VK4ZXI

Low cost spectrum analyser/scanner software for the Airspy and RTL-SDR Introduction It is not often I am amazed at new technology, especially for free, but the Spectrum Spy software, a spectrum analyser/scanner for the Airspy SDR, impressed me. It is a poor man's spectrum analyser. However, it is preceded by at least two spectrum scanners for the RTL-SDR hardware; rtl_power and RTLSDR Scanner . This post will compare the two devices and three software packages, scanning the entire FM band and the 100 MHz of the local TV band. The software The three programs all run under Windows, Windows 10 in my case. All three installed and ran without much difficulty. Spectrum Spy is part of the SDR# software package. It is a separate program to SDR#, but in the same folder. Spectrum Spy has a spectrum and a waterfall. It updates every few milliseconds, depending on the span. Spectrum Spy only works with the US$199 Airspy. I have a V1 Airspy. RTLSDR-Scanner is a stand-alone prog...

I am setting up a DVB-T tx on the atv channel on 70 cm. I am using a UT-100c USB dongle http://www.hides.com.tw/product_eng.html   http://www.idealez.com/hides/product-detail/en_US/69859 . It is only US$169 and produces 1 mW of DVB-T output. The software is at https://drive.google.com/folderview?id=0BzoVnSl8XNdQMmZPbDhEczA2RjA&usp=shar ing . There are some pdfs of the device and how the software works.   To use the dongle, only the windows driver and PC2TV are needed. With PC2TV, only the video works at the moment. PC2TV takes a deal of setting up but will work with a PC/laptop webcam.   Only the UT-100C dongle is needed to start. Some ordinary domestic DVB-T receivers can be used.  The DVB-T channels in Australia are 7 MHz wide, the same as free to air TV. As such, the standard Australian DVB-TV settings can be used. At 1 mW, it is possible to xmit on a free commercial channel and tune a TV to it, without causing any dramas. How...