Power Genius XL




Amplifier Price: $6999
Reservation Price: $1000

The reservation will be applied toward the purchase of the amplifier when it is available for shipment.
The reservation can be refunded at any time.
Reservations are currently only available within the US. Once CE certifications are completed reservations will be made available through your local distributor.

SPECIAL OFFER: Tuner Genius included in the price for all orders in 2017!

Shipping will be calculated and charged at the time of final shipment.

You can make a reservation using PayPal. Our account address is orders@flex-radio.com
Specify your name and contact information in the transfer note or send it to sales@4o3a.com using email.

If you prefer another method of payment such as credit card or bank transfer contact us at sales@4o3a.com for more information.

Amplifier Feature Highlights

The PowerGenius XL is a 100% duty cycle, legal limit (1500W ICAS) 1.8-54 MHz RF amplifier. Designed with a pair of the latest NXP MRF1K50H LDMOS transistors that are each capable of 1.5 kW and run up to 2000W easily, providing plenty of headroom for lowest IMD and spurious output.

It has a few first ever features built in:

  • MEffA™ system (Maximum Efficiency Algorithm) control efficiency as function of output power. MEffA is a unique technique that changes the DC voltage level to the PA in a manner to match the envelope of the exciting RF in order to yield the most efficiency. The PA efficiency is not constant at a fixed DC level but varies with the envelope of the signal.
  • MD precorrector built in, improving IMD for more than 10dB. This makes PG XL the cleanest amplifier on the market.
  • Advanced vapor chamber cooling system, first of this in a HAM radio amplifier. Additionally, due to an improvement in material technology we dramatically improved the thermal conductivity.
  • PG XL is the cleanest amplifer with exceptional spurious performance achieved by its diplexed filters. Thanks to smart cooling, MEffA, real time drive settings and fan speed control PG XL has best thermal performance and lowest fan noise possible.

    PG XL is the only fully SO2R capable amplifier. It has 70dB nominal isolation between exciter inputs.
    A single FLEX-6700 and Power Genius XL comprises a complete SO2R station at half the cost of competing solutions.

    As expected PG XL is well protected from high SWR, with ultra fast SWR circuit, inhibiting RF module in less then 1uS.


    Multiple band selection methods supported including CAT, CI-V, BCD band decode and Ethernet. When connected to a FLEX-6000 transceiver, band selection is fully automated through the Ethernet connection. Even T/R control is provided over the Ethernet connection to further minimize wiring. In addition, all amplifier status reporting including power levels, fault conditions and resets are reported to the FLEX-6000 Signature Series transceiver using the SmartSDR API. SmartSDR client interfaces such as SmartSDR for Windows, Maestro and others can display power levels and other reported statuses.

    For remote operation with other HF radio exciters, an Ethernet API or friendly Windows and Android applications can control the PowerGenius XL.

    We build in a large touch screen display to enable easy future upgrades, as we plan to have constant improvement and add new funcionalities like direct control of Tuner Genius, new functions for integration with radios or peripherals etc.

    PG XL is designed by the 4O3A R&D team, one of the most experienced in professional broadcast industry as well as contesting.