Introduction to HF: Modulation and Propagation sponsored by AOC Granite State
his presentation covers two important aspects of HF (high frequency) communications: the modulation types most commonly used for HF communications as well as the fundamentals of HF propagation.
Modulation types covered in this presentation include both double-sideband AM and single-sideband as well as narrowband FM. For digital modes, the use of amplitude shift keying (ASK) and frequency shift keying (FSK) are also discussed.
The propagation portion of this webinar starts with a general introduction to HF and the main HF propagation modes (direct wave / line of sight, ground or surface wave, and skywave). Since skywave is the most unique and widely used HF propagation mode, an introduction to the ionosphere and the characteristics of the different ionospheric layers is then provided, followed by a discussion of unusual ionospheric events and an overview of the different ways in which the state of the ionosphere can be quantified.
The presentation concludes with a short summary and a question and answer session.
This webinar is generously sponsored by the Association of Old Crows, Granite State Chapter.
Date and Time
Location
Hosts
Registration
- Date: 18 Nov 2020
- Time: 12:00 PM to 01:00 PM
- All times are (UTC-05:00) Eastern Time (US & Canada)
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- Co-sponsored by Association of Old Crows, Granite State Roost
Speakers
Paul Denisowski
Introduction to HF: Modulation and Propagation sponsored by AOC Granite State
Biography:
Paul Denisowski is a Product Management Engineer at Rohde & Schwarz, with over 20 years of both lab and field experience in test and measurement. Paul has authored numerous whitepapers, presentations, videos and webinars on a wide variety of topics, including interference hunting, direction finding, EMC, amplifiers, and general radio frequency applications. Paul holds a Master's degree in Electrical Engineering from North Carolina State University and was also a visiting lecturer at the Tokyo Institute of Technology. Paul is also an active amateur radio operator (KO4LZ) and holds DXCC, WAS, and VUCC.
Agenda
This presentation will begin on Wednesday, November 18, 2020 at 12:00 PM Eastern Standard Time.
Audience members may arrive 15 minutes in advance of this time.