By Jessica Crotty
If you listen to AM radio stations at night that are just impossible to pick up during the day, chances are you’re benefiting from sky-wave propagation. Propagation is just the technical word for how radio signals travel through the air. Sky-wave propagation is the specific name given to radio waves that travel through the sky. Sky-wave propagation takes place between sunset and sunrise. It’s the flip side to the ground wave propagation used to transmit during the day.
During the day, ground wave propagation is preferable because the radiation from the sun causes so much ionization that radio signals sent into the air are absorbed into the atmosphere. When atoms in the D region of the ionosphere are ionized, you end up with free electrons and ions floating around in the air. It’s kind of like trying to walk through a room filled with dancing couples…..
Read Full Article:
Wouxun KG-UV9D Read more
MixW MixW3 is a next step on the way to the upcoming multiplatform MixW project MixW3 proposes new Telnet dialog with talk over DxCluster support and... Read more
It’s our annual ARRL Field Day issue! Click here to start reading now. ● Take a compact 20-meter vertical antenna to your Field Day site. ● Try an H... Read more
Butternut HF5B 5-Band Butterfly Beam Antenna Five popular HF bands 20, 17, 15, 12 and 10 meters in a rotatable, two element beam? No Lossy trap... Read more
Under normal circumstances, Kids Day on Saturday, June 20, would offer an opportunity for individual radio amateurs or clubs to introduce the next gen... Read more
In the 1960s, US Navy officials concocted an ambitious plan: they wanted to bury a gigantic grid of cables under roughly 41 percent of the stat... Read more
During the Sporadic E season 2017, German radiators of approval class A can again use a section of the 4 m band at 70 MHz for experiments. The officia... Read more
Recent Posts
Wouxun KG-UV9D+ ProPack UnBoxing
MixW version 3 – The next step
The June Edition of Digital QST is Now Available!
Butternut HF5B 5-Band Butterfly Beam Antenna
Kids Day in the Age of COVID-19
Why the US Navy once wanted to turn Wisconsin into the world’s largest antenna
70 MHz: BNetzA allows operation in Germany
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fwhy-am-listening-is-better-at-night%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
![Fldigi v3.23.21 now available [ Free Download ]](https://qrznow.com/wp-content/uploads/2017/02/fldigi_Main_Pic-265x168.png)
