On these pages you can see pictures of the amazing SDRMAXII software. Briefly, SDRMAXII.exe is the graphical user interface which communicates with QS1RServer.exe over three UDP ports. QS1RServer.exe controls the QS1R Versatile Radio Board (VERB), a Software Defined Radio developed and produced by Phil Covington. Both GUI and Server can, of course, run on the same computer, or they can be on the same Local Area Network. They can even be as far apart as the furthest extremes of the Internet! For more information on the product, check the QS1R VERB main site.

To view a larger, less compressed image, just click the picture (this applies to most pictures on these pages).

I will try to keep up with developments in the SDRMAXII software and present the latest screen shot of my QS1R as the first picture on this page. This picture shows the slightly different button layout and colour scheme of version 1.0.0.32 alpha. It also shows rather a lot of activity on the 80 Metre band. Actually, this one is not of my QS1R, but Cathy's. :)

A new feature added to version 1.0.0.24 on 7/05/2008, was 'Markers'. Two of which can be seen in the panadapter area of the picture, but what doesn't show up particularly well in a static image, is that they are constantly updated! They move up and down with the signal strength of the signal received at the marker frequency and the dBm level is shown for each marker in the white text at top right. The marker positions can be edited in the Markers.txt file.

The picture above shows the QS1R displaying its entire frequency range of 50MHz. Several scanning widths are available from 50kHz to 50MHz. The two thin green stripes, at the far left of the waterfall display, are the long and medium wave broadcast bands! Not a lot of activity above 15MHz at the time, but come back in about five years, at sun spot max, and it will look quite different. The green lines which look a bit like staples in the pan display are band markers. The positions of both band markers and spot frequency markers can be changed by editing flat text files.

This picture shows the actual size of the GUI at its smallest. The window is resizeable right up to full screen.

Here you can see a fair few amateur radio transmissions near the high frequency end of the 80 Meter band. In the latest versions of SDRMAXII it's very easy to tune to one with a single click of the left mouse button. With single click snap mode engaged one need only be within the tuning step value. As with most features of this very intuitive radio interface, it's easier to do than to describe, but there are three modes of left click tuning available in the panadapter display area. In the default mode, click and drag from anywhere to slide the required signal into the (shaded central) filter section. To engage single click tuning, simply right click once and the cursor changes to a long crosshair. Now you can click anywhere (in the panadapter display) to tune to that precise frequency. A second click of the right mouse button engages 'click snap tuning'. Now a single right click will tune close to the position at which you clicked, snapped to the value set as the tuning step. A third right click will change the mode back to the default.