linux Archives - Page 4 of 8

Qthid Funcube Dongle Controller

February 20, 2011 by Alexandru Csete

Qthid is simple cross platform controller application for the Funcube Dongle Pro and Pro+ software defined radio receivers. It is written using the HID API library and the Qt GUI toolkit. It is a fork and evolution of the qthid002.zip package by Howard Long, G6LVB, available on the Funcube Dongle download page. Qthid is free … Read more

Funcube Dongle with Quisk SDR

February 12, 2011 by Alexandru Csete

Today I have spent some time trying the Funcube Dongle with Quisk SDR. The setup procedure was quite painless and the results very satisfactory: Using an Arrow II hand-held yagi connected directly to the FCD I could receive the HO-68 CW beacon with very good SNR.

Improved search in the Gpredict saetllite selector

August 23, 2016February 9, 2011 by Alexandru Csete

Charles AA1VS has done some cool tweaking to the search functionality in the Gpredict satellite selector. Check out the video below to see how it works.

CuteSDR – Open source SDR for Linux, Mac and Windows

August 23, 2016February 1, 2011 by Alexandru Csete

It looks like Moe Wheatley, AE4JY, is working on a cross platform software defined radio receiver intended for SDR hardware from RFSPACE. It is written using the Qt toolkit and will be available soon under an open source license with the purpose of providing an SDR interface program example for other developers. It is still very early and no code has been released yet, but you can watch this first demo video published few days ago and you can also join the CuteSDR Yahoo group if you are interested in following the project.

Test driving Quisk SDR

August 23, 2016January 18, 2011 by Alexandru Csete

Before getting my hands all dirty with adding UHD driver to Quisk, I decided to take it for a test drive using some pre-recorded samples. I have used a 250 ksps recording of the HO-68 / XW-1 linear transponder downlink that I have recorded on November 9, 2010 using the USRP and the RFX400 daughterboard.

Quisk – A software defined radio for Linux

January 14, 2011 by Alexandru Csete

Few days ago I learned about the Quisk software defined radio application for Linux. It is written by James Ahlstrom N2ADR with contributions from other radio amateurs around the world. A quick glance at the home page and the documentation suggested that it is a rather simple application where it is easy to add support for other hardware.

Filter design and analysis in Linux

August 21, 2016January 10, 2011 by Alexandru Csete

I was reading an article in the Danish hamradio magazine about a 1.8 MHz to 70 MHz SDR transceiver. In particular the RF frontend caught my attention because a set of band pass filters and a pre-amp would be a very useful companion for the USRP+LFRX, as would a power amplifier and a set of low pass filters be for the LFTX.

Replace Shotwell with F-spot as default editor

August 23, 2016December 25, 2010 by Alexandru Csete

As you may already know, Ubuntu 10.10 ditched F-spot as default photo organizer in favor of Shotwell. Now, Shotwell may be a better photo organizer than F-spot – I can’t comment on that since I do not use any of these apps for organizing – it does have at least one very significant flaw that … Read more

Ubuntu 10.10 on the Acer Aspire 5745G Laptop

August 21, 2016October 20, 2010 by Alexandru Csete

Now that Ubuntu 10.10 is out I am slowly upgrading my computers one by one. Today it was time to perform the upgrade on my newest (in terms of technology) and most bad ass computer, the Acer Aspire 5745G Laptop. I have previously written about running Ubuntu 10.04 on it, which was the first Linux OS I have installed. Already with Ubuntu 10.04 everything was working and only the Ethernet interface required manual installation of driver. Installing Ubuntu 10.10 was a simple matter of performing the upgrade from within the package manager.

Gumstix OVero Fire and Tobi after the crash landing

August 21, 2016October 11, 2010 by Alexandru Csete

The connectors on the Tobi expansion board got broken during the crash landing As I mentioned last week, the Gumstix Overo Fire COM and the Tobi expansion board looked surprisingly well after the crash landing of the failed rocket. Yesterday, I have had a chance to take a closer look at the boards and see what damage has occurred to them. Once I separated the two boards from each other it was obvious that the 70 pin AVX connectors were damaged on both board. The electrical connections on the Gumstix Overo Fire are still OK despite the damaged connector, but the Tobi board got damaged beyond repair (PCB tracks ripped off). Below you will find some close-up photos and a video about the damaged connectors.