This WebSDR system has coverage on all U.S. amateur HF, MF and LF bands, 2 meters, the bottom 1 MHz of 6 meters, and several shortwave broadcast bands - see the Technical Info page for more details.

The SunSDR2 DX transceiver is the smallest 100W 160M-6M + 2M HF/VHF SDR transceiver in the world, which makes it an ideal companion for your future contests and DXpeditions. It is based on a popular, well-known SunSDR2 PRO model.

Modern SDR transceiver for shortwave, 6m and 2m VHF with excellent receiver performance. Suitable for all modes incl. CW, SSB (USB, LSB), FM, AM and digital modes. With wide band receiverfrom 9 kHz to 65 and 96 to 148 MHz. The SunSDR2-Pro, version 5, is a refined successor to the SunSDR2 transceiver.

SunSDR2 PRO is a direct sampling SDR transceiver developed for serious DXing and contesting. It covers all HF bands plus 50 MHz and 144 MHz VHF bands with a general coverage receiver. It combines high performance in a small package and has a LAN interface for maximum flexibility.

SunSDR2 DX is a direct sampling 100 watt SDR transceiver developed for the serious DX:er and contest operator. It covers all HF bands plus 50 MHz and 144 MHz VHF bands with a general coverage receiver. It combines high performance and 100 watt transmit power in a small package with a LAN interface for maximum flexibility.

The SunSDR2 PRO transceiver was designed for advanced operation on HF and VHF bands, even the most demanding operator will be surprised by its capabilities. Modern hardware along with the ExpertSDR3 software makes this high-performance SDR transceiver the perfect base station and at the same time perfectly suitable for field operations.

The SunSDR2 DX transceiver based on the well-known SunSDR2 PRO transceiver with several hardware improvements. It is a 100W-HF; 50W-6M; 8W-2M transceiver, very compact, has active cooling and improved supply system, meaning it’s perfectly suited for DXpeditions.

2019年11月13日 · SunSDR2 DX is a direct sampling 100 watt SDR transceiver developed for the serious DX’er and contest operator. The SunSDR2 DX transceiver based on the well-known SunSDR2 PRO transceiver with several hardware improvements. Like its predecessor, the SunSDR2 DX covers all HF bands plus 50 MHz and 144 MHz VHF bands with a general coverage receiver.

2019年12月25日 · 宋利教授从超高清及SDR2HDR概要、视频增强AI技术发展和HDR视频的主客观评价三个方面讲解了SDR2HDR及视频增强的AI技术研究。 HDR技术包含三个维度的提升： 亮度范围：从SDR的0.1nits-100nits，拓展到0.01nits/0.001nits-1000/10000nits。 颜色范围：从SDR的BT.709色域，拓展到BT.2020色域。 对比度：HDR视频支持10bit/12bit量化，结合更高的亮度范围与更丰富的颜色，能够提供更高的对比度，极大地提升视频观看体验。 然而，高质量的HDR …

SDR2即SDR，特别提款权。 SDR是Special Drawing Right的简称，意指特别提款权。它是国际货币基金组织IMF创设的一种储备资产和记帐单位，亦称“纸黄金(Paper Gold)”。它是基金组织分配给会员国的一种使用资金的权利。