Welcome to K9LA’s Amateur Radio Propagation Web Site
Carl Luetzelschwab K9LA
Now retired after 41 years of RF Design with Motorola and Raytheon (formerly Magnavox). Visit the new RF Power Amps link for topics related to RF power amplifiers.
If you’d like for me to give a presentation on solar topics and/or propagation to your local club via Skype, just let me know (email@example.com).
NEW on 5 November 2013 in the 160m link - “The K9LA 160m and 80m Antenna”
NEW on 5 November 2013 in the new RF Power Amps link - “Impact of SWR on Efficiency of PA”
NEW on 4 November 2013 in the Basic Concepts link - “Seasonal Effects on Propagation”
NEW on 4 November 2013 in the 160m link - “Another Simple 160m Antenna”
NEW on 4 November 2013 in the General link - “Old Sunspot Data”
UPDATED on 4 November 2013 in the Contesting link - “Single Band Winners in ARRL DX”
NEW on 3 November 2013 in the General link - “Did We Lose a Solar Cycle?”
NEW on 3 November 2013 in the HF link - three articles - “Best Height for a 10m Antenna”, A Refresher on 10m Long Path” and “Mitigation for Disturbances to Propagation”
NEW on 3 November 2013 in the Contesting link - “A Propagation Advantage for East Coast Contesters”
Reminder: W6ELProp executable file is in the Tutorials link (the www.qsl.net link does not work as of June 2013)
Reminder: NM7M’s book titled “The Big Gun’s Guide to Low-Band Propagation” is in the 160m link.
Reminder: NM7M’s book titled “The Little Pistol’s Guide to HF Propagation” is in the General link.
I have been licensed since October 1961 (my Novice call was WN9AVT). My interest in propagation goes back to my college days at Purdue University (BSEE 1969, MSEE 1972).
This web site contains selected articles about propagation from my monthly Propagation column in WorldRadio (now WorldRadio Online) and from my contributions to other Amateur Radio publications. These propagation articles are grouped into Timely Topics, Basic Concepts, Tutorials, General, 160m, HF, VHF, Contesting, and Webinars. Just click on the link on the left to navigate to these areas.
You may also read about my early Novice days at the WN9AVT link, and my airplane days at the Aviation link.
You can contact me at firstname.lastname@example.org.