Coax Stub Filters Demystified
Unless you hold a First Degree RF Wizard rating, chances are good that coax stubs seem a bit baffling to you. They look for all the world like short circuits …read more Continue reading Coax Stub Filters Demystified
Tag Archives: Filter
Cavity Filters, The Black Art You Have A Chance Of Pursuing
A tuned circuit formed by a capacitor and an inductor is a familiar enough circuit, and it’s understood that it will resonate at a particular frequency. As that frequency increases, …read more Continue reading Cavity Filters, The Black Art You Have A Chance Of Pursuing
Passive Diplexer Makes One Antenna Act Like Two
Stay in the amateur radio hobby long enough and you might end up with quite a collection of antennas. With privileges that almost extend from DC to daylight, one antenna …read more Continue reading Passive Diplexer Makes One Antenna Act Like Two
Bluetooth Wearable Becomes Rad Synth Controller
Once upon a time, a watch was just a watch. These days, though, smartwatches have all kinds of tricks built in, from heartrate sensors, to accelerometers, gyros, and tons of …read more Continue reading Bluetooth Wearable Becomes Rad Synth Controller
No Inductors Needed for This Simple, Clean Twin-Tee Oscillator
If there’s one thing that amateur radio operators are passionate about, it’s the search for the perfect sine wave. Oscillators without any harmonics are an important part of spectrum hygiene, …read more Continue reading No Inductors Needed for This Simple, Clean Twin-Tee Oscillator
A Practical Open Source Air Purifier
In the years since the start of the coronavirus pandemic, it’s fair to say we’ve all become a lot more aware of the air quality surrounding us. Many of us …read more Continue reading A Practical Open Source Air Purifier
How to use html encoded characters to perform XSS?
I am trying to perform XSS but to get out of the context and write the payload I need to use Angle brackets and the angle brackets are html encoded. I tried double encoding technique with url encoding+html encoding, url encoding+url encodi… Continue reading How to use html encoded characters to perform XSS?
For XSS what Quotation marks can be used?
I’m looking for a list of some (or if possible all) of the different Unicode variations of quotation marks that browsers actually interpret in HTML/JS that would let me break out of a method and deploy an XSS payload. The closest I can fin… Continue reading For XSS what Quotation marks can be used?
Sailor Hat Adds Graceful Shutdown to Pis
Even though Windows and other operating systems constantly remind us to properly eject storage devices before removing them, plenty of people won’t heed those warnings until they finally corrupt a …read more Continue reading Sailor Hat Adds Graceful Shutdown to Pis
Clean Water, From a Plant-Based Filter
If you’re an outdoors person, one of the earliest things you learned was probably that in-field water sources can’t always be trusted as drinkable. A clear mountain stream could have …read more Continue reading Clean Water, From a Plant-Based Filter