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The Lost Art of HF: the Rebirth of Shortwave in a Digital World

The Lost Art of HF: the Rebirth of Shortwave in a Digital World

August 6, 2020 | 14:00 - 15:00 EDT (18:00 - 19:00 UTC)

The Lost Art of HF: the Rebirth of Shortwave in a Digital World

August 6, 2020 | 14:00 - 15:00 EDT (18:00 - 19:00 UTC)

Much of the pioneering work in radio technology was done at "high frequency," and generations of RF engineers, radio operators, and SIGINT specialists cut their teeth on shortwave. But is there still room for HF in the digital world of cellular, satellites, wi-fi, and microwave? This webinar explains why the "lost art" of HF is not only still relevant, but has been making a comeback in recent years, particularly in the area of both local and global communications. A central topic of this presentation is why much of the rebirth of HF is due to advancements in a wide range of fields, such as antenna design and digital modulation schemes, as well improvements in our understanding of propagation and how we can adapt to the challenges of propagation at HF. In addition to these topics, this webinar discusses how the performance and capabilities of HF direction finding / radiolocation have been improved in recent years and why DF has become an important enabler of HF as a modern communications technology.

Paul Denisowski is an Product Management Engineer at Rohde & Schwarz North America, where he specializes in radiomonitoring, radiolocation (direction finding), and interference hunting solutions, as well as general purpose test and measurement instrumentation. A frequent author and presenter on a wide variety of topics, he has over 20 years of field application experience, including extensive work in direction finding and interference hunting for commercial and military/government customers.

Paul previously held field and research positions with HP/Agilent, Fujitsu, Alcatel, and Nortel, and has both a Master's degree in Electrical Engineering from North Carolina State University as well as a Master’s degree in Germanic Languages from UNC-Chapel Hill. He was also a visiting lecturer at the Tokyo Institute of Technology under a joint grant from the US National Science Foundation and the Japanese Ministry of Education (Monbusho) and has been an active amateur radio operator (KO4LZ) for more than three decades.

Paul Denisowski

Registration will close one hour prior to the start of the webinar (1pm ET)! Any registrations taken after this time will not be able to view the live webinar.

Registration and attendance at this live event is complimentary for AOC members and non-members alike. However, you must be signed into your AOC account to register. If you don't have an AOC account, but would like to register for free, please join here as a "Guest Non-Member."


After you register for the webinar, you will be emailed a confirmation with the link to the webinar, along with instructions on how to connect.

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You can also access the webinar via free mobile apps available on iOS and Android devices.

For questions, please contact Caleb Herr.

Privacy Policy

PLEASE NOTE: By registering for this webinar, you are providing explicit consent that the details of your registration may be used by the Association of Old Crows (AOC), the presenter, and/or the sponsor(s) to contact you via email for informational and marketing purposes.

Presentation Recording

The entire presentation and Q&A will be recorded for viewing approximately 24 hours after the event.  On-demand viewing of recorded webinars is reserved as a complimentary benefit for dues-paying AOC members, or access to the recording can be purchased individually for Guest Non-Members. You can join the AOC here.

Thank you to the following sponsors for making this event possible.


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With over 13,000 members internationally, the Association of Old Crows is an organization for individuals who have common interests in Electronic Warfare (EW), Electromagnetic Spectrum Management Operations, Cyber Electromagnetic Activities (CEMA), Information Operations (IO), and other information related capabilities. The Association of Old Crows provides a means of connecting members and organizations nationally and internationally across government, defense, industry, and academia to promote the exchange of ideas and information, and provides a platform to recognize advances and contributions in these fields.