my SDR qrp FA-Line
10W all band transceiver
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The FA Line includes 3 boxes : the SV1EIA usb sound card USB2SDR, a special card made to optimize SDR performances, the FA-SDR rf hardware and a 10W amplifier qrp pa2008 with its filters.
As a computer, I now use a "all in one" small Shuttle X50 with an Atom 550 CPU, without fan, low power, and insensitive to the HF. SV1EIA has built the right installation procedure to use Power-SDR-IQ_USB2SDR on this CPU -ask him on the yahoo group for the latest release- (std usb2sdr download page for W7) Instructions from wb5rvz here.
The only difficulty with that kind of setup is to find the right adjustment for a nice modulation. The low performance of the atom cpu makes the audio treatment really poor and probably introduces some distorsion and noise...nothing is perfect, and I am not interested in high fidelity audio as a lot of ham radio likes to do now....
| USB2SDR :
the USB2SDR card is installed inside a Teko Tekam 33.9 aluminium box ( this box accepts a 102 mm wide pcb ) (ordered from Electronic diffusion in France) At the back are the I/Q in and out cables and the usb link to the computer. On the front, we find the headphone plugs, a microphone plug and a PTT push button. See the yahoo group about this unit and the software modified by Christos to run this card with most of the SDR hardwares. http://groups.yahoo.com/group/powersdr-iq/ and the famous http://www.wb5rvz.com/usb2sdr/ doc on line |
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| FA-SDR-TRX kit from DL2EWN, sold by Funkamateur (www.box73.de), under following references :BX200 ( TRX ), BX202 ( 1W amp ), BX-026 (synthetiser with Si570 :FA-SY1), and BX-201 ( box : FA-Gehäuse zum FA-SDR-TRX) for a total cost around 240 Euro. This kit gives a 1 W SSB, CW, PSK, WSPR & co... ALL HF BANDS TRX from 160m to 10m, may be 6m ( didn't test) without any change of filter or any card |  |
| AMPLIFIER : 10W amplifier may be bought as a kit from DL2FI on QRPproject http://www.qrpproject.de/UK/qrppa2008.html - easy to build and tune, it will work at first start. The filter pcb is from the same source, to which I have added a 30 Mhz low pass filter as the kit has no filtering over 21Mhz. The box has been ordered to the supplier of the FA-SDR kit. ( Fischer Elektronik GmbH & Co. KG) ref FR120-42-160-ME-SO for 18 €. |
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