The half-wave dipole antenna is just a special case of the dipole antenna, but its important enough that it will have its own section. Note that the «half-wave» term means that the length of this dipole antenna is equal to a half-wavelength at the frequency of operation. To make it crystal clear, if the antenna is to radiate… Leer más »
cat INFILE | sed ‘s/^[ \t]*//’ > OUTFILE
echo «::memstat» | mdb -k Page Summary Pages Bytes %Tot —————————- —————- —————- —- Kernel 2356318 17.9G 8% Defdump prealloc 375179 2.8G 1% ZFS 602721 4.5G 2% Anon 5160416 39.3G 18% Exec and libs 7942 62.0M 0% Page cache 19943103 152.1G 69% Free (cachelist) 82585 645.1M 0% Free (freelist) 569720 4.3G 2% Total 29097984 222G… Leer más »
https://github.com/pothosware/SoapyRemote/wiki
Antenna size depends on the frequency you want to hear: higher frequency (bigger number) – smaller antenna.You need an antenna that receives signals from all directions – called omnidirectional.Materials make no difference: any type of wire is good, as long as it keeps its shape. Metal coat hangers are popular, multi-stranded or solid makes no difference. I’m… Leer más »
https://github.com/mutability/dump1090 Changes required for Plane Plotter Mlat (multi-lateration) So that’s Malcolm’s version of dump1090 installed and running on your RPi. This version already incorporates the changes required for a Plane Plotter Mlat Ground Station. Run the new version of dump1090 by typing: ./dump1090 –interactive –net You should see the same display as before on the… Leer más »
https://www.hackster.io/mariocannistra/radio-astronomy-with-rtl-sdr-rpi-and-amazon-aws-iot-45b617 http://rishi-patel.blogspot.com/2013/10/summary-of-horn-antenna-project.html