Hi SWLing Post lounge community, Fastradioburst23 here letting you know about the next Imaginary Stations transmission JNHK 3 to be broadcast this Sunday 21st May 2023 at 2200 UTC on 9395 kHz via the services of WRMI. After our well received broadcast last week (thank you to all who got in touch) featuring some recordings of radio in Japan, this week we will feature some Japanese related music. Tune in and enjoy! First-time listeners are more than welcome to send reception reports to [email protected] and to check out our old shows here.
The SWLing Post
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Listening to the station here in Toronto Canada. Strong Signal. Running a AirSpy Discovery with Tram 1411 antenna.
Thanks for tuning in Dwaine!
Dear Neil,
I have carefully read and enjoyed the article you sent, which was published in 1983, and now I am translating it into Persian. I learned a lot from you today. Thank you.
Hosein from Iran, 73
Dear Bob and Neil,
Thank you for the scientific and detailed answers you sent. I am proud to talk with you.
Hosein from Iran, 73
Rain itself has no impact on shortwave radio propagation. However, during thunderstorms, you can hear static crashes on the shortwave radio bands that can impact your ability to hear a signal.
As for a radio amateur at the North Pole being able to communicate with a radio amateur at the South Pole, this is possible. However, a particular amateur radio “band” has to be “open” between those two points. This will not necessarily be possible every day of the week, but it will be possible at times.
Hello to the site manager and radio lovers.
I have had a question in my mind for years and now I want to ask you. Please everyone answer this question. 1. Is the range of short-wave radio and radio telegraph more or less in rainy weather? 2. Can a radio amateur in the North Pole communicate with another radio amateur in the South Pole without a repeater? I am waiting for your answers.
Hosein from Iran, 73
Hi Hosein
I see someone answered your questions, but it may help you to understand it a bit more.
1. Rain does NOT have any effect on Shortwave. The HF frequencies used for SW (0-30Mhz) are too “big” to be absorbed by the rain – smaller waves (higher frequencies) like the 2,000Mhz (2Ghz) used for satellite TV/Radio ARE affected by rain. So Shortwave listing in the rain is fine ( except during thunderstorms as Bob said 🙂 )
2. Yes. Pole to Pole communications on Shortwave is possible. The radio waves would need to “skip” from the ionosphere & the ground a few times, This sort of propagation of Shortwave is something all Ham operators need to learn about , I found a straight forward explanation here from the ARRL in the US. https://www.arrl.org/files/file/Technology/tis/info/pdf/8312011.pdf It is worth a read. It is not uncommon to use a path across one of the poles, but working out what time & what frequency to use in a skill. Maps like this https://www.sws.bom.gov.au/Images/HF%20Systems/Global%20HF/Ionospheric%20Map/WorldIMap0.gif are used to work out what path a frequencies can be used.
It is a fascinating thing to study , I hope this all helps.
73 Neil M0KNC