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Last modified 2023-03-27

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FlexRadio Systems Flex-6600M

A picture of FlexRadio Systems Flex-6600M


Type:Amateur HF/VHF SDR transceiver
Frequency range: TX: 10-160 m + WARC / 6 m
RX: 0.03-54 MHz
Tuning steps:Down to 1 Hz
Frequency stability:? ppm
Mode:AM / Sync-AM / FM / SSB / CW / RTTY (DV option)
Channels / memory management: Depending on software
Repeater shift / offset:Depending on software
Power supply:13.8 VDC 15%
Current drain / power consumption:RX: Max 2 A
TX: Max 23 A
Antenna impedance / connector:50 ohm / Two SO-239. Two BNC (RX only). Two BNC (Transverter)
Dimensions (W*H*D):350*171*337 mm (14*6.74*13.25")
Weight:? Kg (? lb)
Other features: Four USB2 ports. Four independent receivers. Four 14 MHz panafall displays.
LAN port. Full duplex operation. Full QSK. Integrated remote operation.
Synchronous diversity reception.

Receiver system: Direct digital sampling
ADC sampling rate: 245.76 Msps
ADC resolution: 16 bit
Image rejection:
AF output power / speaker:2 W at ?% distortion / ? ohm
External speaker connector:

RF output power: 1-100 W (AM: 1-25 W)
Modulation system:Digital low power at carrier frequency
Max FM deviation (Factory set):FM: 5 KHz
NFM: 2.5 KHz
Spurious emissions:Better than -? dB
Microphone impedance / connector:600 ohm (Nominal) / ?-pin (3.5 mm)
Microphone input level:? mV

Additional info:
Related documents:
Modifications and fixes:
Options / Accessories:
Antenna tuner, 10-80 m: 8.3-300 ohm
Antenna tuner, 10-160 m: 16.7-150 ohm
GPS disciplined oscillator
MARS/CAP coverage filter bank
ThumbDV module for D-Star mode
A rear picture of FlexRadio Systems Flex-6400