A short backfire, or "archery target" antenna is much larger than a single wavelength for the frequency at which it is designed. It is high gain with low backlobes but the aperture efficiency is not great. My (cheap) implementation uses thin aluminum flashing/sheet cut with metal shears and joined with aluminum brazing rods by means of a propane torch. The coaxial cable of the fat dipole feed can't handle such high temperatures. Instead it's conventionally soldered on top of a a square section of single sided copper PCB which itself is brazed on to the aluminum.
The coaxial cable on the left arm of the dipole is the actual feed. It's inner conductor reaches over to the right arm. The coaxial cable on the right feeds nothing. It's a 1/4 wave balun made out of the outer conductor of the coaxial cable.
The aluminum is suspended with saran wrap and scotch tape.
I designed this antenna for the top of the band, 5.8 GHz before I realized my own, and most, situations required a good match down near 5.7 GHz. Regardless it's worked perfectly for point to point indoor use in low signal situations. It's a bit too directional for FPV but it does work for that too when worn fashionably taped to a hat.
This prints the number of tabs in every browser session file in a directory. It reads both Opera text and binary session file formats <12.x and Firefox session files.
Type, "/@say/Your message here." after the end of any URL on my site and hit enter to leave a comment. You can view them here. An example would be, http://superkuh.com/rtlsdr.html/@say/Your message here.
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The US Dept. of Justice has determined that violating a website's terms of service is a felony under CFAA 1030(a)2(c). Under this same law I can declare that you may only use one IP address to access this site; circumvention is a felony. Absurd, isn't it?
It is my policy to regularly delete server logs. I don't log at all for the tor onion service.
I enjoy recursion, dissipating local energy gradients, lipid bilayers, particle acceleration, heliophysics instrumentation and generally anything with a high rate of change in electrical current. This site is a combination of my efforts to archive what I find interesting and my shoddy attempts to implement it as cheap as possible.
Recent Music
np: Spaceslug - Time Travel Dilemma (2017) (New Full Album)
