[DARARepeater] TNG March 28

[Mark Erbaugh]

PLEASE if you are having any COVID, RSV or FLU symptoms DO NOT come to the clubhouse.

 

 

TNG - Thursday, March 28, 2024

DARA Clubhouse, 6619 Bellefontaine Rd. Dayton, OH 45424.  The meeting begins around 7pm. 

 

This week Logan Rickert will demonstrate a microscope (or two) that he has built with his 3D printer.

 

 

If anyone wants to or knows someone who might want to give a presentation at a future TNG, please let me know.

 

Everyone is invited!!!

 

 

 

 

LICENSE QUIZ #270

de Steve, AE8AT

Thought a reminder that the Extra question pool will refresh for all exams starting July 1st of this year might help motivate someone toward completing the top license class. Naturally, exams will be offered on May 17th & 18th (no Sunday exams) during the Dayton Hamvention® and this year there is a boot camp offered for the Extra test. The “Extreme Boot Camp” is $100 (limit 25 people) and runs Friday & Saturday, running 9AM – 1PM both days. The cost includes the ARRL Extra license exam manual, which will be mailed to you. Searching “Hamvention extreme boot camp” brought the page up for me. This week, all the questions are drawn from the Extra pool

 

E4E02 Which of the following types of noise can often be reduced with a digital signal processing noise filter?
A. Broadband white noise
B. Ignition noise
C. Power line noise
D. All these choices are correct

E7F05 How frequently must an analog signal be sampled by an analog-to-digital converter so that the signal can be accurately reproduced?
A. At least half the rate of the highest frequency component of the signal
B. At least twice the rate of the highest frequency component of the signal
C. At the same rate as the highest frequency component of the signal
D. At four times the rate of the highest frequency component of the signal

E9C07 What is the approximate feed point impedance at the center of a two-wire folded dipole antenna?
A. 300 ohms
B. 72 ohms
C. 50 ohms
D. 450 ohms

Answers:
E4E02 = D
E7F05 = B
E9C07 = A

 

73,

de Mark, N8ME

 

 

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