[DARARepeater] TNG 8/15 - Hamfest Review

[Mark Erbaugh]

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

*TNG – Thursday, August 15, 2024*

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

There have been some hamfests recently (Columbus, Cincinnati and Huber
Heights among others). Did you attend? Anything interesting to share with
the group?

Recently, Logon Ricart demonstrated a $200 3D printer (Bambu Lab A1 Mini).
While many may use a 3D printer to print models created by others, a more
practical use for TNG members is printing custom parts for our own projects.

Is there interest in a two or three session class to learn how to design
these parts? There's too much going on on Thursday nights to try and do it
then, so I'm thinking of Saturday afternoons after the license classes when
the classroom is available. This would be something hands on where you
bring your own computer. I don't think we would actually do the 3D printing
so you don't have to bring (or even own) a 3D printer. I'm looking for both
students and instructors (or people to be both).

DARA/TNG owns a 3D printer that has never been used (AFAIK) since we
purchased it back in 2020. Maybe we can come up with some way for members
to use it.

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 #281*
de Steve, AE8AT


Hans Christian Oersted was born 14 August 1777. A Danish chemist and
physicist, it was he who, in an evening lecture in April of 1820, observed
that electrical current passing through a wire would deflect a compass
needle. The Oersted is a unit of magnetic field strength named in his honor
as is the Oersted Medal. This week’s quiz is on some flavors of magnetism
present in the hobby. Reference used was britannica.com accessed on 4
August 2024.


T5C03 What describes the ability to store energy in a magnetic field?
A. Admittance
B. Capacitance
C. Resistance
D. Inductance


G3A08 How can a geomagnetic storm affect HF propagation?
A. Improve high-latitude HF propagation
B. Degrade ground wave propagation
C. Improve ground wave propagation
D. Degrade high-latitude HF propagation


E0A06 Why are there separate electric (E) and magnetic (H) MPE limits at
frequencies below 300 MHz?
A. The body reacts to electromagnetic radiation from both the E and H fields
B. Ground reflections and scattering cause the field strength to vary with
location
C. E field and H field radiation intensity peaks can occur at different
locations
D. All these choices are correct



Answers:
T5C03 = D
G3A08 = D
E0A06 = D
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