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faq [2015/07/24 14:56]
mh [Standalone use by unexperienced people]
faq [2016/01/10 17:40] (current)
adlerweb Unable to get any signal
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 A: What looks like the antenna is just a design feature. ;-) The real PCB antenna is located somewhere else on the board. A: What looks like the antenna is just a design feature. ;-) The real PCB antenna is located somewhere else on the board.
  
 +== I would like to start experimenting with SDR but do not have a rad1o badge (yet)
 +
 +A: You can buy a DVB-T dongle with an rtl2832 chip (~15 Euro). They work together with  [[software#​rf_analyzer_android|RF Analyzer (Android)]] as well as [[software#​gnu_radio_linux_mac_windows|GNU Radio (Windows/​Linux/​Mac)]]. They are not capable of sending signals, but depending on the dongle they have a frequency spectrum from 64 MHz up to 1700 MHz for receiving signals, which is enough for a lot of experiments.
 == Use by unexperienced people == Use by unexperienced people
  
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 A: There probably will be several applications on the rad1o badge itself (so it can be used standalone) like an FM-receiver,​ spectrogram display, controlling power outlets etc. Look forward to the ideas creative people at the camp will come up with... A: There probably will be several applications on the rad1o badge itself (so it can be used standalone) like an FM-receiver,​ spectrogram display, controlling power outlets etc. Look forward to the ideas creative people at the camp will come up with...
  
 +
 +== Clock issues
 +
 +Q: How stable is the frequency? How much deviation should be expected?
 +
 +A: FIXME
 +
 +
 +Q: There is a clock out, whatfor is it? Why is there no clock in? 3 Hardware versions?
 +
 +A: FIXME
 +
 +== Unable to get any signal
 +
 +Q: I am unable to receive a signal. Neither my PC nor the embedded rfapp show anything
 +
 +A: If you are using a bare unit without RF-shield or a case you might have damaged the RF section. Especially the SMD coils shown below (0603USB-951 common mode choke, 63NH, 0.5A) can easily shear off.
 +{{ :​rf-coils.jpg?​100 |}}
faq.1437742594.txt.gz ยท Last modified: 2015/07/24 14:56 by mh