2018年3月1日 · A 'Ghost Box' or 'Spirit Box' is a tool used by paranormal investigators to talk with spirits via the claimed electronic voice phenomenon (EVP). Some believers in paranormal activity theorize that electronic radio devices or EM fields are susceptible to manipulation by other worldly spirits, and thus this can be used as a communications method.

Gqrx provides a live visualization of the spectrum and the ability to fine tune and control many parameters of the radio, such as gain, demodulation, squelch, and noise filtering. Ghost boxes usually scan AM or FM. By using SDR, we have a vastly larger spectrum available (though AM may require an upconverter, depending on which SDR is used.)

2016年10月29日 · A ghost box, or sometimes spirit box, is a tool used by paranormal researchers. The simpler ones are effectively radio scanners, so it seemed like a good fit for SDR around Halloween. The tool controls a Gqrx instance via the remote control protocol .

Modified Raspbian image with the latest SDR software pre-installed and ready to go. Compatible with every Pi. The PiSDR is a Raspbian based operating system for the Pi pre-loaded with multiple Software Defined Radio software. It was created to serve as a fast and reliable bootstrap for SDR projects.

2018年12月13日 · Giuseppe notes that using an Android TV box for SDR is as simple as installing the Martin Marinov Android RTL-SDR drivers from the Google Play store, and then downloading the SDR apps that interest you. No extra USB OTG cable is required, just plug the dongle into the back of the device.

发射机通过PWM控制功率放大器的电源电压实现幅度调制，通过高速I2C（800 kbps）控制时钟发生器SI5351的瞬时输出频率实现相位调制。 改进目标： 增加磁棒天线、拉杆天线、单向按钮，实现80米测向机功能。 增加CW自动发送、天线调谐器，实现80米测向信号源功能。 uSDX软件. https://github.com/threeme3/QCX-SSB/ uSDX硬件. WB2CBA和Antrak设计的单PCB、可换低通滤波器版： https://antrak.org.tr/blog/projeler/usdx-an-arduino-based-sdr-all-mode-hf …

SDR软件定义无线电可将基站信号处理功能尽量通过软件来实现，使用通用硬件平台可快速地实现信号的调制解调，编码运算，SDR为现有通信系统建设提供了全新思路，给技术研究开发降低了成本、并提供了更快的实现方式。 (引用 基于开源SDR实现LTE系统对比- doc88.com/p-98634193415) 目前一些商用平台有很多这方面的应用，像中兴、华为等一些通信厂商的一些小型基站，大疆的一些图传。 目前有很多厂商开始用SDR实现自组网，不仅安全性得到提高，而 …

2017年6月21日 · GhostSDR: An RTL-SDR Based Ghost Box for SDR# A "Ghost Box" or "Spirit Box" is a tool used by paranormal investigators to talk with spirits via the claimed electronic voice phenomenon (EVP). Some believers in paranormal activity theorize that electronic radio devices or EM fields are susceptible to manipulation by other worldly spirits, and ...

There are plugins allowing SDR# to decode various different types of broadcast but it can play AM and FM radio broadcasts out of the box. In the left hand panel, open up the Radio group. You can select one of 8 different types of broadcast to decode. The most useful are AM for normal AM broadcasts, and WFM for broadcast (wide-band) FM broadcasts.

The box contains a full set of tolls that are necessary to build a radio transmitter or receiver, pack it in a bag and enjoy listening (or transmitting) far away from civilization. Implemented in a real hacker-style, using cardboard box and a bunch of zip-ties to put all components together.