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.

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 #282
de Steve, AE8AT

The quiz this week was inspired by a type of antenna, which is also an answer to one of the questions. Enjoy!


T9A06 Which of the following types of antenna offers the greatest gain?
A. 5/8 wave vertical
B. Isotropic
C. J pole
D. Yagi

G9C07 What does “front-to-back ratio” mean in reference to a Yagi antenna?
A. The number of directors versus the number of reflectors
B. The relative position of the driven element with respect to the reflectors and directors
C. The power radiated in the major lobe compared to that in the opposite direction
D. The ratio of forward gain to dipole gain


E9D12 What is the purpose of making a Yagi’s parasitic elements either longer or shorter than resonance?
A. Wind torque cancellation
B. Mechanical balance
C. Control of phase shift
D. Minimize losses

Answers:
T9A06 = D
G9C07 = C
E9D12 = C