image depicting a New York polling place from 1900 showing voting booths on the left. The image is public domain and is from the 1912 History of the United States, volume V. Charles Scribner's Sons, New York.
Friday, November 1, 2024
Remember to cast your ‘ballotta’
image depicting a New York polling place from 1900 showing voting booths on the left. The image is public domain and is from the 1912 History of the United States, volume V. Charles Scribner's Sons, New York.
Friday, October 25, 2024
My ‘additive manufacturing’ journey
Finished tugboat and robotic skeleton 3D printed and placed on the build plate of the Bambu Lab A1 model printer. (Photo by Mark Ollig) |
Bambu Lab A1 mini 3D printer building the tugboat. (photo by Mark Ollig) |
Friday, October 18, 2024
‘Air Mail’ within a tube network
Friday, October 11, 2024
RCA’s ‘All-Shook Up’ journey
Friday, October 4, 2024
The early days of Minnesota television
© Mark Ollig
“The managing director of the British Broadcasting Company, J. W. Reith, says that television, the transmission of pictures as well as the voice by radio, is theoretically quite possible,” the Minneapolis Journal reported May 7, 1924.
Around 1923, Minnesotan Stanley E. Hubbard organized WAMD (“Where All Minneapolis Dances”), a 1,000-watt radio station at the Marigold Gardens Ballroom. He had a small studio and a transmitter there.
The Minneapolis Star newspaper announced Saturday, Feb. 21, 1925, “The station [WAMD] will broadcast on 234.8 meters [1,277.7 kilocycles] and will operate between 2:45 and 5:30 p.m. Sunday.”
WAMD began broadcasting live music Feb. 22, 1925, from inside the Marigold Gardens at 1336 Nicollet Ave. in Minneapolis. In July, the station moved to the downtown Radisson Hotel at 35 S. Seventh St.
Hubbard started KSTP radio March 29, 1928. In August, he became interested in experimental radio picture broadcasts, employing a mechanical scanning system that used optical still images transmitted via radio signals.
Mechanical scanning utilizes rotating disks, drums, and mirrors to capture and display images, then breaks them down into horizontal lines for transmission and reconstruction.
KSTP broadcast still images over its radio waves four times a week, but only a few people had a mechanical scanning television set (called a televisor) to see them.
In 1928, amateur radio hobbyists experimented with constructing television receivers. One example had a housing measuring 23-by-26-by-12 inches, featuring a 1.5-by-1.25-inch glass screen, with its internal mechanical scanning system powered by five 45-volt B (dry cell) batteries.
In 1933, Dr. George A. Young obtained a license for Minnesota’s first experimental television station, W9XAT, which used mechanical scanning-disc broadcasting equipment.
The picture quality was reportedly “subpar,” and the audio was transmitted over his WDGY radio station on 780 kHz until 1934, then on 1130 kHz until he ended his experimental television broadcasting in 1936.
In 1938, 100 experimental television sets were reported to exist in the country, mainly in the possession of corporate executives and manufacturing engineers testing this new visual medium.
In August 1939, Hubbard arranged a public demonstration of television viewing of an American Legion parade via a closed-circuit broadcast on six television sets at the Radisson Hotel.
Minnesota’s first commercial television station, KSTP-TV, began broadcasting Tuesday, April 27, 1948, on channel five with a test pattern, followed by a Minneapolis Millers baseball game at 3 p.m. and narrated newsreels.
The Radio Manufacturers Association, which tracked radio and television statistics, reported that more than 6,000 television sets were in operation in the Twin Cities area Aug. 3, 1948, with many of them in hotels, bars, and restaurants.
WTCN-TV (now KARE-11) started broadcasting on channel four July 1, 1949.
During the 1940s, TV sets were expensive and primarily found in affluent homes and businesses. RCA, Zenith, General Electric, Admiral, Emerson, Andrea, Philco, and DuMont were the leading manufacturers of televisions.
Decreasing prices, the growing number of television programs, and the wonder of the new technology drove people to purchase TVs.
The Twin Cities joined major television networks Sept. 30, 1950, via coaxial cable and radio relay transmission towers.
NBC, CBS, and ABC provided the majority of national programming during the 1950s. The DuMont Television Network also offered national broadcasting from 1946 until 1956.
In 1952, WTCN-TV’s channel four license was sold and used for the broadcast frequency of WCCO-TV.
In 1953, WTCN-TV reappeared with WMIN-TV in a time-sharing arrangement on channel 11 using its VHF frequencies of 198 to 204 MHz.
In 1955, WMIN-TV sold its share of channel 11 to WTCN-TV, allowing WTCN-TV to begin broadcasting full-time.
In January 1953, KSTP-TV became the first television station in Minnesota to broadcast at the maximum allowed 100,000 watts by the FCC, reaching viewers in Brainerd and Duluth.
NBC’s color broadcast Jan. 1, 1954, of the Tournament of Roses Parade in Pasadena, CA, marked the first time such a transmission was available nationwide.
It is estimated that around 100 color television sets, likely prototypes or early production models, across the country received the broadcast, as manufactured models only appeared a few months later.
An April 26, 1954, Minneapolis Star newspaper ad showed the RCA Victor CT-100 color television set with its Tri-Color Picture Tube and a 15-inch screen selling for a pricey $1,000 ($11,746 today).
In 1957, Twin City Area Educational Television from the University of Minnesota’s St. Paul campus began broadcasting on channel two.
KSTP-TV made history Jan. 1, 1961, by becoming the first station to broadcast its entire program schedule in color.
