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2 neue Modelle von FLEX  
The new Flex 6600M Transceiver is the very latest in SDR development from Flex Radio. So what are the stand-out differences between the 6500 and 6600M?

Flex 6400M is exactly the same as the flex 6400 with a traditional radio front panel (Flex Maestro style) for those that prefer the look and feel of the 'classic' Ham radio. However, as with the Flex 6400, the Flex 6400M can still be used with a Flex Maestro in order two operators can operate on different bands at the same time!

Improved Receiver Performance

Despite the fact the 6500 has an excellent receiver, Flex Radio have pushed the boundaries once again to nudge performance up a little to ensure they stay right at the top of the pile in terms of receiver performance (Sherwood Engineering independent receiver performance comparison).

Now with 2 SCU's (Spectural Capture Units)

This is a massive feature which until now has only been available on the flagship model, the Flex 6700. With two SCU's SO2R (Single Operator, 2 Radios) operation is possible with two operators working 2 bands simultaneously. Most important of all, these operators can use different antennas too. With a single SCU radio, up to 4 slice receivers can be used but only with a second SCU can an additional antenna socket be selected for one or more of the sub-band slices.

Now with DUAL Preselectors!

The 6500 has a single set of preselectors (Band Pass Filters or BPF) which improves receiver performance. However, each SCU on the Flex 6600M can be stretched across a 14MHz section of band. If two or more slices where spread across multiple bands, the BPF would have to be switched off which could affect receive performance. By adding 2 BPFs, 1 BPF can be used per slice to ensure receiver performance remains uncompromised.

Modular Design

This 6600M has been designed to use slot in boards which allows for easier repair and service over that of the Flex 6500

SmartSDR Version 2

While SmartSDR can be used on any Flex 6000 series, it is provided free of charge on the 6600. With ground-breaking single-click remote operation, Flex Radio have taken remote station operation to the next level by providing more users than ever with an easy route in.

Other FLEX-6600 Features include
•Maximum Panadapter Bandwidth: 14 MHz
•Antenna Connectors: SO-239×2; XVTR-BNCx1
•Digital Audio Exchange (DAX)
•DAX IQ Channels/Bandwidth per Channel (DAXIQ): 2 @ 24 kHz – 96 kHz
•Microphone Connector: Unbalanced 8-pin Foster, Balanced XLR/TRS
•Antenna Tuner Unit (ATU): Internal
•Wideband Frequency Coverage: 30 kHz – 72 MHz
•Transmit Frequency Coverage: 160-6m amateur bands, 100W nominal output 10dBm on 70MHz/4m
•Transverter IF Frequency Coverage: 100 kHz – 54 MHz

Receiver Specifications
•Receiver Architecture: Direct Digital Sampling
•Spectral Capture Units: One (2)
•Maximum Slice Receivers: Two (4)
•Maximum High Resolution Spectrum Displays: Two (4)
•Maximum Panadapter Width: 14 MHz
•ADC Resolution: 16-bits
•ADC Sampling Rate: 122.88 Msps
•Wideband Frequency Coverage: 30 kHz – 72 MHz
•DAX IQ Channels / Bandwidth Per Channel: four (4) @ 24 kHz – 96 kHz
•DAX Audio Channels: Two (4)
•Amateur Band Preselector Coverage: Dual 30KHz - 54MHz
•Preamplifiers / Attenuators: 0 to +20 dB
•Spurious and Image Rejection Ratio: 80 dB or better
•External Powered Speaker Output Impedance Level: 600 Ohm Stereo Unbalanced

Transmitter Specifications
•Transmitter Architecture: Direct Digital Up-conversion
•TX DAC Resolution: 16-bits
•TX DAC Sampling Rate: 122.88 Msps
•RF Output Power: 1-100W nominal SSB, CW, FM, RTTY, Digital; 1-25W nominal AM
•Amateur Band Coverage at Rated Power Output: 160m – 6m
•Low Pass PA Filter Bands: 160m – 6m ham band only
•Transverter IF Output Power: +0 dBm Typical; +15 dBm max
•Transverter IF Frequency Coverage: 100 kHz – 72 MHz
•Modulation System: Digital Low Power at Carrier Frequency
•Maximum FM Deviation: ±5 kHz
•DAX Transmit Channel: Yes
•Carrier / Unwanted Sideband Suppression: <-80 dBc typ / <-80 dBc typ
•Harmonic Radiation 1.8 – 50 MHz Amateur Bands: <-50 dBc; -70 dBc 6m
•Transmit Bandwidth: Default 100-2900 Hz (Variable 50-10000 Hz)
•Microphone Connector: Unbalanced 8-pin Foster
•Microphone Impedance: 600 Ohms Nominal (200-10kΩ)

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)
•Master Clock Frequency: 122.88 MHz
•Master Clock Phase Noise: -140 dBc@10kHz
•10 MHz Reference Clock Stability: 0.5ppm TCXO
•GPSDO Frequency Stability (GPS locked): Optional
•Emission Modes: USB, LSB, CW, RTTY**, AM, Synchronous AM, FM, NFM, DFM
•Frequency Resolution: 1 Hz min.
•Antenna Connectors: SO-239×2, XVTRx1
•Antenna Impedance (w/o tuner): 50 Ohm Unbalanced

•Power Supply Requirements: +13.8V DC nominal ±15%
•Current Drain (Receive/Transmit Max): 1.7A / 23A @ 13.8V


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