Tagged: sdrsharp

New SDR# User Guide Available

Paolo Romani IZ1MLL has recently created a SDR# users guide document which comprehensively explains all the features and settings available in the program. SDR# (aka SDRSharp) from Airpsy.com is designed for Airspy SDRs, however it is one of the most popular SDR receiver programs used with RTL-SDRs as well.

Paolo's guide appears to build on our own guide at www.rtl-sdr.com/sdrsharp, providing new information and updates since many changes and new features have been released in SDR# since we wrote that guide a few years ago.

The guide can be found on the airspy.com/download page and is available in English, Italian and Spanish.

SDRSharp Guide

A Few More Demonstrations of the SDR# FM and AM Co-Channel Cancellers

Over on YouTube a few more videos showing the new AM and FM co-channel cancelling algorithms available in recent versions of SDR# have been uploaded. In the first video YouTuber channel "Peter .DXChannel" shows an example of broadcast FM Sporadic E signals (temporary long range reception due to Tropospheric ducting) being recovered with the FM co-channel canceller.

A demonstration of the SDRsharp FM Co Channel Canceller with Es signals

In the second video "icholakov" shows the AM co-channel canceller recovering a weaker signal being broadcast directly on top of a stronger one (zero carrier offset).

SDR Sharp Co-channel interference AM canceller. Several tests using Airspy HF+ Discovery

Running SDR# On Ubuntu 20.04 Linux via WINE

SDR# is a very popular Windows SDR program often used with the RTL-SDR and Airspy SDR. One drawback is that it lacks native Linux compatibility. In the past it has been possible to run SDR# via WINE, however some newer updates were thought to have broken that ability. WINE is a Windows emulator that allows some Windows programs to run under Linux.

However, recently on Twitter we've seen a Tweet by @albinstigo indicating that SDR# can indeed run on Ubuntu 20.04 via WINE 5.0. In a Tweet he explains the steps which are quite simple:

  1. Install WINE via apt.
  2. Install dotNET 4.8 via winetricks.
  3. Install the Verdana font via winetricks.
  4. Enjoy SDR

One limitation is that the emulated SDR# cannot connect to the SDR natively via the USB. So you will need to use TCP server software such as rtl_tcp or SpyServer to get it to work. Basically, run the server on the native Linux environment, then connect to it in SDR# running on the emulated Windows environment.

SDR# FM Co-Channel Canceller Added

A few days ago the developer of SDR# added a very useful AM Co-Channel canceller plugin, and just today he has also added a new FM Co-Channel canceller. A Co-Channel canceller allow a user to remove an interfering station, allowing a buried station to be received cleanly. This is especially useful for DXer's where strong local and weak distant overlapping stations are likely to be received at the same time. The plugin works with all SDR# compatible SDRs including the RTL-SDR.

On a related note, we wanted to point out that recently the Airspy website and downloads have been getting flagged by some antivirus software, however we believe these detections to be false positives caused by the very frequent update schedule of SDR#.

SDRSharp FM Co-Channel Canceller

Over on Twitter we've seen a couple of videos from @K7al_L3afta demonstrating how well the new FM Co-Channel canceller works.

SDR Sharp Slicer Now Supports RTL-SDR and other SDRs

Youssef, Author of the SDR# software has recently updated SDR#, now extending the Sharp Slicer functionality which we posted about earlier to RTL-SDR and other supported software defined radios. The latest version of SDR# can be obtained from the Airspy Downloads page as usual.

This feature allows SDR users to open multiple instances of SDR#, each able to tune to a seperate signal within the currently tuned frequency range of the SDR. This is somewhat similar to the old multi-VFO plugin from rtl-sdr.ru, however the advantage of Slicer is that you can have seperate spectrum and waterfall graphs for each signal.

Other recent changes include 'true dBFS' automatic scaling, where 0 dBFS now indicates that the ADC is likely saturated.

SDR# Sharp Slicer Monitoring 5 Broadcast FM Stations Simultaneously.

