Flex Radio 6500 Signature Series SDR

Receive frequency coverage

30 kHz to 77 MHz Reference

Transmit frequency coverage

160 m–6 m (amateur bands only by country) + MARS; transverter IF output port: 100 kHz–77 MHz Reference

Modes

A1A (CW), A3E (AM), J3E (SSB), F3E (FM) Reference

RF output power

100 W CW/SSB/FSK/FM; 25 W AM at 13.8 VDC nominal Reference

Audio output power

Headphone output: 21 mW into a 16-ohm minimum load; external powered-speaker output: 2.6 Vpp maximum into 10 kOhm Reference

Power requirement

+13.8 VDC ±15% Reference

Current consumption

2 A receive typical; 23 A transmit maximum Reference

Frequency stability

0.5 ppm TCXO; with GPSDO option, 5 × 10^-12 over 24 hours Reference

Dimensions

With feet: 13 in W × 12 in D × 4 in H (33 cm × 30.5 cm × 10.2 cm); without feet: 13 in W × 12 in D × 3.5 in H (33 cm × 30.5 cm × 8.9 cm) Reference

Weight

13 lb (5.9 kg) Reference

Antenna impedance

50 ohms, unbalanced Reference

Sensitivity

Typical MDS in 500 Hz bandwidth, preselector off: −121 dBm / −125 dBm / −136 dBm with preamp off / 10 dB / 20 dB; 30 dB preamp: not applicable Reference

Specifications may vary by revision or market. Use linked manufacturer references when available and confirm critical details before purchase.