FlexControl 2017-12-19T15:33:27+00:00

FlexControl USB Controlled Tuning Knob

A FlexControl™ is the ultimate VFO and radio control accessory for all FlexRadio Systems’ software defined radios.  Developed by serious contesters, but applicable for all type of operators, the ergonomically designed FlexControl provides the ability to tune multiple VFOs, RIT and XIT with a simple turn and/or press of the weighted, smooth action tuning knob.

In addition to the multi-function tuning knob, there are three, multi-state programmable push buttons that you can assign a multitude of radio control actions, such as changing the tune step, RX filters or CW speed, just to name a few.

Unlike other tuning knobs, the FlexControl is not another “mouse” like device and will continue to control PowerSDR, SmartSDR or your SDR even if the active Windows program is neither PowerSDR nor SmartSDR.  This is known as the “focus issue” and the FlexControl solves it; allowing you to have your logging program or any other program active while interactively operating the radio with the FlexControl.

FlexControl Feature Highlights

  • Maintains radio control when the SDR software does not have focus
  • Weighted multi-function tuning knob
  • Three assignable "macro" buttons with LED indicators
  • Ergonomic design


  • Designed to work with SmartSDR for Windows and PowerSDR 2.x
  • Works with DDUtil software
  • USB v2 interface


  • Height: 1.5" (3.8 cm)
  • Width: 3" (7.6 cm)
  • Depth: 4" (10.2 cm)
  • Weight: Approximately 1 lbs. (0.45 kgs)
  • Cord Length: Approximately 6' (1.8m)

PowerSDR FlexControl Quick Start Guide0.6 MiB3157
SmartSDR for Windows FlexControl Quick Start Guide0.5 MiB2515

FlexControl 1-Year Limited Hardware Warranty

This Limited Warranty is effective as of the date of first purchase by the consumer. Original equipment hardware warranties and manufacturer support for FlexRadio Systems' products applies only to the original purchaser. Before sending in your product for service, it is recommended that you query the FlexRadio Community to make sure your issue is not easily resolved. If you still have an issue, submit a request for support via the FlexRadio HelpDesk. Once you are assigned a incident or ticket number, one of our Technical Support Engineers will determine if the issue your product is experiencing requires service or repair and will either issue you an RMA (Return Material Authorization) number for service in Austin, TX or refer you to another authorized Service Center. Any product returned for service that is out of warranty or has had its warranty voided is subject to a one (1) hour diagnostic bench charge. This charge will be applied to any work performed.

What is Covered:

During the first thirty (30) days after the date of shipment, FlexRadio Systems will fully repair or replace defective product at their discretion. For the remaining one (1) year after the date of shipment, FlexRadio Systems will replace defective parts free of charge (post-paid) for components only. Any replacement hardware parts will be warranted for the remainder of the original warranty period or ninety (90) calendar days from the date of installation or repair, whichever is longer. FlexRadio Systems will also correct any failure caused by defective parts and materials. You must send the unit at your expense to FlexRadio Systems. FlexRadio Systems will pay return shipping to the country of purchase.

What is Not Covered:

This Limited Warranty as it pertains to the product does not cover repair or damage caused by (1) misuse, negligence or user modifications; (2) the incorrect installation of any and all cables connected to the PC by the user; or (3) random acts of nature such as flood, fire, water, weather related storm, lightning or electrostatic discharge damage.

Limitation of Incidental or Consequential Damages:

This warranty does not extend to non-FlexRadio Systems equipment or components used in conjunction with our products. Any such repair or replacement is the responsibility of the customer. FlexRadio Systems shall not be liable or responsible for reimbursement for any special, indirect, incidental or consequential damages, including but not limited to any loss of business or profits, loss of property, loss of revenue, loss of use, loss of data, inconvenience or cost of unauthorized service.

Purchase the FlexControl USB Controlled Tuning Knob directly from our Online store or from one of our authorized FlexRadio Distributors for our EU customers.

Purchase a FlexControl via the Online Store Today!

For more information contact FlexRadio Systems Amateur Sales.