U20569 Used FlexRadio Flex-6500 HF/50MHz 100W Direct-Sampling SDR Transceiver with Antenna Tuner

U20569 Used FlexRadio Flex-6500 HF/50MHz 100W Direct-Sampling SDR Transceiver with Antenna Tuner

This pre-owned FlexRadio Systems FLEX-6500 software-defined transceiver is in great overall cosmetic and operational condition, displaying only minor, light handling marks from routine station use. The black anodized aluminum faceplate, laser-etched graphics, and signature series markings are clean and crisp. The centered OLED status display illuminates clearly, while the navigation keypad, backlit power push-button, 8-pin Foster microphone jack, 1/4" headphone jack, and key jack operate smoothly. On the rear panel, the dual SO-239 antenna ports (ANT1 and ANT2), BNC ports, balanced XLR/TRS audio input, RCA interfacing jacks, dual USB accessory sockets, Gigabit Ethernet jack, and Anderson Powerpole DC connector are clean and undamaged. It comes complete with a FlexRadio FHM-1 hand microphone, DC power cable with Anderson Powerpole connectors and terminal lugs, blue Ethernet patch cable, printed Quick Start Guide, and a heavy-duty shipping carton.

The FLEX-6500 is a high-performance direct-sampling SDR transceiver engineered for serious amateur radio contesting, DXing, and digital operation across 160 meters through 6 meters (1.8 to 54 MHz). Built with an integrated high-speed automatic antenna tuner (ATU), it delivers up to 100 Watts of clean RF output across all HF bands. Its direct-sampling architecture utilizes an ultra-low-noise 16-bit analog-to-digital converter (ADC) sampling at 245.76 Msps, enabling the simultaneous capture of the entire HF spectrum. It supports up to 4 independent Slice Receivers, each capable of real-time wideband panadapters and high-definition waterfall displays spanning up to 14 MHz wide. Operating natively over Gigabit Ethernet via SmartSDR on Windows, Mac, or iOS, the FLEX-6500 eliminates soundcard interfaces, ground loops, and complex cabling for modern local and remote amateur operations.

Condition

• Cosmetic Condition: Great pre-owned condition overall, showing only minor handling marks across the cabinet panels.

• Front Controls & Display: The front OLED diagnostic readout illuminates cleanly, and the power switch, navigation cluster, and 1/4" jacks are in excellent shape.

• Rear Hardware & Ports: Dual SO-239 antenna sockets, BNC transverter/RX jacks, RCA keying/ALC ports, Gigabit LAN jack, and Anderson Powerpole DC terminals are clean, tight, and corrosion-free.

• Accessories & Packaging: Complete with the FHM-1 hand mic, fused DC harness with Powerpole fittings, network patch cable, Quick Start manual, and heavy-duty shipping box.

Key Features

• Direct-Sampling Architecture: Utilizes a 16-bit ADC sampling at 245.76 Msps for outstanding dynamic range and direct RF conversion without traditional IF stages.

• Up to 4 Slice Receivers: Simultaneously monitor, decode, and operate on up to 4 distinct frequencies and bands with dedicated real-time panadapters and waterfalls.

• Integrated Automatic Antenna Tuner (ATU): Built-in high-speed tuner matches antenna impedances up to 3:1 SWR across 160M through 6M.

• 100W HF/6M Power Output: Delivers 100 Watts PEP on 160M–6M across SSB, CW, AM, FM, and digital modes.

• Ultra-Wide Spectrum Display: Real-time spectrum scope bandwidth up to 14 MHz per display slice for monitoring band conditions.

• SmartSDR Network Ecosystem: Connects directly over Gigabit Ethernet to run natively on PCs, laptops, iPads, or remote Maestro consoles.

• Extensive Rear Interfacing: Dual SO-239 antenna outputs, dedicated RX antenna loops, transverter I/O, balanced audio input, and 10 MHz reference input/output.

What's Included

• FlexRadio Systems FLEX-6500 HF/50MHz SDR Transceiver

• FlexRadio FHM-1 Handheld Microphone

• DC Power Cable with Anderson Powerpole Connectors

• Ethernet Cable

• FlexRadio FLEX-6000 Series Quick Start Guide

• Heavy-Duty Protective Shipping Carton

Comes With Our 90-Day Warranty!

Serial Number: 0616-5064-6500-6696

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