FLEX-3000 Transceiver Specifications

FLEX-3000 Transceiver Specifications

System Dependencies
Minimum PowerSDR Version:
Applicable Hardware:   FLEX-3000 

Content provided by: FlexRadio Systems Engineering


Rx Frequency Range:

10 KHz - 60 MHz

(Customer provided preselector or appropriately selected low pass filters required to eliminate images when used below 1.8 MHz)

160 - 6 m (specified performance, Amateur bands only)

Transmitter Frequency Range:

160 - 6 m (Amateur bands only)

Frequency Stability:


Ambient Operating Temperature Range:

14 °F to 122 °F (–10 °C to +50 °C)

Emission Modes:

A1A (CW), A3E (AM), J3E (LSB, USB), F3E (FM),


Frequency Steps:

1Hz minimum

Antenna Impedance:

50 ohms

Power Consumption:

Rx 1.5A (typ.); Tx (100 W) 25A (max.)

Supply Voltage:

DC: DC 13.8 V ± 10%

Maximum Interconnect Cable Length:

Firewire - 10 feet (3m),

No restriction on DC power cable within voltage tolerance limits under load.

Special EMI/RFI Requirements:

NOTE: Necessary to minimize RFI radiation from the cables attached to the radio

1 snap on ferrite bead on DC power cable,

2 snap on ferrite beads on FireWire® cable

1 snap on ferrite bead on FlexWire™ cable

All beads to be located adjacent to rear panel of radio.

FLEX-3000 Dimensions:

(WxHxD): 12.25” x 1.75” x 12.25” (31.1 cm x 4.4 cm x 31.1 cm)

FLEX-3000 Weight:

(approx.): 9 lbs (4.08 kg)


Power Output:

1 - 100 watts PEP CW and SSB (2 - 25 watts AM carrier)

Emission Modes Types:


Spurious and Harmonic Radiation:

160-10m:  -55 dB
6m: -65 dB

SSB Carrier Suppression:

Better than > 70 dB @ peak output

Undesired Sideband Suppression:

Better than 65 dB @ peak output

Audio Response (SSB):

90 Hz @ -3dB / flat to upper limit set by software, Software EQ optional

3rd-order IMD:

160-10m: -31 dB

6m: -30 dB

9th-order IMD:
160-10m: -48 dB

6m: -48 dB

Image Rejection:


Microphone Impedance:

600 Ohms (200 to 10k Ω)



Circuit Type:

Direct conversion, low IF

Intermediate Frequency:

Software selectable from DC to 20 KHz

Sensitivity (preamp off/on):

1.3 / 0.3 µV (-123/-133 dBm in 500 Hz)

MDS (preamp off/on):

-121 dBm (14.2 MHz, preamp off)

-135 dBm (14.2 MHz, preamp-2 on)

-137 dBm (50.125 MHz, preamp on)

IMD DR3 (dynamic range):

95 dB (@ 2 KHz spacing / 14.2 MHz))


Greater than +26 dBm (preamp off)
+69 dBm (Preamp off)
+45 dBm (Preamp-2 on)

Selectivity (–6 to 60 dB):

CW 500/640

SSB 2.39/2.54

AM 6.6/6.74

Image Rejection:

160-10m: 96dB or better

6m: 71 dB or better


CE Declaration of Conformity received May 2009.

Specifications are subject to change without notice or obligation, and specifications are guaranteed only within the amateur radio bands.

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Posted Tuesday, October 7, 2008 by Administrator