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<body class='hmmessage'><div dir='ltr'>I am releasing to the public via GPL an RTL to HPSDR software<br>translation server.<br><br>Hosted on https://github.com/n1gp/rtl_hpsdr<br><br>Screenshots listed and end.<br><br>README:<br><br>It currently builds and runs on Linux. It identifies and uses up to<br>seven (theoretically eight) USB RTL2832U-based DVB-T dongles. The<br>dongles can be set up with an up converter or use RTL direct-mode<br>for HF receive. Or direct input to provide it's native > HF receive<br>range.<br><br>The program can be passed in a variety of command line options.<br>One of which is a frequency offset not only for up converter use<br>but also to allow a full range of frequency options to HPSDR programs<br>that are coded to only allow the real HPSDR radio's (i.e. Hermes)<br>frequency range which is from 10KHz to 55MHz.<br><br>The main purpose of this program is to provide a mechanism that<br>allows RTL Dongle owners the ability to use them on HPSDR specific<br>software programs.<br><br>One such program, cuSDR64 has the ability to control and display<br>up to 7 rcvr slices simultaneously. With rtl_hpsdr, if your host<br>has the horsepower, you can run 7 RTL Dongles to emulate the HPSDR<br>rcvr. cuSDR64 also can be built and run on Linux.<br><br>Since the real HPSDR (i.e. Hermes) rcvr can do up to eight rcvr<br>slices, there is a concept of 'COPY' rcvrs in this server. This<br>would allow one to use HPSDR programs that expected more rcvrs<br>than were attached. Currently if a program request more rcvrs<br>than are actually attached the rtl_hpsdr server will make copies<br>of the last 'real' rcvr. This alows one to only have one RTL dongle<br>attached and run PowerSDR mRX which may expect up to four rcvr<br>slices.<br><br>Refer to: http://openhpsdr.org/softwareinfo.php for a list of<br>HPSDR supported applications.<br><br>I have tested this only on cuSDR64, cuSDR32, and PowerSDR mRX.<br><br>I was successful running 7 RTL dongles simultaneously on a<br>Quad core ARM Cortex A9 based mini-pc, model EKB311<br>running a version of Picuntu, http://ubuntu.g8.net/<br>This was using R820T based dongles on a USB 2.0 hub. I did<br>have to replace the USB hub power supply with one that<br>provided 5V @ 2A.<br><br>My 7 reveiver dongle setup:<br>http://home.comcast.net/~n1gp/RTL_HPSDR/7_usb_rcvr.jpg<br><br>Display of using 5 RTL dongle rcvrs with cuSDR64<br>http://home.comcast.net/~n1gp/RTL_HPSDR/5_rcvrs.jpg<br><br>This PCIE card provides 4 RTL Dongles (DigitalNow Quad DVB-T)<br>http://home.comcast.net/~n1gp/RTL_HPSDR/dn_quad.jpg<br><br>Display of using 2 RTL dongle rcvrs with PowerSDR mRX<br>http://home.comcast.net/~n1gp/RTL_HPSDR/powersdr.jpg<br> </div></body>
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