The September club meeting will be online via Zoom (bit.ly/2YKBhF3). If you have questions about joining the meeting, please email email@example.com.
Elks Lodge #80
This month’s presenter is Harry Montag, Exalted Ruler of Lincoln Elks Lodge #80. For several years, Lincoln Elks have opened their doors to the LARC to host LOG foldings, Board meetings, and the holiday party.
Join us as Harry shares how local Elks improve the quality of life for Lincolnites through community philanthropic programs for children, veterans, and many others.
We will be offering the Tech Class online via Zoom (https://bit.ly/3gOM08r). The course starts August 26 and will run for approximately six weeks on Wednesday evenings from 6:30 – 9:30 pm CDT.
Before the class starts, please make sure that Zoom is working (test instructions) on your device. Zoom is available for Windows, Macs, smartphones, and most tablets. You do not need a Zoom account to join the class. You will need at minimum a mic and speakers (a headset works great). A webcam is also advised.
We will be using the ARRL License Manual, 4th edition. While the manual is not required, it is highly advised. The manual is available for purchase from the ARRL or through Amazon (my personal preference for studying, is the spiral-bound version).
If you have additional questions, send an email to firstname.lastname@example.org.
The August club meeting will be online via Zoom (https://bit.ly/3jQa78G). If you have questions about joining the meeting, please email email@example.com.
Art Zygielbaum, KØAIZ, ARRL Midwest Division Vice-Director, will present on the state of Amateur Radio and the latest activities at the ARRL.
The July club meeting will be online via Zoom (https://us02web.zoom.us/j/87116498879?pwd=ZjNGLzBNSTlJSGtKc1ZYOUZFcHNYZz09). If you have questions about joining the meeting, please email firstname.lastname@example.org.
Field Day 2020 Review and COVID-19 Impact
As with so many other community events, LARC’s Field Day activities were relocated and restructured due to COVID-19. Local restrictions forced the committee to move the event from Mahoney Park in Lincoln to an alternate location, a daunting task on its own without the additional restrictions.
How could the committee plan a successful event intended to practice emergency preparations, provide public interaction, and offer a social time for club members when the city imposes limitations?
Join Greg Brown, KTØK, and Ed Holloway, KØRPT, as they give a review of Field Day 2020 planning and event operations.
The June club meeting will be held online via WebEx (https://bit.ly/2Tv4bXh). If you have any questions about joining the meeting, please email email@example.com.
Multiple Frequency-Shift Keying and Mysterious Olivia — Trans-Polar Fun and More
If you have taken the leap into using your shortwave transceiver as a digital mode communication tool, perhaps with the highly popular FT8 mode, or with another mode that uses a computer rather than with your voice or by using a Morse code key, then you understand the effectiveness of digital communication. If you have only heard the glowing reports from others who have tried digital modes, then you are a candidate for a new journey that can be rewarding in many ways.
Olivia MFSK is an amateur radioteletype protocol that uses multiple frequency-shift keying (MFSK) and is designed to work in difficult (low signal-to-noise ratio plus multipath propagation) conditions on shortwave bands. The signal can be received accurately even if the surrounding noise is 10 dB stronger. It is commonly used by Amateur Radio operators to reliably transmit ASCII characters over noisy channels using the high-frequency (3 MHz to 30 MHz) spectrum. The effective data rate of the Olivia MFSK protocol varies but is typically around 150 characters per minute.
Frequency-shift keying (FSK) is a modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal. The technology is used for communication systems such as telemetry, weather balloon radiosondes, caller ID, garage door openers, and low-frequency radio transmission in the VLF and ELF bands. The simplest FSK is binary FSK (BFSK). BFSK uses a pair of discrete frequencies to transmit binary information, “0s” and “1s.” With this scheme, the “1” is called the mark frequency and the “0” is called the space frequency. RTTY is an example of a BFSK radio signal modulation scheme.
Come meet Olivia and the digital chat mode that makes FT8 obsolete for social radio enthusiasts.
— Tomas Hood, NW7US