FLEX-6400 Signature Series SDR Transceiver

FlexRadio Systems

SKU: FLEX-6400

MSRP: $2,299.00 $2,299.00

MSRP:

Please allow from six (6) to eight (8) weeks for shipment. Payment(s) will not be processed until an order has been shipped.

ATU Kit (6400) + $350

FLEX-6400/6600 Extended Transmit Module + $399

Certified Pre-Loved FLEX-6400/6500/6600/6700 GPSDO Upgrade + $649.99

FLEX-6400 Extended Warranty + $350

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0% APR financing available for 6 months *

As low as $101.46 / month ** Select Bread Financing at checkout. Details Purchasing programs International resellers

The FLEX-6400 offers the latest direct sampling SDR technology at an economical price for the general HF/6m operator yet it offers great performance for chasing DX and contesting.

The FLEX-6400 model is designed for the Ham who wants to operate the radio exclusively as a server from PC, laptop, Maestro, Mac*, or iOS clients — whether local or remote. Both models share the same game-changing band awareness, industry-leading phase noise performance, brick wall filters, and legendary audio performance to deliver you the most fun across a wide variety of operating styles.

With a PC, laptop, or Mac client you can utilize up to two 7 MHz spectrum/waterfall displays and independent receivers to revolutionize your view of the bands. Its two receivers can be placed simultaneously on any band and mode with instant QSY between VFOs. Digital mode operation is a dream with no sound cards, cables, or boxes needed.

FlexRadio’s industry-leading SmartSDR™ software offers compatibility across the entire FLEX-6000 Signature Series family to deliver continuous leveraged software enhancement. And you can use the latest SmartLink™ technology to access your radio virtually anywhere from any SmartSDR compatible client with only a login and password — even your iPhone.

View FLEX-6400M with integrated display

* Mac OSX SmartSDR software is provided by third-party vendors

Features

Claim a free Power Supply with code FreePSHamvention2023 or a free Flex Control with code FreeFCHamvention2023 at checkout with purchase of a 6400 Transceiver!

100W PEP HF-6m operation
All modes/all bands
Integrated Remote Operation with Maestro, PC/ Laptop, Mac, iPad^® or iPhone^®
2 Independent Band / Mode Receivers
Full Duplex Cross-Band Operation
Transverter Port
Receive-Only Port
Direct Sampling SDR 122.88 Msps – 16 bit
115 dB 2kHz RMDR
>155 dB Dynamic Range
Optional Antenna Tuner
10 MHz Reference Input
Optional GPSDO Option for ultra high frequency precision and accuracy
Optional MARS/CAP/SHARES TX Expansion Module

Full Specifications

Specs

Weight: 240 oz
Width: 18 in
Depth: 19 in
Height: 12 in

Receiver

Independent Band/Mode Receivers (Max): 2
1/2 kHz Reciprocal Mixing Dynamic Range (RMDR): 110/115 dB
ADC Bits/Sampling Rate: 16/122.88 Msps
Frequency Coverage: 30 kHz-54 MHz
Amateur Band Preselectors: 3rd Order
Cable-less Digital Audio (DAX/DAX IQ) Channels: 2/2
Receive Only Ports (Base/Including XVTR Port): 1/2
Full Duplex RX/TX Operation

Transmitter

160m-6m Transmitter Output: 1-100W(25W AM)
Harmonic Suppression (Typ): < -60 dBc
Transverter Ports: 1
Transverter Frequency Coverage/Power: 100 kHz – 54 MHz/0 to +10 dBm
Optional Integrated Automatic Antenna Tuner Range: 3:1 SWR
Optional Continuous MARS/CAP Coverage with Extended Transmit Filter

General

Modes¹ SSB, CW, AM, SAM, FM, RTTY, DIGITAL
Integrated Remote Operation (SmartLink)
Maestro, PC, Mac, iPhone, & iPad Client Options
Frequency Stability (0C – 50C) 0.5ppm (TCXO)
GPS Disciplined Oscillator Optional 5 x 10-12 Over 24 Hours
External 10MHz Reference Input
Power Supply Requirements 13.8 VCDC +/- 15% (14 VDC Nom)
Dimensions 6.74″H (17.1 cm) x 14″W (35.6 cm) x 13.25″D (33.7 cm)

1. RTTY and other digital modes use 3rd party software over DAX channels.

More info

Plug & Play Remote*

No complex setup required
Operate anywhere, any time
Use a Maestro, Mac, iPad, iPhone or Laptop
Across the country or across the world

Anywhere, Anytime, From Any Of These Devices:

With SmartLink and a FLEX-6400 you can operate your radio from almost anywhere! Just take an iPhone, iPad, Laptop, or Maestro with you and instantly connect to your radio using an Internet connection.

Best in Class Performance

115db RMDR
No listening fatigue
Ultra-Low Phase Noise
Full Break-in QSK CW
Brick Wall Filters
Stunning transmit audio

Backed by an Amazing Suite of Software

SmartSDR for Windows
SmartSDR for Mac
SmartSDR for iOS
SmartSDR CAT
DAX

*SmartLink Remote Requires SmartSDR V2.x License or Later. Requires an Internet connection.

Order payment information

FlexRadio does not charge your credit card until your order ships, but we do pre-authorize the full purchase price at the time you place your on-line order. If you choose to use PayPal as your payment method, your account will be charged immediately.

Due to the price class of a FLEX-6000, your order may exceed your credit card’s daily transaction limit resulting in your order not being completed. In these cases, you may either contact your credit card company and negotiate a different daily purchase limit -OR- you can call the FlexRadio Sales department at 512-535-4713 ext 1 to place your order over the phone where we will not pre-authorize order payment until time of shipment.