP2 management.
  • Improved ENS compander.
  • Improved deviation bar (according to VU meter standard).
  • Improved decoding of extended battery data (16bit).
  • Improved Ethernet communication.
  • Implemented “Test Service” function.
  • Modified “LQ_EXP” bar when low level.
  • Fixed minor bug fix.
Firmware

Version:  v2.1

Date:  2020-12-23

MRK980

Added: Managed 16-bit TX battery and levels
Changed: WBAT decoder: new battery type management to allow the user to specify WBAT8, WBAT16 or WBAT_AUTO
Changed: Report management when a mismatch of the compander bandwidth and / or modulation with TX is detected
Changed: In channel setup page, when ENTER is pressed in active edit mode, all current values ​​are stored in the memory
Changed: Removed Channel quality diversity mode
Added: link margin and noise calculation during remote scan
Added: calculation of channel margin and channel noise parameters
Added: service test module
Changed: Managed IrDA bridge mode
Changed: Added the Low Pass Filter at 17kHz with short delayFixed: Motherboard monitoring ADC alarms set to non-critical level
Fixed: Motherboard monitoring Retry ADC reading in case of error (3 attempts)
Fixed: Optimization of Compander response
Fixed: Optimization of ETH communication

Firmware

Version:  v1.14

Date:  2020-03-20

MRK980

  • Added ENS compander: enabled as default after the firmware upgrade)
  • Added support for multiple sub-carriers detection
  • Added information about sub-carriers detection on the MAIN page
  • Fixed bug of wrong indication of RSSI led bar with high RF signals
Firmware

Version:  v1.12

Date:  2020-01-29

MRK980

  • On restore factory settings action popup is shown on both displays
  • Removed external monitor attivation shortcut from panel
  • Diversity leds are updated according to squelch control
  • Added local SCAN function
  • Added config popup on tuning channel in local SCAN
  • Added during the SYNC the possibility to align compander and/or the bandwidth modulation (NB/WB) between transmitter ad receiver
  • Minor bugs fixed
Firmware

Version:  v1.11

Date:  2019-11-21

MRK980

  • Added external audio monitor control from front panel
  • Added intermodulation squelch
  • Added remote control to save and load presets
  • Added remote commands to control EXP1 board
  • Added remote blink function
  • Bug fixed missing restore of tone squelch selection when RF squelch is edited and saved
  • Bug fixed sync group visualization on main page
  • Bug fixed problem on the TX battery data recovery when RSSI level is recovered after being too low
Firmware

Version:  v1.7

Date:  2019-03-22

MRK980

  • Added booster overload and short circuit alarms
  • added ethernet communication message
  • fixed DSP value
  • fixed bug on tone squelch mode selection
Firmware
  • EXP3

  • EXP2

  • EXP1

Categories: Studio & OB-van Receivers, Wireless Microphone Systems, Wireless Reportage Systems Tags: AES3, dante, double channels, narrowband, ptt, true-diversity, wideband

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