Join us at AMRAD’s 40th Anniversary Dinner
Thursday June 11
Monthly meetings are usually held on the second Thursday of each month, starting at 7:30 PM at the Tysons-Pimmit Regional 7584 Leesburg Pike, Falls Church, VA 22043. (Map and directions) Meetings are open to non-members, so don’t be shy. Consider yourself invited. Monthly meetings are reserved for technical talks
Saturday luncheons (also known as Tacos) are held every week around Noon at Tippy’s Taco House 8632 Lee Highway (US Rt 29) near Cedar Lane, Merrifield, (Fairfax), VA (Map and directions) Everyone is invited. There is no format: demonstrate your latest project, ask for technical assistance, or simply eat a taco.
May 14, 2015, 7:30pm – Pete McNeil, KF4HCW, “Digital Modulation Description Language”
While considering remote operations on HF there are two problems: 1. Most digital modes done these days require a lot of bandwidth because the signals are being transmitted and received as digitized audio (or worse), and 2. Network delays introduce timing problems inherent in CW work that are not normally apparent in half-duplex digital and audio work.
Pete will share his thoughts on developing a method to send digital timing information rather than analog audio to the transmitter and use direct synthesis to perform high fidelity modulation. It may be possible to use the descriptive language to code every currently known modulation scheme and then later use the same mechanism for schemes that have not yet been invented.
June 11, 2015, 6:30pm – AMRAD 40th Anniversary Dinner
Enjoy a social dinner and celebrate the accomplishments of AMRAD and its members since its founding in 1975. We are planning a three-course buffet meal and a commemorative (and useful) gift for all attendees. Seats are limited. Pre-pay your reservation by June 7.
April 2 – Bill Liles, NQ6Z, presented significant propagation data taken by hams during solar eclipses in the 20th and 21st Centuries. Discussion included possible AMRAD involvement in measurements during the August 21, 2017 solar eclipse. For details of “The Great Radio Atmospheric Propagation Experiment” see http://www.sweoc.org/GRAPE.html
March 12 – Frank Gentges, KØBRA demonstrated an infrared (IR) thermal imaging camera attachment for smartphones.
February 12 – Brennan T. Price, N4QX, ARRL’s Chief Technology Officer, represents the interests of Amateur Radio to numerous governmental and international agencies, including the FCC, NTIA, and ITU. With the staff of ARRL’s Technical Relations Office and ARRL’s Washington Team, he prepares for World Radiocommunications Conferences, held about once every four years, at which spectrum is internationally allocated to various radio services.