SBE Chapter 37
SBE Chapter 37
May 26, 2022  

Prior Meetings

Xperi Corporation Logo

All Are Welcome at SBE Meetings;
SBE Membership is not Required


Mr. Nick Andrulewicz 
Mr. Chris Babendreier 
Mr. Zachary Babendreier 
Mr. Don Backus 
Mr. Robert Ballou 
Mr. Rob Bertrand 
Mr. Bob Bush 
Mr. Richard Cassidy 
Mr. Jonathan Charry 
Mr. Robert Clinton 
Mr. Jeff Davis 
Mr. Steve Floyd 
Mr. John Garziglia 
Mr. Rafael Gonzalez 
Mr. Andrew Gunn 
Mr. William Harrison 
Mr. Brian Haywood 
Jaswin Henderson 
Mr. John Kean 
Mr. Al Kenyon 
Mr. David Kolesar 
Mr. Kent Kramer 
Mr. Horace Murray 
Mr. Mike Raide 
Mr. John Reiser 
Mr. Art Rose 
Mr. Daniel Ryson 
Mr. Gregg Skall 
Mr. Jonathan Solomon 
Mr. Carl Swanson 
Mr. Fred Willard 
Mr. Glen Yakushiji 

All Digital AM - WWFD Frederick

The Gamut

Guest Speaker: David Kolesar & Mike Raide

January 15, 2019

In July 2018, WWFD in Frederick, MD (820 kHz, 4.3 kW non-directional daytime, 460 watts directional nighttime) became the first AM station in the United States to turn off its analog signal and transmit fulltime a digital-only HD Radio signal. This presentation discussed the steps taken to achieve this milestone: antenna adjustments, transmitter modifications, and the experimental authorization. Initial drive test reports were shared, as well as a summary of outstanding issues and future work.

David Kolesar (CBT, CBNT) is a Senior Broadcast Engineer at Hubbard Radio. His primary role for the past twelve years has been to serve as the transmitter engineer for WTOP-FM, Federal News Network (WFED), and WWFD. David is the Program Director of The Gamut, the format broadcast on WWFD, the first full-time all-digital radio station in the United States. Prior to working at Hubbard Radio, David was an Electronics Engineer in the Information Technology Division of the U.S. Naval Research Laboratory (Washington, D.C.) from 2001-2006. David earned a Master of Electrical Engineering (M.E.E.) from the Catholic University of America (2001), and a Bachelor of Science (B.S.) in Physics from the same institution in 1999.

Mike Raide has been the Senior Manager for Broadcast Technologies at Xperi Corporation for the past 10 years. Previously he served for 10 years as Chief Engineer at CBS Radio, Rochester, NY. He is SBE Certified as a Senior Radio Engineer (CSRE) with AMD, CBNE and DRB specializations.

A bite to eat was served starting at 6:30 PM, we discussed a tiny bit of Chapter 37 business and began our presentation about 7:00 PM.  Thanks to our friends at WAMU for welcoming us to their facility.

Photo Credit: Fred Willard
Photo Credit: Fred Willard

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