STAR-10 transceiver

Описание: Статья с описанием, схемами и фотографиями КВ-трансивера Star-10 конструкции KW7CD (Cornell Drentea). ---- The completed Star-10 transceiver is designed to receive and transmit anywhere from 1.8 MHz to 30 MHz with a resolution of 10 Hz. It provides full cross mode, end-to-end RX/ TX Split operation with a transmitter RF power of 100 W (125 W peak). The receiver has a composite spurious-free linear dynamic range in excess of 150 dB. It exhibits an MDS of –136 dBm (absolute), a third-order intercept point of +45 dBm. A coherent DDS-Driven PLL microwave synthesizer provides close in phase noise performance of –133 dBc/Hz. Receive spurious image rejection is –75 dB and transmit harmonic rejection exceeds –55 dBc. The transceiver uses a coherent up-convert down-convert superheterodyne approach. The electrical and mechanical design features a modular approach using eighteen double sided, plated through printed circuit boards housed in machined, irradiated aluminum assemblies, all packaged in a custom made, hammer-tone finished cabinet measuring 15.5 x 6 x 11 inches.