Guides, Tech Tuesday

Tech Tuesday! – Wisycom MCR54

MCR54 Firmware

In our latest episode of Tech Tuesday, we take a look at the Wisycom MCR54!

For today’s blog we are going to go over some of the features of the MCR54, take a look at the compander modes and accessories available for use in conjunction with it. Then we’ll take a look at some helpful tips and frequently asked questions to help you get the most out of it.

Main Features:

  • Exceptionally compact and robust
  • DSP Analogue & Digital Audio Output (AES3)
  • Up to 790 MHz bandwidth in 470/1260 MHz range
  • Next Gen Multiband front-end filtering:
    • High Q electronically tunable filter in 470-798 MHz
    • 1st narrowband filter
    • 2nd narrowband filter
  •  Wide-band and Narrow-band DSP-FM operation (SW selectable):
    • Narrow-band allows double the spectrum efficiency
    • Narrow-band allows about 3dB extra sensitivity and noise immunity
    • Extreme low noise VCO with ultrafast spectrum scan for optimal quick & easy setup
  • Monitor & control through USB C or Bluetooth 5 (long-range) on Wisycom Manager 2.0 (computer SW)
  • Rear antenna connectors and micro audio and power adapter

Below are some notes on the Compander modes:

ENR WisyClassic Wisycom companderBackward compatible with all Wisy kit. Great for voice. Low noise.Will sound brittle with high HF audio content such as clanging cutlery or the famous key test
ENC WisyUpdated Wisycom compander with lowered pre-emphasisGreat with high HF content, transient dynamic sources, passes the key test.The lower pre-emphasis can lead to more noise pumping when using near range limits with low Receiver signal levels
SENSennheiser mode for HiDyn+ (3000/5000 series)Sounds great with Sennheiser Transmitters, also works well with Lectrosonics in ‘Mode 3’No battery telemetry with Lectro in Mode 3
SEN-d0Special Sennheiser HiDyn+ mode with 0 pre-emphasisWorks with special versions of Sennheiser 5000 kit with zero pre-emphasis
SRShure ‘Audio Reference’ companding for UHF-R series
EVOSennheiser HDX (Evolution Series)
FLATThis is a test mode with no companding and no de-emphasis

* Please note: If your transmitter is fitted with the Ultrasonic Filter option, (Code:UN) you will find that either ENR or ENC will sound clean with the “key test” as the ultrasonic sound from jangling keys, clanging pans and cutlery etc. will have the energy above 17kHz removed prior to the compander which will reduce the undesirable effects. the benefits of ENC on highly transient, dynamic sources such as percussive music will remain though. We would still recommend ENC for this type of audio source

Frequency bands: 

 The MCR54 has three banks (bands) of filter, Bank 1 is a tuneable filter with a 32MHz ‘window’ across the range 470 to 800MHz. Banks 2 and 3 are very tight ‘SAW’ filters and dependent on the exact model supplied and geographic area, for UK you get coverage of the new licensable ‘DME’ band. N.B. All receivers in the MCR54 must be tuned to frequencies in the same bank, and, if bank 1 is selected, then all channels must be within 32MHz of RX1 tuned channel. 

 MCR54-B1 (UK)MCR54-B2 (USA/EU)MCR54-B3(JP)
Filter Bank 1: 

470-800MHz Tuneable filter with 32 MHz of bandwidth 

Filter Bank 2: 961-1000MHz823-832MHz806-810 MHz
Filter Bank 3: 1045-1075MHz940-960 MHz1240-1260 MHz


Available Accessories:

BPA54Bag base MCR54 with 2 x TA5M audio/AES outputs and Hirose DC input
SLK54-IKSuperslot’ base for MCR54 with flange (25 way D type)
SLK54-SXSlot-in base for MCR54 with Sony camera with flange (15 way D type)
BCA54Battery adaptor for MCR54 including ‘bag’ interface – Coming Soon
MRK16Multi-slot RX tray for 4 x MCR54 – Coming Soon


Third Party Accessories:
Sound Devices SL2Dual SuperSlot Wireless Module for 8-Series and Scorpio SD mixers.Allows 8 channels AES audio from two MCR54s. Full control of MCR54 from mixer. RF distribution. Remote cotrol of compatible Wisycom antennas to allow remote tuning of filters and gain setting etc.
Sound Devices SL6Triple Superslot module for 688 and Scorpio mixers.Allows up to 12 channels from three MCR54s. RF Distribution.Only 2 channels per MCR54 are connected by Superslot. Remaining channels require cable connection from top socket. This is and older product, and MCR54 not officially supported in SL6 so data connection may give variable results.
Audio Ltd A10 RackRack for 4 x Superlot RXs RF distribution and AES/Dante outputOnly two audio channels per MCR54 will be connected to the outputs. Acess to the other two channels is from top sockets.
PSC Six PackRack for 3 x Superslot RX.12 audio channels using AES. RF Distribution.AES must be used for 12ch audio
Raycom Bias-TeeBias-Tee for powering active antennas

Helpful tips:

  • Each Receiver can be set independently to any compander and narrow-band or wide-band option.
  • Squelch Mode (SQ in the menu) can be set “normal” “long range” and “user”. User can be adjusted in the Manager software, the squelch on the MCR54 uses channel quality and noise to determine when to open the squelch and allow audio to pass. this means that if the noise floor changes in your location your squelch will change with it.
  • Aux (top) outputs can be selected to be any of the 4 channels.
  • Remember to turn off channels you aren’t using to save power (Active Receivers in Setup Menu).
  • In ‘Scan’ menu remember you can not only set threshold (sq.) level but also select if you want to scan channels or scan between frequency limits that you can set. You can also view the last scan from this menu.
  • If your MCR54 is loaded with the default frequency plan and you need to put a user frequency in quickly and you are in a locked group you can go to group 36 or higher which are unlocked and you can then freely enter a new frequency directly into a channel.
  • Always make sure the Transmitter and Receiver are set to the same compander and wide/narrow mode. A sync from Receiver to transmitter will also syncthis data.
  • When you first power up the display will briefly tell you the type of antenna needed for the frequency range that the Receiver is tuned to.
  • When you change a parameter in the menu, always remember to ‘save’ or it will revert to the previous setting.

Receiver 1 to 4 LEDs colour code:

  • OFF=Receiver off,
  • RED=Audio is squelched (muted) due to poor signal quality,
  • RED Blinking=This RX is tuned to a frequency >32MHz from RX1 so will not work,
  • GREEN=Squelch open, antenna A is active,
  • BLUE=Squelch open, antenna B is active.

For any more information, or if you have any questions, please feel free to email us:

Leave a Reply