download  METROPWR FX775, is a modern VECTOR POWER/SWR METER completely digital. It’s composed of a wattmeter and a power coupler for measurements up to 3/5kW. It has a very modern design, and very high performance. It has inside a fast 32bit processor plus a coprocessor to handle all the measurements in real time, and measure Power (AVG, PeP, dBm) , SWR, R, Z, X, and more. It has a fast external bus with which you can connect many accessories in series:

  • Antenna switch 1X4 positions FX7
  • Radio switch 1X4 positions FX7
  • Directional coupler 3/5kW FX3/FX5

In the photo some examples of connecting some accessories. Metropwr Fx773/FX775 can handle 4 antennas and 4 radio simultaneously. Through a menu it is possible to cross each radio with each antenna. 

In the picture the block diagram of the FX773 / FX775. The heart is a powerful 32bit uP with a second uP used to manage all measurements in real time.To understand the potentialities of the METROPWR FX775 Wattmeter, I attach some link diagrams. The potentialities are enormous thanks to the scalability and expandability of the instrument. Perhaps calling it a wattmeter is somewhat diminutive as in the Metrovna I thought in great designing a tool that can measure almost any power at almost any frequency as well as handle all antennas and radios at the same time. In short, a UNIQUE tool in its genre and perhaps never seen to this day. As for the Metrovna, I wanted to integrate all the features of the trade tools and integrate them into a highly high tech wattmeter. Starting with the unique design of the SMART functions, in addition to the common tools seen in the last decades. Calling on the chats in photos under some link diagram:

– Easy for HF / 50MHz 3 / 5kWat

It has a large Lcd touch screen display very fast and responsive, with which you can monitor:

  • Measurement errors
  • High SWR alarm
  • RX/TX/Standbye
  • Monitoring ADC/ACT
  • Check Bus I2C

In the picture, the Metrowatt FX775 with the first menu through which you can view

  • AVG power, PeP (5kW autoranging scale)
  • Express power mW / W / kW and dBm
  • SWR / RL
  • Double function smeter Power AVG,P&P
  • Measures Return Loss
  • Parameter Measurement Antenna Resistance, Impedance, Reactive (R, Z, X) Up to 3 / 5kW
  • Voltage Supply Vcc / USB
  • Operating frequency MHz, KHz, Hz
  • Operational OM band

New software for windows to control the FX775 via USB


Laboratory test FX775+FX5 with 3500Watt OM3500HF linear amplifier









  •  Coverage 1.8/55 MHz 160/6mt 
  •  HF/55MHz Measure Power AVG, PeP, dBm, R, Z, |X| , SWR, Frequency
  •  Wide Autoranging Power range 0.5W/5kW full-scale 10kW
  •  HF/50MHz Optional Couplers  0.5W /3kW (FX3) – 0.5W/5kW (FX5)
  •  Accuracy SWR error about 5%*
  • Frequency counter
  •  Directivity Coupler 30dB
  •  Accuracy Power about 5%*
  •  Operating voltage 9/13.8V
  •  Dimensions 205x110x130 mm
  •  Weight 300gr

Functional characteristics

  •  Display TFT 7” (FX775) 16 K color Touch screen
  •  uP 32bit + Coprocessor
  •  14 Internal Menus (expandable)
  •  Internal Analog/Digital UTC Clock 
  • Weather station (%Humidity/temp C/F)
  •  PC USB port
  •  ADC resolution 16bit
  •  Fast 2 x OUT Port
  •  updating Firmware through USB
  • 4 x SMA rear port
  • expandable 2 x Sensor + 2 X Antenna Switch 


FX773/5 Accessories and Sensors


Optional Coupler FX3

  • Coverage 1.8/55 MHz 160/6mt
  • Power 3kW PeP
  • Directivity 30dB
  • Flatness 0.1 dB
  • Connector so259 + SMA


Optional Coupler FX5

  • Coverage 1.8/55 MHz 160/6mt
  • Power 5kW PeP
  • Directivity 30dB
  • Flatness 0.1 dB
  • Connector so259 + SMA



Optional Radio/Antenna Switch FX7*

  • Coverage 1.8/55 MHz 160/6mt
  • Power 1kW PeP
  • 1X4 Positions So259
  • Flatness 0.1 dB
  • In/out EXP Bus (Easy Lan Conector)
  • No need ext. supply
  • FX4* (for FX771 2017/18 Version)
  • FX7* (for FX771 2019 Version)
  • FX7 (for all VersionFX773/FX775

*half band after accuracy calibration