[DARARepeater] TNG - Thursday, March 12 - Anarchy

[Mark Erbaugh]

TNG – Thursday, March 12

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

There is no special presentation this week.

We are looking for presentations. If you have something you would like to share, please let me know. 


73,
de Mark, N8ME

License Exam Quiz #361

de Steve, AE8AT 

March has a well loved holiday celebrated in many countries. Of course, I’m referring to Pi Day! While some among us may prefer to celebrate Tau Day, I think we are united on the idea that any excuse for pie is an excuse for pie!  Anyone planning to celebrate Pi Day at the most Pi-ous(?) moment at 3/14 15:55:35.4? For those wondering, that was 3.14159265 using the 3.1415 directly, then taking 92.65% of the 3600 seconds to arrive at 55 minutes, 35.4 seconds.  Those who have memorized Pi to 100 digits, please correct the glaring inaccuracy and provide a Thursday Night talk on how you will slice pie to the more exacting precision.

T9A12 What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?
A. It has more gain than a 1/4-wavelength antenna
B. It radiates at a very high angle
C. It eliminates distortion caused by reflected signals
D. It has 10 times the power gain of a 1/4 wavelength whip

G5A09 What unit is used to measure reactance?
A. Farad
B. Ohm
C. Ampere
D. Siemens

E9G02 What type of coordinate system is used in a Smith chart?
A. Voltage circles and current arcs
B. Resistance circles and reactance arcs
C. Voltage chords and current chords
D. Resistance lines and reactance chords


Answers:
T9A12 = A. (The equation for gain includes pi)
G5A09 = B. (Inductive reactance = X = 2 pi * f * L)
E9G02 = B. (Reactance again! And because everyone loves a Smith chart)

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