Hi Vincenzo,
I'm not familiar with your particular SDR dongle, but I have used the Funcube Dongle. PPM is just 'parts per million'. It is the adjustment to compensate for inaccuracies in the crystal frequency within the dongle; it calibrates the frequency setting on the SDR/dongle.
In the US, the National Weather Service has local stations on several frequencies just above the 2m ham band...something in the 160MHz area, and that makes a good standard frequency. But you can use anything. You might start out with any FM or TV transmitter, or even your own transmitter (if you trust its frequency) and scan around to try to find it on your SDR. Then you will know which way you have to adjust your SDR so it's frequency readout is accurate.
Eventually, the higher the frequency you can calibrate on the better and more accurate the calibration will be, but start out with something easy anywhere so you can start getting closer.
73,
Burns W2BFJ
On Sun, Jun 8, 2014 at 4:07 AM, Vincenzo Mone vimone@alice.it wrote:
Hi folks I am interested to receive the satellites with the USB RTL-SDR Dongle. I found on eBay one called: I bought on eBay the DVB-T USB Stick HD/DIGITAL TV Television FM Radio HDTV. Tried to follow the instructions found on Jason's' page at:
but I get stuck on the step:
Tune into a known frequency like the National Weather Service, thisis required to adjust the PPM
Please which is the frequency of the PPM? I have tried to set the frequency on a local packet but cannot find it on the Software. Please can anybody give more help to set it in the right way? Any help will be really appreciated. Thanks for help in advance.
73's de Enzo IK8OZV EasyLog 5 BetaTester EasyLog PDA BetaTester WinBollet BetaTester D.C.I. CheckPoint Regione Campania Skype: ik8ozv8520
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