A High Altitude Balloon which uses VOR stations to navigate
A GNU Radio based VOR Station configured to transmit on HAM radio frequencies using a HackRF.
VOR Navigator is based on vortrack.
Frequency: 144.000000 MHz
Gain: 0 (when directly connecting the HackRF output to the RTL USB input via SMA cable)
Note: When using the RTL USB to track stations, the center frequency may shift due to temperature drift (wish this had a TXCO). You may need to power the RTL USB for several minutes to let it warm up, then run gqrx to find the new stable center frequency.
For rtl sdr :
$ cd vor-nav
$ make
$ cd vor-nav
$ ./vor-nav -g 0 144.00