U20557 Used FlexRadio Flex-6600M HF/50MHz SDR Transceiver V4.3

U20557 Used FlexRadio Flex-6600M HF/50MHz SDR Transceiver

This pre-owned FlexRadio Systems FLEX-6600M software-defined transceiver is in pristine condition with zero blemishes, scratches, or cosmetic flaws across the cabinet and front panel. The integrated 8-inch high-resolution color touch display screen is clean and scratch-free, and all optical VFO encoders, multi-function concentric knobs, and tactile pushbuttons actuate crisply with smooth factory feel. The rear brushed connection panel is immaculate, featuring clean SO-239 antenna jacks (ANT1 and ANT2), BNC RX antenna ports, balanced audio input, HDMI external display port, dual USB accessory jacks, Gigabit Ethernet port, RCA interfacing jacks, and an undamaged Anderson Powerpole DC power terminal.  It comes complete with a FlexRadio FHM-2 hand microphone, DC power cable with Anderson Powerpole connectors, Ethernet network cable, and its original FlexRadio factory shipping carton. This transceiver is running firmware version 4.3.

The FLEX-6600M is FlexRadio’s premier stand-alone direct-sampling SDR transceiver, pairing complete internal PC processing and dual independent Spectral Capture Units (SCUs) with a physical Maestro-style control console. Covering 160 meters through 6 meters (1.8 to 54 MHz) with 100 Watts of RF output across all modes, its true dual-SCU architecture enables simultaneous reception on different bands and antennas, true diversity reception, and up to 4 independent Slice Receivers with individual real-time panadapters and waterfall displays. The "M" model features an integrated 8-inch IPS touchscreen display alongside dedicated front-panel physical controls for dual VFOs, filtering, AGC, audio, and slice management—delivering an authentic analog operating experience without requiring an external PC, while still supporting full SmartSDR networking across PCs, iOS devices, and remote setups.

Condition

• Cosmetic Condition: Pristine pre-owned condition throughout. The top cover, side panels, and front faceplate show zero signs of wear, rub marks, or scratches.

• Touchscreen & Display: The 8-inch IPS color display is bright, clear, and spotless with excellent optical clarity and responsive touch operation.

• Front Controls: Dual weighted VFO tuning knobs, concentric potentiometers, and all silicone push buttons operate smoothly with clean, legible factory lettering.

• Rear Hardware & Connectors: SO-239 RF ports, BNC receiver jacks, HDMI external monitor port, USB, Ethernet, and DC input terminals are in spotless condition.

• Accessories & Packaging: Includes the FlexRadio FHM-2 hand microphone, fused DC power harness with Powerpoles, Ethernet patch cable, and the original factory box.

Key Features

• Dual Direct-Sampling SCUs: Houses dual independent Spectral Capture Units with 16-bit ADCs for true diversity reception and multi-antenna dual-watch.

• Integrated Stand-Alone Console: Features an 8-inch high-resolution touchscreen and dedicated knobs and buttons for complete stand-alone operation without an external computer.

• 4 Slice Receivers: Simultaneously monitor, decode, and operate on up to 4 independent slice frequencies across separate bands.

• 100W HF/6M Output: Delivers a full 100 Watts PEP output across 160M to 6M in SSB, CW, AM, FM, and digital modes.

• Contest-Grade 7th-Order Preselectors: Built-in sharp bandpass filtering provides exceptional adjacent-signal rejection in dense multi-transmitter environments.

• External HDMI Video Output: Dedicated rear HDMI port drives an external monitor to expand your panadapter and waterfall view.

• SmartSDR Ecosystem & LAN: Connects over Gigabit Ethernet for native remote operation from a PC, Mac, iPad, or Maestro.

• Full Break-In (QSK) CW: Ultra-fast, quiet electronic T/R switching for rapid digital and CW turnaround.

What's Included

• FlexRadio Systems FLEX-6600M Direct-Sampling SDR Transceiver

• FlexRadio FHM-2 Hand Microphone

• DC Power Cable with Anderson Powerpole Connectors

• Ethernet Network Cable

• Original FlexRadio Factory Packaging Box

Comes With Our 90-Day Warranty!

Serial Number: 0718-7826-6601-5573

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