U20578 Used FlexRadio Flex-6400M HF/50 MHz Direct-Sampling SDR Transceiver - From Smoker Environment

U20578 Used FlexRadio Flex-6400M HF/50 MHz Direct-Sampling SDR Transceiver - From Smoker Environment

This pre-owned FlexRadio Systems FLEX-6400M software-defined transceiver is in good overall cosmetic and operating condition, with the main aluminum cabinet, large integrated touchscreen display, and rear interface panel remaining clean and well-kept. The high-resolution 8-inch IPS front display illuminates brightly. All physical front-panel controls—including the weighted dual optical VFO tuning encoders, multi-function concentric potentiometer, and illuminated tactile function buttons actuate smoothly and operate properly. Please note the following condition details: The front power pushbutton shows visible fading, and the transceiver originates from a smoking environment, meaning a tobacco odor may be present when operating. On the rear panel, the dual SO-239 antenna ports, BNC RX antenna input, BNC transverter port, HDMI external display output, dual USB ports, Gigabit Ethernet jack, 1/4" and 3.5mm audio jacks, RCA keying lines, and Anderson Powerpole DC power terminals are clean, straight, and fully intact. It comes complete with a FlexRadio hand microphone, a DC power cable with Anderson Powerpole connectors, a blue Ethernet patch cable, an external gps antenna, and the original FlexRadio shipping box.

The FLEX-6400M is a premier standalone direct-sampling SDR transceiver designed to deliver elite HF and 6-meter (160M–6M) performance without requiring an external computer or control console. Featuring a vibrant 8-inch 1920x1200 IPS touchscreen display paired with dedicated ergonomic physical knobs and buttons, it bridges modern high-definition SDR visual awareness with the tactile comfort of a traditional station rig. Its direct-sampling architecture utilizes a high-performance 16-bit analog-to-digital converter (ADC) sampling at 122.88 Msps to provide a reciprocal mixing dynamic range (RMDR) of 115 dB, effortlessly isolating weak DX signals alongside strong adjacent-channel broadcast carriers. Delivering 100 Watts of RF output across all modes (SSB, CW, AM, SAM, FM, and digital), the radio supports two independent band/mode Slice Receivers with real-time spectrum panadapters and waterfall displays up to 7 MHz wide. Complete with full SmartLink remote capability over LAN or WAN, the FLEX-6400M represents an all-in-one software-defined centerpiece for contesting, DX chasing, and everyday ragchewing.

Condition

• Cosmetic Condition: Good pre-owned condition overall; cabinet surfaces, rear connection plate, and bezel are clean.

• Front Controls & Power Switch: All dual rotary encoders, concentric pots, and pushbuttons operate cleanly with firm tactile clicks; the front illuminated power pushbutton exhibits cosmetic fading.

• Display & Touchscreen: The 8-inch IPS WUXGA color touchscreen is clear, bright, and fully responsive across all menu and panadapter functions.

• Environment / Odor Note: Comes from a smoking environment; a noticeable smoke smell can be emitted from the internal cooling fans during active operation.

• Rear Hardware & Ports: Dual SO-239 RF ports, BNC receiver/transverter jacks, HDMI monitor port, USB sockets, LAN port, and Anderson Powerpole DC terminals are in excellent physical condition.

• Packaging & Accessories: Includes the matching hand microphone, DC Powerpole cable harness, Ethernet patch cable, gps antenna, and factory shipping box.

Key Features

• Standalone "M" Model Operation: Integrated 8-inch 1920x1200 IPS color touchscreen and ergonomic physical controls allow full operation without an external PC or Maestro.

• Direct-Sampling SDR Performance: 16-bit ADC sampling at 122.88 Msps delivers an exceptional 115 dB RMDR at 2 kHz spacing.

• 100W Output Power: Full 100 Watts PEP continuous output covering 160 meters through 6 meters in all modes (25W AM).

• Dual Independent Receivers: Features 2 independent Slice Receivers with simultaneous dual panadapters and high-definition waterfall displays spanning up to 7 MHz wide.

• Optimized RF Preselection: Built-in 3rd-order bandpass preselectors suppress out-of-band signals and intermodulation in high-RF contest environments.

• External HDMI Output: Rear HDMI port supports full 1920x1200 high-definition external monitor mirroring.

• Full Remote Integration (SmartLink): Operate anywhere via LAN, Wi-Fi, or Internet using SmartSDR on Windows, Mac, iPad, or iPhone clients.

• Comprehensive Interfacing: Equipped with 2 SO-239 antenna jacks, dedicated RX-only BNC antenna port, transverter port, dual USB slots, and 10 MHz reference input.

What's Included

• FlexRadio Systems FLEX-6400M Direct-Sampling SDR Transceiver

• FlexRadio Handheld PTT Microphone

• Fused DC Power Cable Harness with Anderson Powerpole Connectors

• RJ-45 Blue Ethernet Network Patch Cable

• GPS antenna

• Original FlexRadio Protective Shipping Box

Comes With Our 90-Day Warranty!

Serial Number: 3421-1104-6401-1947

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