FlexRadio FLEX-8400M

Remotely operated HF/VHF SDR transceiver

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Same as the FlexRadio FLEX-8400 but with added front controls.

General characteristics

HAM bands: 160m 80m 60m 40m 30m (WARC) 20m 17m (WARC) 15m 12m (WARC) 11m (CB) 6m 10m
Frequency stability: (0⁰C – 50⁰C) 0.5 p.p.m. (TCXO)
Tuning steps: 1 Hz
Memories: ?

Receiver

RX-range: 30 kHz – 54 MHz
Modulations: AM AM-sync FM N-FM CW USB LSB RTTY Digital (other) DV
Sensitivity: ?
Selectivity: ?
Filters: ?
Receiver system: SDR, Direct Digital Sampling ADC sampling rate: 122.88 Msps, ADC resolution: 16 bit.
IF-frequencies: ?
Image rejection: ≥ 100 dB
Audio output: 1W diagnostic speaker

Transmitter

TX-range: 160-6 m
Modulations: AM AM-sync FM N-FM CW USB LSB RTTY Digital (other) DV
RF-output: 160m-6m Transmitter Output: 1-100W (25W AM)

Connections

Antenna: BNC + SO-239
Impedance: 50Ω
Other: -

Electrical

Power requirements: 13.8 V DC +/- 15% (14 V DC Nominal)
Current drain RX: 1.7 A
TX: 23 A

Physical

Dimensions (w×h×d): 356 × 171 × 337 mm (14.02 × 6.73 × 13.27 in)
Weight: ?
Form factor: Base Station
Manufactured: Between 2024 and 202x in USA

Other features

Usage: Amateur / Ham radio operators
Features + options: Optional Integrated Automatic Antenna Tuner Range: 3:1 SWR
Optional Continuous MARS/CAP Coverage with Extended Transmit Filter
Accessories: -
RigReference ID: 6629
MPN: FLEXRADIO-FLEX-008400M

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Manuals, diagrams and brochures

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New and second-hand prices

Estimating the value of a rig can be challenging. We collect prices paid by real hams over the years to help you estimate the value of a used FlexRadio FLEX-8400M. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on historic price data, today's estimated value of the FlexRadio FLEX-8400M in Good condition is around:

USD 2,744

Price History Chart

These estimates are based on the following prices:

Year	Historic price	Condition	Submitted by
2025	USD 3649.00	New / Mint	RigReference

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