AstroRadio SL


FLEX 6600

Transceptor FLEX 6600

Both the FLEX-6600™ and FLEX-6600M™ offer the ultimate performance direct sampling SDR technology and the best value for the serious HF/6m operator. The FLEX-6600 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/ receiver dynamic range, and brick wall filters to give you the advantage in the most competitive DXing or contesting activities while maximizing your fun in casual operations. With a PC, laptop, or Mac client, you can utilize up to four 14 MHz spectrum/waterfall displays and independent band/ mode receivers to revolutionize your view of the bands, especially on digital modes.

Contest grade filters, ultra low spurious emissions, and the ability to operate full duplex cross band on two antennas let you transmit on one band while receiving on another – no external equipment required. Even switch to synchronous diversity reception when needed to help you pick out the weak ones in the midst of QRM. By adding FlexRadio’s new PowerGenius XL LDMOS solid state amplifier a complete legal limit, all mode SO2R station is now practical with one radio, one amp and only three interconnect cables – half the cost and none of the complexity.


Native Remote Operation: Using Maestro, PC, Laptop, iPad or iPhone
SDR Architecture: Direct Sampling
Independent High Performance Receivers: Four (4)
Reciprocal Mixing Dynamic Range (RMDR): 116dB
Spectral Capture Units (digitizers): Two (2)
Diversity Reception Capable using Seperate Antennas: Yes
Single Operator Two Radios (SO2R) using one FLEX-6600: Yes
Contest Grade Preselectors: 7th Order on contest bands; 3rd order on remaining bands
Maximum Panadapter Bandwidth: 14 MHz
Radio Control Surfaces: Ergonomic tactile controls with touch screen interface
Integrated Display: 8-inch 1920x1200 IPS Display
External Display: 1920x1200 WUXGA via HDMI interface
Antenna Connectors: SO-239x2; XVTR-BNCx2, RX-IN-BNCx2
Wideband Frequency Coverage: 30 kHz - 54 MHz
Transmit Frequency Coverage: 160-6m amateur bands, 100W nominal output
Transverter IF Frequency Coverage: 100 kHz - 54 MHz
Full Duplex Operation: Yes
Digital Audio Exchange (DAX) Channels: Four (4)
DAX IQ Channels/Bandwidth per Channel (DAXIQ): Four (4)


Receiver Specifications

Receiver Architecture: Direct Digital Sampling
Spectral Capture Units (digitizers): Two (2)
Maximum Slice Receivers: Four (4)
ADC Resolution: 16-bits
ADC Sampling Rate: 245.76 Msps
Wideband Frequency Coverage: 30 kHz - 54 MHz
DAX IQ Channels / Bandwidth Per Channel: Four (4)
DAX Audio Channels: Four (4)
Amateur Band Preselector Coverage: 7th order on contest bands; 3rd order on remaining
1/2 kHz Reciprocal Mixing Dynamic Range (RMDR): 110/116 dB
Spectrum/Waterfall Display Specifications
Maximum High Resolution Spectrum Displays: Four (4)
Panadapter Bandwidth: 1.2 kHz - 14 MHz
Spectrum Dynamic Range (max zoom): > 155 dB
Spectrum Resolution Bandwidth (min): 1.6 Hz
Integrated Touch Panel Display Size (diagonal)1: 8" (20.3 cm)
Integrated Display Resolution1: 1920x1200
External Display Resolution/Connection1: 1920x1200/HDMI

Transmitter Specifications

Transmitter Architecture: Direct Digital Up-conversion
Modulation System: Digital Low Power at Carrier Frequency
RF Output Power: 1-100W nominal SSB, CW, FM, RTTY, Digital; 1-25W nominal AM
Amateur Band Coverage at Rated Power Output: 160m – 6m
Transverter IF Output Power: +0 dBm Typical; +10 dBm max
Transverter IF Frequency Coverage: 100 kHz - 54 MHz
DAX Transmit Channel: Yes
Harmonic Suppression: < -60 dBc typical
Transmit Bandwidth: Default 100-2900 Hz (Variable 50-10000 Hz)
Microphone Connector: Pseudo Balanced 1/8" TRS
Microphone Impedance: 600 Ohms Nominal (200-10kΩ)
Integrated Antenna Tuner Specifications
Matching Range 80m - 10m: Optional, 8.3 Ohms - 300 Ohms
Matching Range 160 and 6m: Optional, 16.7 Ohms - 150 Ohms

General Specifications

USB 2.0 Ports (peripheral control): Two (2)
Internal 10 MHz Reference Clock Stability: 0.5ppm TCXO (0-50C)
Emission Modes: USB, LSB, CW, RTTY2, AM, Synchronous AM, FM, NFM, DFM, FreeDV2
Frequency Resolution: 1 Hz min.
Antenna Connectors: SO-239x2, BNC XVTRx2, BNC RX-INx2
Antenna Impedance (w/o tuner): 50 Ohm Unbalanced
Power Supply Requirements: +13.8V DC nominal ±15%
Current Drain (Receive/Transmit Max): 2.0A / 23A @ 13.8V
Height: 6.74" (17.1 cm) with feet
Width: 14.0" (35. cm)
Depth: 13.25" (33.7 cm)
Operating Temperature: 0 to +50 degrees C; +32 to +122 degrees F
GPS Disciplined Oscillator; 5x10-12 over 24 hours
MARS/CAP Coverage Filter Bank
ThumbDV module for D-Star mode

Specifications subject to change without notice.
1FLEX-6600M model.
2RTTY and other digital modes requires 3rd party software over DAX channels.


Price: € 4 253.15      VAT included

Only in Spain Peninsula

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