FLEX-8600 SDR Transceiver


1st delivery in August 2024.

The FLEX-8600™ offers the ultimate in high performance direct sampling SDR technology for the most demanding HF/6m DXers and contesters.

Available in August 2024, contact us to pre-order your new FlexRadio!

6,039.53 $

  • EUR: 5,549.00 €
  • SEK: 62 820 kr

1st delivery in August 2024.

max 1 available through backorder

The FLEX-8600™ allows use of up to four 14 MHz spectrum waterfall displays and independent receivers to revolutionise your view of the bands. Its four receivers can be placed simultaneously on any band and mode with instant QSY between VFOs. Digital mode and remote operation are a dream.

Supporting Adaptive Predistortion

The FLEX-8600™ is designed for the ham who is looking to operate the radio from a PC, laptop, Maestro™, Mac or iOS client — either local or remote. You get 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 maximising your fun during casual operation. The FLEX-8600 puts leading-edge technology is in your hands.

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 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 SmartSDR™ software offers compatibility across the entire FLEX-8000 Signature Series family to deliver continuous leveraged software enhancement. And you can use the latest SmartLink™ technology to access your radio virtually anywhere from any SmartSDR compatible client with only a login and password — even your iPhone.

FLEX-8600 Features

  • 100W PEP HF-6M Operation
  • All Modes/All Bands
  • Integrated Remote Operation with a Maestro™, iPad®, iPhone® or PC/Laptop
  • Four Independent Band / Mode Receivers
  • Full Duplex Cross-Band Operation
  • True Diversity Reception
  • Two Receive-Only Ports
  • Two Transverter/Exciter Ports
  • Economical SO2R Solution – (OTRSP) Support In One Radio
  • Contest Band Filters: >50 dB Rejection
  • Direct Sampling SDR 245.76 Msps – 16 Bit
  • 115 dB 2kHz RMDR
  • >155 dB Dynamic Range
  • Built In Antenna Tuner
  • 10 MHz Reference Input
  • Integrated GNSS receiver with antenna maintains radio frequency with no adjustments
  • Optional High-performance GPSDO for ultra high frequency precision and accuracy
  • Optional Continuous MARS/CAP Coverage with Extended Transmit Filter

Plug & Play Remote*

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

Anywhere, Anytime, From Any Of These Devices:

With SmartLink and a FLEX-800, 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.

Best in Class Performance

  • 115db 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 Windows
  • SmartSDR for Mac
  • SmartSDR for iOS
  • SmartSDR CAT
  • DAX

*SmartLink Remote Requires SmartSDR V2.x License or Later. Requires an Internet connection.

FLEX-8600 Specifications


  • 4 Independent Band/Mode Receivers (Max)
  • 1 / 2 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 Ports): 2/4
  • Full Duplex RX/TX Operation
  • Simultaneous Receive on Two Antennas (e.g. 20m & 6m)
  • Single Radio SO2R Operation – No External Equipment
  • Diversity Reception

Spectrum / Waterfall Display

  • Spectrum/Waterfall Displays (Max): 4
  • Spectrum/Waterfall BW (Min/Max): 1.2 kHz–14MHz
  • Spectrum Dynamic Range (Max Zoom): >155 dB
  • Spectrum Resolution Bandwidth (Min): 1.6 Hz


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


  • Integrated Remote Operation with SmartLink™
  • Maestro, PC, MAC, iPhone®, iPad® Client Options
  • Integrated 12-channel GNSS Receiver, TTFF (COLD) <35s: GPS, Galileo, GLOSNASS, QZSS, SBAS
  • Frequency Stability (0C – 50C): 0.001ppm (GNSS), 0.5ppm (TCXO)
  • Optional GPS Disciplined Oscillator Optional 5 x 10-12 Over 24 Hours
  • External 10MHz Reference Input
  • Power Supply Requirements: 13.8 VCDC +/- 15% (14 VDC Nom)
  • 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.

FLEX-8600 Whats in the Box

  • FLEX-8600 Transceiver
  • FHM-3 Hand Mic
  • DC Power Cable
  • Ethernet Cable
  • Quick Start Guide

Want to know even more?

Preliminary information. Some features subject to change without notice. Some features may be in future firmware releases.

SKU: FLEX-8600 Categories: , Tag:
Weight 6.4 kg
Dimensions 46 × 44.5 × 29.5 cm


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