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Low bandwidth disaster recovery mesh (view source)
Revision as of 16:47, 7 May 2013
, 16:47, 7 May 2013no edit summary
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software implementation of data over radio using USRP: | |||
(missing python scripts can be found on archive.org) | |||
http://www.wu.ece.ufl.edu/projects/wirelessVideo/project/GNU_Radio_USRP/ | |||
transmitting hardware (soundcard Left and Right for I/Q out to this thing) | |||
http://www.na0tc.org/Homebrewing%20a%20HF%20Software%20Defined%20Radio_Final_pdf.pdf | |||
actual transmitter schematic: | |||
http://yu1lm.qrpradio.com/HAM%20HF%20SDR%20TRANSMITTER%20YU1LM.pdf | |||
http://yu1lm.qrpradio.com/FINAL%20HF%20SDR%20RECEIVERS%20TRANSMITTER%20YU1LM.pdf | |||
programmable frequency generator: | |||
https://www.sparkfun.com/products/9089 | |||
high frequency capable 4066 chip from mouser for above transmitter: | |||
http://www.mouser.com/ProductDetail/NXP-Semiconductors/74LVC4066PW118/?qs=sGAEpiMZZMvjbjwkTuU2aWr3jA9LyhiebMD5MB9f6DQ%3d | |||
that chip could be used in the same schematic from my previous link by yu1lm to be able to transmit at higher frequencies, probably up to about 200MHz | |||