October 7, 2021
What type of preamplifier, invented by hams, does not include a transistor, tube or other active amplifying device?
Parametric amplifiers use the nonlinearity of diode junctions to amplify signals.
VHF enthusiasts discovered and documented what unusual propagation mode?
Trans-equatorial skip was not considered possible at VHF until it was discovered by amateurs.
Hams created what worldwide network to distribute email via amateur radio?
The Winlink system uses a network of “mailbox” stations linked to servers via the Internet to provide email service to traveling hams and for disaster response communications.
September 30, 2021
APCO Project 25 (P25) radio systems use a 12-bit Network Access Code (NAC) for access control. Instead of an analog CTCSS tone or DCS code, the NAC prefixes:
The P25 NAC, represented by three hexadecimal digits, can be any value in the range $000 to $FFF, inclusive. How many of the 4,096 possible codes have special functions?
$293 is the specified default NAC. Receivers set for the NAC $F7E will pass the audio of any decoded signal it receives. Similarly, repeaters set for NAC $F7F will retransmit all incoming decoded signals it receives.
How many bits comprise the P25 sync sequence?
August 12, 2021
What was the top-grossing film of the 1980s?
"Raiders of the Lost Ark" was released in which year?
Which of the following is a 1984 American supernatural comedy film directed by Ivan Reitman and written by Dan Aykroyd and Harold Ramis?
July 29, 2021
The first known victim of man-made radiation was an assistant to:
In 1896, Thomas Edison devised the fluoroscope, which projected X-rays onto a screen. His experiments required the assistant to be repeatedly exposed to X-rays.
The American phrase “fair to middling”, used to describe something of average or slightly better than average quality, references a USDA gradation of:
All living tissue is radioactive to some degree. With 1,000 times the average radium concentration of any living organic product, what is the most radioactive food in the world?
July 22, 2021
Instead of multiple choice trivia, tonight there is a discussion question.
Here are fragments taken from various song lyrics. Select the one that grabs YOU most and
comment on how you identify with that selection when called on for discussion. (Chosen because
these are all things I wish I had written).
- Cheer up my brother live in the sunshine
We’ll understand it all by and by.
Farther Along" (Brad Paisley YouTube)
- Out here in the fields
I fight for my meals
I get my back into my living.
Teenage Wasteland", The Who
- Now the court square’s just a set of streets
That the people go ’round but they seldom think
‘Bout the little man that built this town
Before the big money shut him down.
Little Man", Alan Jackson
- Morning has broken like the first morning
Blackbird has spoken like the first bird
Praise for the singing, praise for the morning
Morning Has Broken", Cat Stevens
- Then I crossed the empty street
And caught the Sunday smell of someone fryin’ chicken
And it took me back to something that I’d lost
Somehow, somewhere along the way.
Sunday Morning Coming Down", Kris Kristofferson
June 24, 2021
The rise of the dinosaurs came in which geologic period?
The death penalty was abolished in France in 1981. The last three executed were child killers. What was the French method of execution until the death penalty was abolished?
What popular song had the following in its lyrics: “She had a picture of a cowboy tattooed on her spine, Saying Phoenix, Arizona, nineteen forty-nine”?
June 17, 2021
How many HF bands are available to US amateurs?
TRUE OR FALSE: A grid dip meter can measure the resonant frequency of an antenna.
What does GMT stand for?
May 27, 2021
If we lose 22 pounds of fat, what does it turn into?
An arthropod is an invertebrate animal having an exoskeleton, a segmented body, and paired jointed appendages — including scorpions. Which of these is true?
In the country song "I've Been Everywhere", first made famous by Hank Snow then better known by the Johnny Cash version, how many places are mentioned by Johnny?
May 20, 2021
What DX station in the Antarctic was much sought after by hams in the early thirties?
What does the loading coil in a mobile antenna do?
What famous amateur invented a suppressor bearing his name?
April 29, 2021
How many manned moon landings have there been?
Which is the largest of the United States?
Which of these scientific units is named for an Italian nobleman?
April 22, 2021
TRUE OR FALSE: All antenna systems need a ground reference and must be metallic.
Which two University of Alabama coaches served as both head baseball coach and head football coach during their coaching careers? (choose two)
Please select 2 correct answers
Viruses have either an RNA genome or a DNA genome. What is the current estimated average mutation rate of RNA viruses as compared with DNA viruses?
April 15, 2021
TRUE OR FALSE: Before the FCC went to incentive licensing in 1967, the Extra class license granted “extra privileges” to the General class license.
Which band is known as the “top” band?
When was 146.52 MHz first adopted as the 2 meter simplex frequency?
April 1, 2021
What city had the world’s first traffic cops?
The world’s first three traffic cops were assigned to London Bridge in the 18th Century to enforce new traffic laws that required carts coming into the city to keep to the west side of the bridge and carts leaving the city to keep to the east side.
In what year were the first aerial traffic reports broadcast?
The first aerial traffic reports were broadcast from the Goodyear blimp in New York City in 1936.