ME4T-PRO3 30W  4m transverter 








  • Frequency Coverage: 69.9-70.5MHz  band.
  • IF in/out Frequency :   27.9-29.5MHz,
  • LO frq stability:  Low phase noise, 0.5ppm AXTAL TCXO's!

  • I/O Impedance : 50 Ohm unbalanced
  • Input Voltage : 13.8VDC, +-5%, polarity mismatch, 10A -40dB EMI filter.
  • Power Consumption: 0.55A  on RX, 5.7A on TX @30W out,
  • Size & Weight : WxDxH: 240x270x95mm, 1.7kg


  • RX front-end : <1dB NF,overall NF typ 0.9dB,OIP3 typ +24dBm ,IIP3 typ.+2dBm
  • RX RF mixer : SRA2-H by MCL.
  • RX overall gain : max.26dB (variable btn 12 to 26dB)
  • IF rejection : >80dB

    TCXO side noise -140dBm at 10KHz.
RX connector:  "N" type 4m common  TX/RX  ANT, or separate 4m RX "N" type connectors.
    BNC type IF connectors, 1X spare "N" AND 1x spare BNC connector.


  • Power Output: 30W, at continuous carrier.
  • IF power input: -20 to +37dBm (switchable built in  5W att)
  • SWR  on IF input : 1:1.1 max.
  • Emission modes : CW, SSB, FM, Digital
  • Harmonic Output Suppression: >60dB below rated output


   3.2" color display controlled by Arduino Mega

   FWD,REV,Watt, TX/RX ,Main voltage,Current,Temperature,fan speed displayed.

   Analog frontpage RF output PWR control  btn. 4-30W typ.

   >2.2 VSWR,overcurrent,high temp. faults displayed with autoreset function.
    + more features controlled by Arduino...


  • RA30H0608M Mitsubishi RF Power Module,

  • Built in ext. fan  speed controller  circuit

  •  Color LCD bargraph frontpage FWD , REV, current,TMP,Ut meter

  • SND jack for ext PAs (GND out when TX, open collector +50V/0.5A max)
    +12V out for ICOM radios.( to switch  it to transverter mode)

  • 9 pole Sub-D connector for external service.( PTTin,+13,8V on TX, 2nd SND out etc.)

  • ALC circuit

  • Built in 50mSec sequencer

  • Optional fan module (2pcs 50x50mm external fan).

  • IF input & output BNC connectors( single IF in, single IF out for IF transceiver.)

  • Common TX/RX or separate 4m RX connectors.

  • 20A type DC connectors

  • Optional IF RX, TX and PTT cables

  • Built in jumperable IF amplifier to low out level radios(IC7600,7610,FTDX5000 etc.)

  • Built in heatsink  temp. sensor
  • Operating environments:
    - temperature range: 0...+50 degs.Celsius;
    - humidity: up to 95% @ +35 degs.Celsius.



Mechanics & Electronics Inc.  1991-2023. All rights reserved