Good day! I want to present three large projects, each of which is an independent unit of SDRs, which does not require the use of a PC. The first project is the HF radio Peony-DSP (Pion-DSP). The receiver is able to receive in the frequency range 50kHz-30MHz, modulation types - AM, FM, SSB, CW. The receiver has many features such as AGC, NB, auto notch filter, squelch shift. Image Rejection of reception - 70 dB, is automatic software. The presence of five filters with different widths for each type of modulation: AM, FM: 10 kHz, 8 kHz, 6.5 kHz, 5 kHz and 4 kHz; SSB: 3 kHz, 2.7 kHz, 2.5 kHz, 2.2 kHz, 2 kHz; CW: 1,5 kHz, 1 kHz, 0.5 kHz, 0.3 kHz, 0.2 kHz. Squareness digital filters used by the level of -3 dB / -60 dB - better than 1.1. A first embodiment of the receiver has been completely assembled at home and consisted of five boards: - System board; - DDS on the AD9952; - SDR board analog receiver; - Codec board with CS4221 with ULF TDA2822; - LPF board. To connect to a PC via an interface USB. In further developed variant, consisting of one board. The receiver does not require a PC, it is a completely self-contained. Photos of the receiver can see the link http://www.cqham.ru/forum/showthrea...D-DSP-%F0%E0%E4%E8%EE%EF%F0%E8%B8%EC%ED%E8%ЕА Video of the receiver http://www.youtube.com/watch?v=SnEoctM3NWI http://www.youtube.com/watch?v=pizf9P7DhLE http://www.youtube.com/watch?v=Ti2W_bcJGXs http://www.youtube.com/watch?v=Wz4QUA_q39Y http://www.youtube.com/watch?v=Ti2W_bcJGXs The receiver has collected several dozen people.