the last Winrad Release v1.6.1 (22 Feb. 2010)
see below for details

Welcome to

by Jeffrey Pawlan, WA6KBL

Winrad is a free amateur radio program conceived by Jeffrey Pawlan, WA6KBL, and written by Alberto, I2PHD, that implements many Software Defined Radio (SDR) functions which are needed for weaksignal reception including EME, troposcatter, cloudscatter, and very long distance microwave terrestrial contacts. It also works well for general HF reception.

Winrad will accept input from any Windows soundcard, from Virtual Audio Cable, or direct digital input from several SDR receivers which have appropriate drivers written for Winrad in the form of a DLL plus support files. These files must be installed in the Winrad progam directory in order to run. You must do all installation and run Winrad with Administrator privileges.

Alberto, I2PHD wrote the code from its beginning until retiring from it in Oct, 2008. Jim Austin and Charles Buse helped from 2008 - 2010. We do not have any programmers at this time. If you are interested in helping, note that you will need to use the Borland/Codegear/Embarcadero IDE version 2007. Please contact Jeffrey Pawlan.

If you start from the original source code and make a new program that is not part of this project, please do not call it Winrad as this name is my own creation and the program Winrad will remain on this website which I own.

You may contact me, Jeffrey Pawlan (WA6KBL) at (jpawlan at yahoo dot com)

Jeffrey & Alberto

All recent versions of Winrad run under Windows 2000, XP, Vista and 1.6.1 has been tested on Windows 7 (32 and also 64 bit) with a Perseus. An earlier version v1.23 is also provided because it will still run under Windows 98SE. There are problems with Windows 10.

Discussion Group

The yahoo discussion group for Winrad has been inactive for a long time so it will be discontinued.

New changes and fixed in the new version 1.6.1

OmniRig working very well now

The last radio used is saved so when you start Winrad again your radio will be automatically selected.

The last state of the I/Q mode is stored so if you use I/Q swapped, Winrad will remember that and come up with this selected.

The issue of the Internationalization: use of "." or "," decimal fraction separators depending on country has been fixed.

New: you may adjust the parameters of the AGC buttons by right-clicking on them. A pop-up window will appear and you can change the values. Slow and Fast AGC are separate except for one common parameter. Note that you can "break" Winrad by moving the values too far. You must have the Threshold slider up most of the way or perhaps all of the way to really hear the effects of the AGC.

Keyboard Shortcuts

Keyboard CommandFunction
Cchange LO so that received frequency is at center
Hshows GUI for external hardware (if it has one)
Uchange unit (cycles through Hz, kHz, MHz)
Zsame as pressing the ZAP button
ctrl Aswitch to AM mode
ctrl Bsame as pressing Noise Blanker button
ctrl Cswitch to CW mode
ctrl Dswitch to DRM mode
ctrl Eswitch to ECSS mode
ctrl Fswitch to FM mode
ctrl Lswitch to LSB mode
ctrl O enter LO frequency value from keyboard
ctrl Psame as pressing CW Peak button
ctrl R same as pressing N. Red. button
ctrl Tenter tune frequency value from keyboard
ctrl Uswitch to USB mode
Arrow Upchange tune frequency by 0.1 kHz
Arrow Downchange tune frequency by -0.1 kHz
Arrow Rightchange LO frequency by 10 kHz
Arrow Leftchange LO frequency by -10 kHz
Sh. Arrow Upchange tune frequency by 1.0 kHz
Sh. Arrow Downchange tune frequency by -1.0 kHz
Sh. Arrow Rightchange LO frequency by 100 kHz
Sh. Arrow Leftchange LO frequency by -100 kHz
Page Upincrease LO frequency by size of the spectrum window
Page Downdecrease LO frequency by size of the spectrum window

Downloads & Links

Important! Before installing the new version, please read this.

1. If you want to have the original version 1.32 or 1.33 on the same computer, you may, but you must do the following step:
Winrad v1.32 should be renamed to winrad132.exe so that it will not be overwritten when you install the new version. You can create a separate desktop shortcut for that. Alberto's version 1.33 is for support of the openhpsdr receiver Mercury card.
2. You must uninstall the earlier version (1.4.2 to 1.5.0) before you install 1.6.1. This is done in the Windows Control Panel using Add / Remove Programs.

Screenshot of Winrad v1.6.1