In the world of amateur radio, a ladder filter is a critical component used primarily in Superheterodyne receivers and SSB (Single Sideband) transmitters. Ladder filters can be made
Building an RF transformer on a binocular (multi-aperture) core like the BN43-7051 or BN43-202 can feel like a ship-in-a-bottle project. Unlike a standard ring toroid, the “turns” here
While high SWR is often blamed for “ruining” a radio, the physical reality of why your coax gets warm involves a fascinating tug-of-war between forward and reflected waves.
That title sounds like the beginning of a high-stakes thriller, but in the world of amateur radio, it’s closer to a survival guide. Whether you are chasing DX
Drilling an aluminum heat sink is challenging because aluminum is soft, ductile, and gummy, causing it to grab the drill bit, create excessive friction, and produce long, stringy
High Standing Wave Ratio (SWR) is a common frustration when setting up or maintaining an antenna system. It indicates that power is being reflected back to the transmitter
Getting your amateur radio license is like getting a driver’s license: you’ve passed the test, and now you finally get to get behind the wheel. The “best” gear
When you’re building an antenna, you quickly realize that the math on paper rarely matches the reality on the roof. One of the biggest culprits is the Velocity
Ever since I heard of BITX radio, I have been wondering how that name came. The BITX (Bidirectional Transceiver) is called such because it utilizes a unique radio
Testing method modified from: #132: How to test MOSFETs with a DMM – a few methods… https://www.youtube.com/watch?v=gloikp9t2dA&t=106s (W2AEW). (I am using analog Multimeter instead of a digital one.
