The FLEX-8600M offers the ultimate performance direct sampling SDR technology and the best value for the serious HF/6m operator.

Supporting Adaptive Predistortion

The FLEX-8600M integrates all FLEX-8600 capabilities with a stunning 8-inch 1920×1200 IPS WUXGA touchscreen display and ergonomic controls to deliver a high-performance Software Defined Radio (SDR) with a traditional radio interface. It delivers unmatched band awareness from an integrated display while providing an external connection to monitor compatible 1900×1200 resolution on a monitor for maximum spectral visibility. Influenced by top contest/DX operators,the FLEX-8600M’s symmetrical, dual VFO controls are strategically placed to provide maximum productivity for chasing rare DX, winning contests, digital mode dun, or even casual operation. It’s all self-contained so just plug it in and operate – no PC, network or learning curve required. An antenna tuner is included.

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 Power Genius 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.

FlexRadio’s industry-leading SmartSDRTM software offers compatibility across the entire FLEX-8000 Signature Series family to deliver continuous leveraged software enhancement. And you can use the latest SmartLinkTM technology to access your radio virtually anywhere from any SmartSDRTM compatible client with only a login and password – even your iPhone.

* Mac OSX SmartSDR and iOS SmartSDR clients are provided by third-party vendors

  • 100W PEP HF-6m operation
  • All modes/all bands
  • Integrated Remote Operation with Maestro, PC/Laptop, Mac, IPad® or iPhone®
  • 4 Independent Band / Mode Receivers
  • Full Duplex Cross-Band Operation
  • True Diversity Reception
  • Two Receive Only Ports
  • Two Transverter Ports
  • Economical SO2R Solution – (OTSPR) Support in One Radio
  • Contest Band Filters: >50 dB Rejection
  • Direct Sampling SDR 245.76Msps – 16 bit
  • 115 dB 2kHz RMDR
  • >155 dB Dynamic Range
  • 10 MHz Reference Input
  • Integrated Antenna Tuner, Range 3:1 SWR
  • Optional GPSDO for ultra high frequency precision and accuracy
  • Optional MARS/CAP/SHARES TX Expansion Module

All-in-One SDR includes all the features of the FLEX-8600 plus

  • Spectacular 8-inch, 1920 x 1200 IPS Integrated Display
  • Touch Tune, Zoom, Pan Controls at Your Fingertips
  • Ergonomically Optimized Controls with Full Dual VFP
  • Up to 14 MHz Spectrum/Waterfall Bandwidth
  • Real-time Spectrum / Waterfall
  • External Display Output – Full 1920 x 1200 Resolution
  • Internal Speaker


  • Weight: 272 oz
  • Width: 18 in
  • Depth: 19 in
  • Height: 12 in


  • 4 Independent Band/Mode Receivers (Max)
  • ½ kHz Reciprocal Mixing Dynamic Range (RMDR): 110/115 dB
  • ADC Bits/Sampling Rate: 16/245.76 Msps
  • Frequency Coverage: 30 kHz-54 MHz
  • Amateur Band Preselectors: 7th Order Contest Bands, 3rd Order Other
  • Cable-less Digital Audio (DAX/DAX IQ) Channels: 4/4
  • Receive Only Ports (Base/Including XVTR Port): 2/4
  • Full Duplex RX/TX Operation
  • Simultaneous Receive on Two Antennas (e.g. 20m & 6m)
  • Single Radio SO2R Operation – No External Equipment Needed
  • Diversity Reception

Spectrum / Waterfall

  • Integrated Touch Panel Display Size Diagonal: 8-inch (8600M)
  • Integrated Display Resolution: 1920 x 1200
  • External Display Resolution/Connection: 1920×1200 / HDMI (8600M)
  • Spectrum / Waterfall Displays (Max): 4
  • Spectrum /Waterfall BW (Min/Max): 1.2 kHz to 14 MHz
  • Spectrum Dynamic Range (Max Zoom In): >155 dB
  • Spectrum Resolution Bandwidth (Min): 1.6 Hz/px


  • 160m-6m Transmitter Output: 1-100W (25W AM)
  • Harmonic Suppression (Typ): <60 dBc
  • Transverter Ports: 2
  • Transverter Frequency Coverage/Power: 100kHz – 54 MHz/0 to +10 dBm
  • Integrated Automatic Antenna Tuner Range: 3:1 SWR
  • Optional Continuous MARS/CAP Coverage with Extended Transmit Filter


  • Integrated Remote Operation (SmartLink)
  • Maestro, PC, Mac, iPhone® and iPad® Client Options
  • Frequency Stability (0⁰C – 50⁰C) 0.5ppm (TCXO)
  • Integrated 12-channel GNSS Receiver, TTFF < 35s:
    • GPS: L1C/A, Sensitivity: Hot >-162dBm, Cold >-148dBm, tracking and
      reacquisition >-162dBm
    • GLONASS:
  • Optional Disciplined Oscillator (5 x 10-12 Over 24 Hours)
  • External 10MHz Reference Input
  • Power Supply Requirements 13.8 VDC +/- 15% (14 VDC Nominal)
  • Dimensions 6.74”H (17.1 cm) x 14”W (35.6 cm) x 13.25”D (33.7 cm)

1. RTTY and other digital modes use 3rd party software over DAX channels.

Simply Beautiful

  • No PC required to operate the FLEX-8600M1
  • 8 inch 1920 x 1200 IPS Display
  • Up to four independent receivers
  • Up to four 14MHz spectrum displays
  • Optimized workflow
  • Ergonomically spaced / single-function controls

Anywhere, Anytime, From Any of These Devices:
With SmartLink and a FLEX-8600, you can operate your radio from almost anywhere! Just take an iPhone, iPad, Mac, Laptop, or Maestro with you and instantly connect to your radio with virtually no setup required.

Plug & Play Remote2

  • No complex setup required
  • Operate anywhere, any time
  • Use a Maestro, Mac, iPad, iPhone or Laptop
  • Across the country or across the world

Best in Class Performance

  • 115 db RMDR
  • No listening fatigue
  • Ultra-low phase noise
  • Full Break-in QSK CW
  • Diversity Reception
  • SO2R in a box
  • Brick Wall Filters
  • Stunning transmit audio

Backed by an Amazing Suite of Software

  • SmartSDR for the M Model Radio
  • SmartSDR for Windows
  • SmartSDR for Mac3
  • SmartSDR for iOS3
  • SmartSDR CAT
  • DAX

1 – A PC is required for use of 3rd party software such as loggers and digital mode programs.
2 – SmartLink Remote requires SmartSDR v2.x license or higher. Requires and Internet connection.
3 – SmartSDR for Mac and SmartSDR for iOS are optional, 3rd party software for pay options.

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.

Due to the price class of a FLEX-8600M, your order may exceed your credit card’s daily transaction limit resulting in your order not being completed. In these cases, you may either contact your credit card company and negotiate a different daily purchase limit -OR- you can call the FlexRadio Sales department at 512-535-4713 ext 1 to place your order over the phone where we will not pre-authorize order payment until time of shipment.

Resources for FLEX-8600M Signature Series SDR Transceiver