Author: AD5GG

2-FSK 0

Frequency Shift Keying (FSK)

Almost everyone has heard of FM, but not everyone has heard of FSK. Frequency Shift Keying is a modulation scheme which utilizes changes in the frequency of the carrier wave to communicate data. For...

1

Why 50 ohms?

Coaxial cables, antennas, amplifier inputs and outputs, typically have either a 50 ohm or 75 ohm characteristic impedance. Why? It all comes down to the characteristic impedance value for maximum power transfer being 30...

0

Baofeng UV-5R+ Harmonics

It seems that the ARRL and a number of individuals have been taking a serious look at harmonics and other spurious emissions from various ham transceivers, including the ubiquitous Baofeng range of handheld transceivers....

0

The WryCast

  Many moons ago, Amy and I had a nowcasting website, Facebook, and Twitter page called the “Wrycast”. It was pretty cool, however, we just let it slide since we’re both busy bees. Then I...

0

Antenna Field Regions

Antenna radiation is made up of several different regions. The transitions between these regions are not distinct and changes between them are gradual. The reactive near-field region is the region close to the antenna....

Editor Picks