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faq [2015/08/13 22:42] c [I would like to start experimenting with SDR but do not have a rad1o badge (yet)] |
faq [2016/01/10 17:40] (current) adlerweb Unable to get any signal |
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== I would like to start experimenting with SDR but do not have a rad1o badge (yet) | == 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 our patched version of [[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. | + | 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 |}} |