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Special Offer - Flex has announced a special promotion! FREE Rack Mount or Handle Kit PLUS £100 ML&S Voucher

Update 14/2/18 - we've recieved our 6400M demo unit! We expect customer units to arrive very soon after CE Approval.

Update 16/8 from Flex Radio:

"Since announcement of these radios we have made a few changes in hardware and software that we are pleased to share with you. Based on customer feedback we added a dedicated ¼ inch TRS balanced microphone input to the back panel of the FLEX-6600/6600M. We also incorporated a blue backlight for the FlexRadio front panel logo on the 6400/6600 base models. In July we released SmartSDR™ version 2.0 of which includes the exciting new SmartLink™ Remote feature allowing you to access your radio from anywhere you have a broadband connection (included with all new radios). We believe all of these things will add to the overall experience of the radio.

The last components for the FLEX-6400M and FLEX-6600M models are currently scheduled to arrive in the factory during the second half of September.  Also, the final plastic front panel components for the FLEX-6400 and FLEX-6600 models are expected in late October. This currently places production start up approximately one month behind where we originally estimated.  SmartSDR integration is nearing completion and the new models will enter beta testing soon."


Both the FLEX-6600™ and FLEX-6600M™ offer the ultimate performance direct sampling SDR technology and the best value for the serious HF/6m operator. The FLEX-6600 model is designed for the Ham who wants to operate the radio exclusively as a server from PC, laptop, Maestro, Mac, or iOS clients – whether local or remote. Both models share the same game changing band awareness, industry leading phase noise performance/ receiver dynamic range, and brick wall filters to give you the advantage in the most competitive DXing or contesting activities while maximizing your fun in casual operations. With a PC, laptop, or Mac client, you can utilize up to four 14 MHz spectrum/waterfall displays and independent band/ mode receivers to revolutionize your view of the bands, especially on digital modes.

Contest grade filters, ultra low spurious emissions, and the ability to operate full duplex cross band on two antennas let you transmit on one band while receiving on another – no external equipment required. Even switch to synchronous diversity reception when needed to help you pick out the weak ones in the midst of QRM. By adding FlexRadio’s new PowerGenius XL LDMOS solid state amplifier a complete legal limit, all mode SO2R station is now practical with one radio, one amp and only three interconnect cables – half the cost and none of the complexity.

The FLEX-6600M places the most used controls right at your fingertips. Controls are labeled for intuitive operation and designed to minimize hand motion for the most common operations. Occasionally used controls are easily accessible on the large touch screen display bypassing the complexity of multi-function buttons and multi-level menus found on other transceivers. Like modern smartphones and tablets, capacitive touch control is provided on the large LCD display for intuitive pan, zoom, tune, and menu operation. The FLEX-6600M controls are designed to provide maximum tempo in the most demanding applications including SO2R, Run, S&P, and Multi-op contesting.

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