Flexradio flex-6400 , flex-6400m signature series sdr transceiver.
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Flexradio flex-6400 , flex-6400m signature series sdr transceiver.

£2,349.98
(£1,958.32 exc. VAT)
£2,349.98
(£1,958.32 exc. VAT)
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Product code: FLEX-6400
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£2,349.98
12 Months 14.9% APR
£235.00
£202.51
£2,665.12
£2,349.98
18 Months 14.9% APR
£235.00
£135.01
£2,665.12
£2,349.98
24 Months 14.9% APR
£235.00
£101.25
£2,665.12
£2,349.98
36 Months 14.9% APR
£235.00
£67.50
£2,665.12
£2,349.98
48 Months 14.9% APR
£235.00
£50.63
£2,665.12
£2,349.98
12 Months 19.5% APR
£235.00
£210.62
£2,762.41
£2,349.98
18 Months 19.5% APR
£235.00
£140.41
£2,762.41
£2,349.98
24 Months 19.5% APR
£235.00
£105.31
£2,762.41
£2,349.98
36 Months 19.5% APR
£235.00
£70.21
£2,762.41
£2,349.98
48 Months 19.5% APR
£235.00
£52.65
£2,762.41

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Flexradio flex-6400 , flex-6400m signature series sdr transceiver.

Flexradio flex-6400 , flex-6400m signature series sdr transceiver.


The FLEX-6400/6400M is a 100W HF transceiver for the shortwave bands from 160 to 10m, plus the 6m band. Two completely independent receivers are available, a necessary prerequisite to work DX in split mode or to observe other bands and modes during a contest. Full-duplex crossband operation is also possible.

The receivers are designed as direct sampling SDR receivers. A sampling rate of 122.8 MHz is used, and the AD converter has a word size of 16 bits. This results in an excellent RMDR value of 115 dB (at a 2 kHz distance). As a visible result of this high-end digital technology, the user has a spectrum width of up to 7 MHz, more than sufficient to observe several amateur radio bands simultaneously. The frequency range of the receiver is from 30 kHz to 54 MHz, the transmitter is limited to amateur radio bands. The preselect or with 3-pole band filters provides a very good large signal selectivity. A low-noise oscillator contributes significantly to good receiver data. For exceptionally high requirements a 10 MHz reference clock input is available, which can be driven by an optional GPSDO. For friends of VHF bands, a transverter output and an RX input are available, enabling operation on higher bands with an external transverter.

The transmitter of the FLEX-6400/FLEX-6400M offers 100W transmit power (PEP, 25W AM), and the suppression of unwanted by-products is better than 60dBc. The transverter output can be set from 0 to +10 dBm. The transmitter is limited to the amateur radio bands provided in the respective region. An optional antenna tuner can automatically correct mismatches up to 3:1 SWR (ATU option).

As with all Flex Radio transceivers, the main focus is on the easy-to-handle remote control. The FLEX-6400 can be operated with any Windows PC, iPhone, or iPad. In addition, the Maestro console can access the transceiver via WLAN or wired Ethernet. The 'SmartSDR' software in version 3 offers a special feature: The 'multiFlex' function offers the possibility to use a transceiver of the 6000 series with a second user at the same time. This makes the 'Multi-Op/Single-Radio' operation very easy, even over long distances.

FLEX-6400M,

The FLEX-6400M model offers all of the above-mentioned features and is additionally equipped with a front panel. This makes the migration to SDR technology particularly easy, as the transceiver feels like classic shortwave radio, but uses the latest digital technology internally.

The control panel has a brilliant touch screen with a 1920x1200 pixels resolution. A wide range of functions can be accessed via this screen, such as frequency setting or selecting the operating mode. The traditional controls are intentionally placed at large distances on the front panel for easy and clear operation even in hectic contest situations. The fact that almost all of these buttons have only one function contributes to the very clear and easy-to-learn operation of Flex radio transceivers.

Remote Operations

Every Flex Radio model - with or without a front panel - can be easily remote-controlled. The following options are available:

Smart SDR Software on Windows-PC,

Smart SDR for IOS on iPhone or iPad,

Maestro Console,

This remote control can be done via the local network in a building, but also via the Internet from a great distance. No matter where you are - you can still work that rare DX station from your own station when you are sitting in the hotel! With the latest version V3 of the Smart SDR software, it is even possible to operate a transceiver with two remote operators at the same time. Any mix of the above-mentioned devices can be used - a PC, iPhone/iPad, or the Maestro console.

Included in the shipment,

Flex Radio 6400 or 6400M,

FHM-2 Microphone,

DC Cable Power pole, another side open,

RJ-45 Ethernet Cable.

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