FLEX-6600 / 6600M

FlexRadio
FLEX-6600 / 6600M

Specifications

Prices

HF/50 MHz direct sampling transceiver, with or without 1920 x 1200 touch display and control console. Four independent receivers, syncronous diversity reception, RMDR 116 dB @ 2 KHz offset, enhanced 7th-order contest band preselectors, 100 Watts output power, built-in ATU. Ideated in USA, year of introduction 2018.

Reference market : amateur-radio

FLEX-6600 / 6600M specifications

General

Frequency coverage
Receive	0.0300 ~ 54.0000 MHz
Transmit [1]	1.8 / 3.6 / 5.3 / 7.0 / 10 / 14 / 18 / 21 / 24 / 28 / 50 MHz
Mode
CW / LSB / USB / FSK / AM / FM
Tuning step
1 Hz min

Receiver

ADC (Analog to Digital Conversion)
Sample rate	245.76 Msps
Resolution	16 Bit
RF preamplifier
8 / 16 / 24 / 32 dB
RF attenuator
8 dB
RMDR (Reciprocal Mixing Dynamic Range)
110 dB (1 KHz spaced signals) 116 dB (2 KHz spaced signals)
Spurious and image rejection
> 100 dB
Frequency stability
± 0.5ppm ± 0.005ppm/24h with GPS unit [2]

Transmitter

Output power [1]
CW, RTTY, SSB, FM	~1 to 100 W
AM	~1 to 25 W
Spurious emission
Harmonics	< -55 dBc (1.8~29.7 MHz bands) < -65 dBc (50 MHz band)
DAC (Digital to Analog Conversion)
Sample rate	245.76 Msps
Resolution	16 Bit
Carrier suppression (SSB)
< -80 dBc
Unwanted sideband suppression (SSB)
< -80 dBc
Maximum deviation (FM)
± 2.5 / 5 KHz
Audio response
100-2900 Hz default (variable 50Hz to 10kHz)
Microphone
600Ω nominal (200Ω to 10kΩ)
Antenna tuner
Impedance range	16.7 to 150Ω (1.8 MHz band) 8.3 to 300Ω (3.6~29.7 MHz bands) 16.7 to 150Ω (50 MHz band)
Minimum operating power	10W (1.8~29.7 MHz bands) 2W (50 MHz band)

Features

Memory
Unlimited memory channels
Display
1 Hz frequency resolution 8-inch 1920x1200 WUXGA touch sensitive LCD
Antenna
2 x SO239 50Ω 2 x BNC 50Ω RX only
Power supply
13.8VDC (± 15%)
Power consumption
2A, RX typ 23A, TX max power
Audio power
21mW on 16-32Ω headphone 2.6Vpp@10kΩ for external speaker
Audio output
Jack 3.5 mm headphone Jack 3.5 mm external speaker
Connections
USB x 2 LAN (Ethernet 100/1000 BaseT) HDMI (external display) 25-pin Jack (accessories) Jack 3.5 mm (CW key) Jack 6.35 mm (balanced audio input) RCA (10 MHz reference input) RCA (PTT) RCA (TX Request) RCA (ALC) RCA (Remote On) RCA (TX1) RCA (TX2) RCA (TX3) BNC x 2 (XVTR transverters) SMA (GPS antenna input) SMA (10 MHz GPSDO reference output)

Mechanical and environmental data

Operating temperature
from 0°C to +50°C
Dimensions
355 (W) x 178 (H) x 305 (D) mm
Weight
5.0kg

The radio are also capable of very low power (0 dBm typ, +10 dBm max) transmit on transverter port output from 100 KHz to 54 MHz.
The GPSDO option (GPS locked) unit is request.

FLEX-6600 / 6600M description :

The FLEX-6600 (PC controlled box) and the FLEX-6600M (stand-alone rig) offers the latest direct sampling SDR technology for the advanced HF and 50MHz amateur operator. The FLEX6600M integrates all "6600" capabilities with a stunning 8-inch high resolution touch display and ergonomic controls to deliver a very high performance software defined radio with a traditional radio interface. The transceiver, with the same FLEX-6400 / M base features, add a set of contest-grade filters (7th order preselector), 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.

FLEX-6600 / 6600M features :

Dual VFO front panel control sets (only FLEX-6600M)
External HDMI compatible display support (only FLEX-6600M)
Internal 2W front speaker (only FLEX-6600M)
4 indipendent receivers / panadapters / waterfalls
2 receive only ports
2 XVTR transverter ports
155dB spectrum dinamic range at max zoom
Full duplex RX/TX operation
Full break-in QSK
Integrated remote operation
VLF (630 and 2200m) IF coverage
D-STAR with optional ThumbDV
GPS disciplined oscillator option
External 10MHz reference input
Integrated automatic antenna tuner
Continuos MARS/CAP TX coverage option
Simultaneous receive on two antennas
Syncronous diversity reception
Enhanced panadapter zoom with 1.6Hz RBW

FLEX-6600 / 6600M connections :

FLEX-6600 (left) and FLEX-6600M (right) front panel

FLEX-6600 and FLEX-6600M back panel

External 13.8 VDC power connector
Antenna 1
Antenna 2
Powered speakers socket
Morse key socket
Balanced audio input
Accessory socket
Push-To-Talk socket
TX Request socket
ALC socket
Remote On socket
GPS antenna socket (Optional)
GPS Disciplined Oscillator 10 MHz output (Optional)
100/1000BaseT Ethernet port
USB accessory socket
USB accessory socket
HDMI external display socket
10 MHz input
TX3 socket
TX2 socket
TX1 socket
RXB antenna socket
XVTR-B output socket
Microphone input socket
XVTR-A output socket
RXA antenna socket
Headphones socket
Ground terminal

FLEX-6600 / 6600M price

We have collected for your convenience the FlexRadio FLEX-6600 / FLEX-6600M sale price (US Dollar) and its trend over time. Useful to guarantee a cheaper purchase of this radio and to put it for sale in the second-hand market. Of course offers, accessories, warranty terms and conditions can lead to different figures.

Price	Date	Condition
USD 3999.00	2020-mar	Brand-new FLEX-6600 version
USD 4999.00	2020-mar	Brand-new FLEX-6600M version, with control console

FLEX-6600 / 6600M review

Your opinion on merits, defects, experiences, with this radio set is welcome. Write your review, after a technical evaluation by our staff if found suitable will be published on this page. We thank you for your precious contribution.