Software Defined Radio

Tobias (DH1TW)

32 minute read

Image of FlexRadio FlexcontrolI’m a believer in true knob and button radio interfaces… and I’m not the only one. A small team, formed around Stu, K6TU developed the Contest Knob, which is now today manufactured by FlexRadio Systems under the name FlexControl. In this interview K6TU reveals the ideas behind the Flex-Control and describes in detail the steps from the design to the industrial production.

Tobias (DH1TW)

1 minute read

FlexRadio Contest Knob alternative PowerSDR-UI lifts the FlexRadio experience to a totally new level. Since the first release of PowerSDR-UI an avid community is forming it selve around the project. Literally, I receive now everyday feedback from new users expressing their appreciation. In this post you will find pictures which have been provided from satisfied PowerSDR-UI users. These pictures shall inspire and help you to set up your DJ Console.

Tobias (DH1TW)

24 minute read

FiFi Software defined radio with DF3DCBThe FiFi SDR is a second generation allband HF receiver. Beside it’s QSD it comes with a onboard soundcard and a powerful ARM Cortex M-3 CPU which leaves a lot of room for experiments. I was glad to win Kai-Uwe, DF3DCB one of the FiFi-SDR founders for an interview. Curious? Then download the download the MP3 or subscribe in iTunes to my podcast!

Tobias (DH1TW)

5 minute read

At the end of last year I announced the “proof” that Software Defined Radios also can have buttons and knobs. At that stage the software was still a prototype and not ready for a public release. In the meantime I was working hard to eliminate bugs and implement further improvements. By today I’m happy to announce the release of PowerSDR-UI beta. This is a call for beta testing. Please feel free to download the software and participate in the beta testing phase!

Tobias (DH1TW)

5 minute read

DJConsole powersdr

The User Interface of computers suck when it comes to Radio Controlling. In January 2010 I got so annoyed by being forced to control the radio with keyboard and mouse that I finally decided to look for something else. Now, almost one year later I’m happy that I can present you an interesting alternative. The interface costs less than 100 USD, is commercially available and improves the overall SDR experience significantly.

Tobias (DH1TW)

1 minute read

Last weekend I was invited to speak at the Contest Universtity in Friedrichshafen, Germany. This year I tried to visualize a rather abstract topic, the influence of technologies on the art of contesting. Mainly two topics are discussed: Information Management and Software Defined Radios. How new technologies affect the art of contesting Do you like this presentation? Please leave a comment and share your opinion with us!

Tobias (DH1TW)

17 minute read

NCDXF/IARU Faros Beacon NetworkOn my ongoing search for SDR appliances, I discovered a couple of weeks ago an SDR (Softrock & Linux) based Beacon Monitoring System. The system is making use of the NCDXF Internation Beacon Project (IBP) which consists of 18 timely synchronized automated transmitters, located around the world. It monitors the signals on the various bands and generates in real-time a graphical chart showing the signal’s strength. The chart is uploaded to a webserver and accessible for everyone through the Internet. Lately I had the possibility to interview the author of the system, Atsushi (JN1SDD). In this interview he revealed with great deepness how the system is build up. I hope you will enjoy this interview as much as I did!

Tobias (DH1TW)

3 minute read

CW Skimmer wishThree years ago I added a Software Defined Radio (Softrock Clone) to the 455kHz intermediate frequency of my FT1000MP shortwave receiver. The idea was to use it as a spectrum scope in conjunction with CW Skimmer. Unfortunately the solution has one big disadvantage: I can’t use it with Win-Test my favorite Contest Software. In a detailed investigation I found out why CW Skimmer and Win-Test can not be used simultaneously with the same Radio. Now, about past 30 month later, the situation has improved. However there is still one little change necessary to finally be able to use CW Skimmer and Win-Test with (my) FT1000MP. Read in this article what has changed and what is still missing (my wish)!

Tobias (DH1TW)

8 minute read

PMSDR This week I had the pleasure to interview Martin, IW3AUT. He’s the developer and founder of the Italian PMSDR Software Defined Radio receiver. In this interview you will get a look inside a successful SDR project. You will read about the design goals, the milestones of the project, the problems which Martin encountered an how he solved them. Enjoy the interview!