Παρασκευή, 17 Ιανουαρίου 2014

ADTRX-9 QRP SDR CW/SSB/DIGI Dual Band Transceiver

ADTRX-9 QRP SDR CW/SSB/DIGI Dual Band Transceiver (80/40m)
By Tasic Sinisa-Tasa YU1LM/QRP

1. Number of bands 1-4 (optional)
2. Transceiver frequency limit operation ~ 22.5MHz
3. Tuning range from 48-192 KHz with fixed oscillator or continuous tuning with external LO(local oscillator such as DDS, Si570 SDR KIT) . Useful bandwidth is dependable fromthesound card specification  used for AD conversion.

4. Receiver sensitivity :LESS THAN 0.5uV for 10dB S/N ratio B=250Hz , typically around 0.2uV
5. Output power : 3 - 5W
6. All harmonics : LESS THAN  40DBC

7. CW/SSB/DIGITAL  modulations, the basic modulation is DIGITAL which enable many long distant QSOs with small power
8. Built in 15 dB attenuator
9. IP3 >24 dBm sound card depended result which is not related to 2 tone frequency difference too much .Almost the same results for 2 -20kHz  two tone test signal difference
10. Estimate time for assembling the simplest ADTRX-9  version is around 8-9 hours
11. Power supply 12-13.8 V /1.5 A
FOR INFO&ORDER--->http://www.aliva-kits.com/

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