Designing antenna arrays with adjustable beam width, azimuth, and elevation angles.
by Jim Lux, w6rmk
http://home.earthlink.net/~w6rmk/antenna/phased/phased1.htm
Miles Davis quintet, 1967
Mac OS Wifi Diagnostics
“Wireless Diagnostics” is a builtin signal monitoring app.
Instructions:
- Press the option key and click on the Wifi icon in the task bar.
- Select “open wireless diagnostics.”
- Diagnostic screens are accessed from the Window menu.
More information from Apple: https://support.apple.com/en-us/HT202663
RF noise reduction
Notes
- PA0SIM DSP noise reduction: http://www.pa0sim.nl/Software.htm
- Roger Rehr, W3SZ – various methods: http://www.nitehawk.com/w3sz/w3szdspnew.htm
- Cedar Audio: http://www.cedaraudio.com/
- Noise reduction plugins: http://www.sonicscoop.com/2013/05/30/the-best-noise-reduction-plugins-on-the-market/
- SOS Noise reduction tools and techniques: http://www.soundonsound.com/sos/jan12/articles/noise-reduction.htm
Switched tee/doublet antenna
Ladder-line antenna tuner
Impedance matching by adding/subtracting open wire transmission line
A simple antenna tuner made from switches. How to determine the “best” transmission line lengths for multi-band center fed wire dipoles.
by Cecil Moore, W5DXP
http://www.w5dxp.com/notuner/notuner.htm
Superformula
Formula generator
“The superformula is a generalization of the superellipse and was first proposed by Johan Gielis in 2003″
from Wikipedia
http://mysterydate.github.io/superFormulaGenerator/
Some superformula samples
Shadows
by tomthefnkid
TensorFlow
Google’s Open source “deep learning” engine.
By Cade Metz at wired.com
http://www.wired.com/2015/11/google-open-sources-its-artificial-intelligence-engine/?mbid=social_fb
PiTX
Transmitting FM, AM, SSB, SSTV and FSQ with a Raspberry-PI
By @F5OEOEvariste (article at: rtl-sdr.com)
http://www.rtl-sdr.com/transmitting-fm-am-ssb-sstv-and-fsq-with-just-a-raspberry-pi/