[DARARepeater] TNG 9/5 - Anarchy

[Mark Erbaugh]

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

*TNG – Thursday, August 22, 2024*

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

No special presentation this week.

DARA/TNG is offering a three Saturday afternoon hands-on class on three
popular 3D modeling software programs. Bring your computer and learn (by
practicing) how to design your own 3D models. This focus is on utility
prints, such as enclosures and antenna supports, not art style models.
Classes are at 2:00pm at the clubhouse:

Saturday 9/21 - OpenSCAD Information and download <https://openscad.org/>
Saturday 9/28 - FreeCAD Information and download <https://www.freecad.org/>
Saturday 10/5 - Fusion360 Information and Download
<https://www.autodesk.com/products/fusion-360/personal>

Is preferred, but not required that you install the software before the
class. The links above have installers for Windows, Mac and Linux (except
no Linux version for Fusion360, but a snap is available at Ubuntu Fusion360
Snap <https://snapcraft.io/fusion360>)


If anyone wants to or knows someone who might want to give a presentation
at a future TNG or if you have a topic that you would like to see, please
let me know.

Everyone is invited!!!

73,
de Mark, N8ME

*License Exam Quiz #284*
de Steve, AE8AT


The quiz topic this week stems from a historic event that occurred 85 years
ago. The location was a radio station located in Gleiwitz Germany (now
Poland). One of the radio towers built of larch wood standing approximately
110 meters tall is still in use today. The Nazi propaganda arm and the SS
staged an event by dressing prisoners in Polish uniforms, injecting them
with drugs and killing them at the radio station. A short anti-Hitler
message was broadcast. This “invasion” served as the pretext for the Nazi’s
long-planned invasion of Poland. While Hitler had invaded countries prior
to Poland, what made this event different were the treaties Poland had with
Britain and France. August 31 was the night of the “attack” at the radio
station. Germany invaded Poland the next day. On September 3, both Britain
and France declare war and WWII is underway. Given the technology of the
day it was probably AM and somewhere between 530 and 1600 kHz.  A plaque,
entirely in Polish, seems to have 1935 and 243.7 meters (1.231 MHz) but the
online-image quality and my Polish are not good. Given that the frequency
was likely well below our 160 meter band, we will do our best with the
questions.


T3B10 What frequency range is referred to as HF?
A. 300 to 3000 MHz
B. 30 to 300 MHz
C. 3 to 30 MHz
D. 300 to 3000 kHz


G8A11 What is the modulation envelope of an AM signal?
A. The waveform created by connecting the peak values of the modulated
signal
B. The carrier frequency that contains the signal
C. Spurious signals that envelop nearby frequencies
D. The bandwidth of the modulated signal


E3B05 Which of the following paths is most likely to support long-distance
propagation on 160 meters?
A. A path entirely in sunlight
B. Paths at high latitudes
C. A direct north-south path
D. A path entirely in darkness



Answers:
T3B10 = C
G8A11 = A
E3B05 = D
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/dararepeater/attachments/20240902/57408ae5/attachment-0001.html>