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Ana Sayfa => Neler, neler yapmışlar! *** => Konuyu başlatan: TA5FA - 08 Ocak 2014, 22:23:49

Başlık: ADTRX-9 QRP SDR CW/SSB/DIGI Dual Band Transceiver (80-40m)
Gönderen: TA5FA - 08 Ocak 2014, 22:23:49

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 <0.5uV  for 10dB S/N ratio B=250Hz , typically around 0.2uV
5. Output power   3-5W
6. All harmonics <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

http://www.aliva-kits.com/ (http://www.aliva-kits.com/)

Başlık: Ynt: ADTRX-9 QRP SDR CW/SSB/DIGI Dual Band Transceiver (80-40m)
Gönderen: TA3EP - 08 Ocak 2014, 22:50:58

Güzelmiş. Bilgilendirme için teşekkürler. 73