Testing Sharp Slicer: Multiple Spectrum Slices via SDR# with an Airspy SDR

Youssef the author of SDR# has recently released an update which adds a feature called "Sharp Slicer". This feature allows Airspy SDR users to open multiple instances of SDR#, each able to tune to a seperate signal within the currently tuned frequency range of the SDR. This is somewhat similar to the old multi-VFO plugin from rtl-sdr.ru, however the advantage of Slicer is that you can have seperate spectrum and waterfall graphs for each signal. This could be especially useful for monitoring multiple narrowband HF modes with an Airspy HF+ Discovery. 

To use Sharp Slicer you must have an Airspy SDR, be it an Airspy Mini/R2 or HF+/Discovery. Unfortunately it will not work with RTL-SDR or other SDRs. Once the SDR is running in SDR#, simply press the "+" button on the top left to open a new Slicer instance. It seems possible to open as many instances as you want, and probably the only limitation is your CPU. On our Intel i7-6700 we tested up to 8 instances running at the maximum bandwidth of an Airspy Mini, and the SDR# CPU utilization was only at 50%.

A nice touch is that you can also see the location of each VFO on the master SDR# instance, and the color can be changed on each Slicer instance.

Over on Twitter @ea3ibc has also been testing:

SDR# 1717 Officially Released: Dark Mode and Other Skins now Available

Release 1717 of the popular SDR# software that is commonly used with RTL-SDR dongles has just officially been released (actually already up to r1722 at the time of this post). This release brings with it UI theme customization including a very nice looking dark mode. Over on the Airspy/SDR# groups.io board programmer Youssef wrote:

We are pleased to announce the release of SDR# r1717 with the Telerik User Interface.

This is quite a big jump from the old UI components that will allow us to add many fancy features in the upcoming revisions.
For now, the functionality of the software was ported "one to one" with full support of the existing plugins.
A new Plugin API for the tool bar was added which allows plugin developers to add/remove special buttons for quick access.

Despite a slightly longer loading time at the startup of the application, many performance improvements should be noticed in run time, especially the CPU usage.
The package is now distributed with a set of skins/themes you can select in the control panel under "Display". Later on, we will add custom skins loading capability so you can customize the look and feel of the whole program.

Please note that some themes have slower rendering than others. You will have to experiment until you settle with something that is acceptable for the eye candy and the CPU usage / UI reactivity.

Some older plugins may not support the "Dark" themes and will have some rendering problems. The last unskinned version of SDR# will be still available for download in case you really need it. In any case, plugin developers are invited to support the new skins by either using Telerik UI components or at least setting the display properties of the old components so they render properly.

SDRSharp Dark Theme
SDRSharp Dark Theme

SDRSharp Community Plugin Package Now Available

The SDR# developer in conjunction with Rodrigo Pérez have recently endorsed and released a "community plugin package" over on the SDR# downloads page. This consists of a SDR# installer that automatically downloads and installs a whole plethora of SDR# plugins.

In addition to the plugins it also automatically installs the RTL-SDR drivers, and the RTL-SDR (R820T) special interface which has the ability to use decimation and has individual controls for each of the three gain stages. You can also use it to automatically install the LimeSDR and PlutoSDR interfaces.

The .exe is a simple installer and you can select what plugins you want during the install. The installer automatically puts the SDRSharp folder in the C: drive.

SDRSharp Community Plugin Package
SDRSharp Community Plugin Package

The plugins included are:

  • Base Windows SDR Software Package (same as above)
  • Plugin Audio Processor
  • Plugin Audio Recorder
  • Plugin AUX VFO
  • Plugin Avia band 8.33 calculator
  • Plugin Baseband Recorder
  • Plugin Calico CAT
  • Plugin CTCSS decoder squelch
  • Plugin DCS decoder squelch
  • Plugin DDE Tracker
  • Plugin Digital Audio Processor
  • Plugin DSDtcp
  • Plugin File Player
  • Plugin Frequency Lock
  • Plugin Frequency Manager
  • Plugin Frequency Scanner
  • Plugin Gpredict Connector
  • Plugin IF Processor
  • Plugin IF Recorder
  • Plugin Level Meter
  • Plugin LimeSDR
  • Plugin Meteor Demodulator
  • Plugin MPX Output
  • Plugin PAL/Secam TV
  • Plugin Pluto SDR
  • Plugin RTL-SDR 820T
  • Plugin SDRSharp Net Remote
  • Plugin Time Shift