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The FlexRadio FLEX-6400 model is an evolution of the FlexRadio FLEX-6400.

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
Headless
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
6628
MPN
FLEXRADIO-FLEX-008400

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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-8400. Just bought or sold this model? Let us know what you traded it for and help other ham operators!

Based on historic data, today's second-hand price of the FlexRadio FLEX-8400 is around:

  • USD 2496.00

Price History Chart

These estimates are based on the following prices:

Year Historic price Condition Submitted by
2025 USD 2499.00 New / Mint RigReference

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