The problem of power line noise interference with AM radio broadcasting systems has been an issue ever since radio broadcasts began, because it disrupts proper antenna impedance matching between a transmission line and AM wave radio towers. Power line noise can affect everything from radio and television reception to amateur radio, as well as communications […]
antenna system
Why are Antenna’s Made of Aluminum?
When working with AM/FM radio equipment, you may find that a lot of components, such as the antennas, are made of aluminum. It may strike one as odd, but aluminum is used more often—and more effectively—than many “stronger” metals. There are two main reasons why the lightweight metal is used for things such as antennas […]
Basic AM Radio Equipment Troubleshooting
There was a time when AM was the norm when it came to radio. Most radio stations were AM, while FM broadcasting was seen as a relatively little-known alternative. These days, the opposite is true. Most well-known mainstream radio stations are broadcast in FM while relatively few stations come in on AM frequencies. Despite this […]
How to Properly Match Antenna Impendance
When it comes to AM/FM radio broadcasting, the most pertinent aspect is the ability to transfer maximum power with minimal energy loss. Efficiency is the key. The method by which this is accomplished is through impedance matching between the target radio towers and the transmission line carrying the power. Of course, the quality of materials […]
What Features are Typically in a Directional Antenna Phasing System?
A directional antenna phasing, or matching system, is a critical part of a properly functioning antenna system. While the following quote from KOBG.com is specific to mobile antenna systems, it can apply to all RF antennas: If your mobile antenna installation doesn’t require any matching (SWR under 16:1), you either need a better antenna, a […]