Antenna Genius is a smart antenna switch that features 8 antennas to 1 radio. 

It is best suited for use with the FLEX-6300, FLEX-6400, or FLEX-6500.

LAN/WAN capability was a core design capability from day one and not an afterthought. The entire Genius product line: Interface Genius, Antenna Genius, Rotator Genius and Station Genius all work together seamlessly both locally and remotely.

Each 4O3A Genius device has a comprehensive API to allow deep integration with other ham gear and software for logging, contesting, digital modes, etc.

Note: RF on 6M / 50Mhz needs to be limited to 800 watts for Constant Carrier Modes such as FT8, RTTY, etc.

  • Antenna Genius ensures your RX antennas will not be used for TX.
  • Automatic antenna switching for FlexRadio transceivers, 4O3A Interface Genius, BCD or manually by our Windows app or Pin To Port.
  • Rugged stainless steel chassis with wall mount flange.
  • User programmable band ranges.
  • Capable of 3000W @ 1.5:1 VSWR CCS (e.g. RTTY) duty cycle for five minutes.


  • Weight: 112 oz
  • Width: 13 in
  • Depth: 16 in
  • Height: 7 in
  • Dimensions: 7″H x 7″W x 3.5″”D (18 x 18 x 8.5 cm)
  • Weight: 3.5 lbs (1.59 kg)
  • DC power, RJ-45 (100-Mbps Ethernet), 15-pin DE-15 socket (VGA style). DB-9 female socket
  • Power Consumption: 13.8-VDC @ 300mA
  • Controlled by: FlexRadio, 4O3A Interface Genius, BCD or Pin To Port
  • SO-239 RF Connectors

Plug and Play

The 8×1 Antenna switch will work with any FLEX-6000 series radio but is best suited for the FLEX-6300, FLEX-6400 or the FLEX-6500.  It is easily configurable with 4O3A’s Antenna Genius Windows software.  It is also able to function with OEM radios that can provide CAT data.

More Options. Less Cost

Regular firmware updates continue to add valuable features to your Antenna Genius free of charge for the life of the product.

FlexRadio does not charge your credit card until your order ships, but we do pre-authorize the full purchase price at the time you place your on-line order. If you choose to use PayPal as your payment method, your account will be charged immediately.

Resources for Antenna Genius 8×1