DL2SDR. The MacPorts Project -- Home. Portable TV, Portable Freeview TV, Portable Digital TV, Handheld TV, Music Clock Radio. What to expect from your FCD | FUNcube Dongle. I’ve had some questions about the FCD and spikes on the passband. Out of the box, like all zero IF direct conversion analogue mixer SDRs, incuding the FCD and the Softrock, there are two tweaks that immediately come to mind. Firstly there’s the DC offset which you’ll find in the middle of the SDR’s passband, and secondly there’s the image rejection. By adjusting these settings, you can null out the DC offset and image signals. The pictures shown here are deliberately shown without any DC or image corrections so that you can compare your own unit. Below you’ll see marker 1 on the right as the main signal, in the middle is the DC offset marker 2, and marker 3 on the left is the signal image.
Using Spectravue the DC offset and image rejection are corrected in the SoundCard In Setup menu item, but it’ll vary depending on the SDR software you’re using. When you have strong signals in the receiver’s pass band you will see the noise floor rise. Howard. Digital Confections. Index of /fredkrom/IQData. Softrock Software Defined Radio Homepage (www.wb5rvz.com) Software Defined Radio This site is devoted to the area of Software Defined Radio (SDR), more specifically, the "Softrock" series of technology sampler kits and the GenesisRadio.Com SDR transceiver. These kits are for working amateur radio HF receivers and transceivers. These kits have provided an economical, relatively risk-free, and exciting entry into the SDR tent.
This site describes the kits and their availability and is intended to help newcomers who have absolutely no SDR experience ease into the topic with "Heathkit-Like" build instructions and easy-to-digest theory explanations. Frequently Asked Questions Bob KC4UAI maintains a very informative FAQ page in the files section of the Yahoo Softrock40 User group (you must be logged into that group to see the file). New WB5RVZ SDR FAQ page is being set up to capture issues that have been raised in the Softrock40 group (to compensate for the abysmally poor search capability in the Yahoo Group architecture).
Softrock Kits - an Overview.