In 1954, WTCN-TV channel 11’s children’s program “Lunch With Casey” was hosted by Casey Jones (Roger Awsumb) with Roundhouse Rodney (Lynn Dwyer). The same year, WCCO-TV began “Axel and His Dog,” featuring Clellan Card as Axel Torgeson and Mary Davies as Carmen the Nurse.
In 1960, “Romper Room,” hosted by Mary Betty Douglass, known as “Miss Betty,” aired on WTCN-TV and moved to KMSP-TV channel 9 in 1962.
By 1966, many programs were broadcast in color. I clearly remember hearing, “The following program is brought to you in living color on NBC.”
Each week, from 1966 to 1969, I watched “Star Trek” on KSTP-TV channel five.
And yes, the program was brought to me in living color on NBC.
A Minneapolis Star newspaper ad for the RCA Victor CT-100 color television (published April 26, 1954) |
Friday, September 27, 2024
QR Codes: mysterious square 2D patterns
Friday, September 20, 2024
Find it with a smart tag
Samsung SmartTag+, a digital tracking smart tag compared to the size of a quarter. (photo by Mark Ollig) |
Friday, September 13, 2024
Reaching the moon: 65 years ago
Friday, September 6, 2024
Smartphones (and radios) in the classroom
© Mark Ollig
Those who went to high school with me will recall the only telephone we had access to was the payphone on the wall next to the trophy case.
In today’s school environment, technology is integrated into the learning curriculum. Students use their smartphones to access the internet and the web, research subjects, and connect with family, friends, and social media.
The first commercial 1G cellular telephone network was activated in Chicago on Oct. 13, 1983.
The first commercially available handheld mobile cellular phone used on this network was the Motorola DynaTAC 8000X, often referred to as “The Brick.”
The Oxford English Dictionary states that “cellphone” was first used as a single, unhyphenated word in the magazine Cellular Business on Nov. 24, 1984.
Over the past 40 years, the cellphone has evolved far beyond its original purpose as a calling device into a powerful smartphone packed with cutting-edge technology and features.
However, we still call it a “cellphone,” as the term is commonly used and understood in everyday conversation.
As a retired telephone guy, one comparable analogy is touchtone and rotary dial telephones.
Although touchtone pushbutton phones have replaced rotary dial telephones, we still say “dial the phone number,” not “push the buttons of the phone number.”
Come to think about it, we also say, “Call the number.”
In 1997, the term “smartphone” was used to describe the Ericsson GS88, a prototype cellular mobile phone developed in Sweden that included a monochrome touchscreen, stylus pen, keyboard, email, text messaging, web browsing, and computer connectivity.
Although approximately 200 GS88s were manufactured, none were ever sold to the public.
For today’s column, I will sometimes use “cellphone” as a general term to encompass both basic cellphone and smartphone technologies.
Students do use cellphones for study and research while in school; however, concerns about their distractions and misuse in the classroom have led to certain restrictions being put in place.
Some people view having a cellphone in the classroom as a temptation to get the answers for tests and quizzes.
There is also concern about recording audio or taking photos and videos of students and teachers without their consent.
In May 2023, the Governor of Florida signed House Bill 379 into law, which became effective July 1, 2023. This bill restricted the use of cellphones in classrooms during school hours and regulated students’ use of social media on school Wi-Fi networks.
Section 1006.07 of the Florida Statutes requires that school districts’ codes of student conduct prohibit student use of wireless communication devices during class time.
The Florida Statute allows teachers to establish classroom rules of conduct, which could include collecting cellphones before class or confiscating them if students use them during class.
Section 3 of House Bill 379 states: “Prohibit and prevent students from accessing social media platforms through the use of Internet access provided by the school district, except when expressly directed by a teacher solely for educational purposes.”
In California, Assembly Bill 4216 is slated to take effect on July 1, 2026. It requires school districts to establish and periodically revise policies regarding the restricting or prohibiting of students from using smartphones while at school.
Minnesota enacted Statute 121A.73, also known as the “School Cell Phone Policy,” during its 2024 legislative session. It went into effect on May 18, 2024.
Subdivision 1 of this statute requests the Minnesota School Boards Association to develop a model policy addressing the possession and use of cellphones in schools by Dec. 15, 2024.
Subdivision 2 decrees that Minnesota school districts and charter schools adopt their policies regarding cellphone possession and use in school by March 15, 2025.
Statute 121A.73 requires these policies to be included in the student handbook and readily available on the district or charter school website.
Other states, including Virginia, Louisiana, and Georgia, have also introduced legislation restricting cellphone use during school hours.
Studies have shown a strong linkage between young people’s hours of online social media and gaming using smartphones and other devices with compulsive “screen time immersion,” an addiction seen as a serious problem among the youth of today.
By restricting phone use during class, it is hoped that students will direct their attention to the subjects being taught and participate more fully in classroom activities.
A recent Pew Research Center survey revealed that over 95% of teenagers have access to smartphones, and 54% admit that giving up social media would be challenging.
Pew also reported that 72% of U.S. high school teachers say cellphone distraction is a significant problem in the classroom.
Back in the mid-70s, when I was in high school, you’d often see me walking the hallways and into classrooms with my Panasonic portable radio held in one hand and a stack of textbooks tucked under my arm.
During breaks in classroom instruction, my radio sometimes played the top hits from stations like WDGY and KDWB, filling the room with music, much to the appreciation of the other students, and at times triggering a raised eyebrow from the teacher.
Back then, if I had wanted to bring my phone into a classroom, it would have been attached to a mile-long telephone cord from my house.
Of course, we did have the payphone.
A picture from the 1975 Winsted Holy Trinity Yearbook shows a classmate was talking on the payphone next to the trophy case. |