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Author Topic: ARTICLE: K9LA - Propagation on 630-Meters and 2200-Meters  (Read 2513 times)

WA2ONH

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ARTICLE: K9LA - Propagation on 630-Meters and 2200-Meters
« on: December 10, 2018, 10:27:22 AM »

From K9LA’s Amateur Radio Propagation Web Site
http://k9la.us/index.html

Under the "Monthly Feature" Tab" is this month's article ...
Propagation on 630-Meters and 2200-Meters
Carl Luetzelschwab K9LA December 2018
http://k9la.us/Dec18_Propagation_on_630m_and_2200m.pdf

"This is a theoretical look at propagation on 630-Meters and 2200-Meters using ray tracing
software. It expands on the brief discussion in the ARRL Handbooks. Look for a real-world
investigation of propagation on NDB frequencies (near 630-Meters) in a future QST article."


"The 2019 ARRL Handbook (along with several earlier editions) has a short section (Section
19.80) starting on page 19.32 titled “Propagation Below the AM Broadcast Band”. I penned this
section as an introduction to propagation on 630-Meters (475 KHz) and on 2200-Meters (137
KHz), and wanted to get across the concept that short hops would be prevalent on our new low
frequency bands but perhaps with lower ionospheric absorption than on 160-Meters."


Downloadable PDF 15-page file of approx 2,053 kb size
« Last Edit: December 10, 2018, 10:34:36 AM by WA2ONH »
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73 de WA2ONH  <dit dit> ... Charlie
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N6VL

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RE: ARTICLE: K9LA - Propagation on 630-Meters and 2200-Meters
« Reply #1 on: January 26, 2019, 04:44:49 PM »

The above PDF has a broken link. Here's the good one:

http://k9la.us/Dec18_Propagation_on_630m_and_2200m_-_revised_24Dec2018.pdf
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VE1YY

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RE: ARTICLE: K9LA - Propagation on 630-Meters and 2200-Meters
« Reply #2 on: February 24, 2019, 05:05:13 AM »

Thank you for the alert to the link and the corrected link. Fascinating reading from an acknowledged expert.
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