FLEX-6700

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The FLEX-6700 is for the most demanding amateur radio operator who desires the ultimate on-air experience.  With dual spectral capture units (SCUs), the FLEX-6700 allows multiple active antennas providing reception and unprecedented spectrum visibility across up to eight panadapters and waterfalls. The FLEX-6700’s dual-stage RF preamplifiers enhance weak signal reception up through six meter and two meter bands*.  Total flexibility and the highest performance sets the FLEX-6700 apart from other radios.

*Two meter transmit power limited to -15 to +7 dBm; external power amplifier not included.

FLEX-6700 Feature Highlights

- Maximum Slice Receivers:  Eight (
- Maximum Panadapter Bandwidth:  14 MHz
- Antenna Connectors:  SO-239×2; BNCx2; XVTR-BNCx1
- Wideband Frequency Coverage:  30 kHz – 72 MHz; 135 – 165MHz
- Transmit Frequency Coverage:  160-6m amateur bands, 100W nominal output
- Transverter IF Frequency Coverage*:  100 kHz – 72 MHz; 135 – 165MHz
- Digital Audio Exchange (DAX) Channels:  Eight (
- DAX IQ Channels/Bandwidth per Channel (DAXIQ):  Four (4) @ 24 kHz – 192 kHz
- Preselectors:  160 – 2m (except 60m)
- Microphone Connectors:  Unbalanced 8-pin Foster, Balanced XLR/TRS
- Antenna Tuner Unit (ATU):  Integrated
- Full Continuous Coverage Transmit: MARS/CAP Capable

Receiver Specifications

- Receiver Architecture: Direct Digital Sampling
- Spectral Capture Units: Two (2)
- Maximum Slice Receivers: Eight (
- Maximum High Resolution Spectrum Displays: Eight (
- Maximum Panadapter Width:  14 MHz
- ADC Resolution: 16-bits
- ADC Sampling Rate: 245.76 Msps
- Wideband Frequency Coverage: 30 kHz – 72 MHz; 135 – 165 MHz
- DAX IQ Channels / Bandwidth Per Channel:  Four (4) @ 24 kHz – 192 kHz
- DAX Audio Channels:  Eight (
- Amateur Band Preselector Coverage: 160m – 6m (except 60m)
- Preamplifiers / Attenuators: -10 to +30 dB
- Spurious and Image Rejection Ratio: 100 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: 491.52 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: 1.8 MHz – 30 MHz continuous, 50 MHz – 54 MHz
- Transverter IF Output Power: +0 dBm Typical; +10dBm max (+7 dBm, 2m)
- Transverter IF Frequency Coverage: 100 kHz – 72 MHz; 135 MHz – 165 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 typical
- Harmonic Radiation 1.8 – 50 MHz Amateur Bands:  <-60 dBc; -70 dBc 6m
- Transmit Bandwidth: Default 100-2900 Hz (Variable 50-10000 Hz)
- Microphone Connectors: Unbalanced 8-pin Foster, Balanced XLR/TRS
- Microphone Impedance: 600 Ohms Nominal (200-10kΩ)

Antenna Tuner Specifications

- Matching Range 80m – 10m: 8.3 Ohms – 300 Ohms
- Matching Range 160 and 6m: 16.7 Ohms – 150 Ohms
- General Specifications
- USB 2.0 Ports (peripheral control): Two (2)
- Master Clock Frequency: 983.04 MHz
- Master Clock Phase Noise: -147 dBc@ 10 kHz; -152 dBc@ 100 kHz
- 10 MHz Reference Clock Stability: 0.02ppm OCXO
- GPSDO Frequency Stability (GPS locked): 5 x 10 (-12) over 24 hours
- Emission Modes: USB, LSB, CW, RTTY**, AM, Synchronous AM, FM
- Frequency Resolution: 1 Hz min.
- Antenna Connectors: SO-239×2, BNCx2, XVTRx1
- Antenna Impedance (w/o tuner): 50 Ohm Unbalanced

Electrical

- Power Supply Requirements: +13.8V DC nominal ±15%
- Current Drain (Receive/Transmit Max): 3A / 23A @ 13.8V

Mechanical

- Height: 4″ (10.2 cm) with feet; 3.5″ (8.9 cm) without feet attached
- Width: 13″ (33 cm)
- Depth: 12″ (30.5 cm) or 13″ (33.04 cm) with front handles
- Weight: Approximately 13 lbs. / 5.9 kgs
- Operating Temperature: 0 to +50 degrees C; +32 to +122 degrees F

Options

- 2U, 19inch (48.26 cm) Rack Mounting Kit
- Front Handle Kit (adds 1 inch/2.5 cm to total depth
- GPSDO with Rear Panel 10 MHz Reference Output

Specifications subject to change without notice.
** Requires 3rd party software.

- DataSheet Download
- Felix Radio Systems