[DARARepeater] TNG 10/26

[mark.election at gmail.com]

TNG - Thursday, October 26

DARA Clubhouse, 6619 Bellefontaine Rd. Dayton, OH 45424.  The meeting begins
around 7pm. Presentations (if any) begin at 7:30pm.

 

The topic this week is anarchy. For those of you who don't know what that
means: no special presentation, just catch up with your friends and work on
any projects.

 

Tom is working on an upcoming presentation on the RigExpert Zoom analyzers,
but a date has not been confirmed.





Everyone is invited!!!

 

 

LICENSE QUIZ #252

de Steve, AE8AT

 

This week the quiz topic is fox hunting, hidden transmitter, or direction
finding, your choice! The General question refers to a loop antenna, which
has a narrow null and therefore useful for direction finding.

T8C02 Which of these items would be useful for a hidden transmitter hunt?

A. Calibrated SWR meter
B. A directional antenna
C. A calibrated noise bridge
D. All these choices are correct

G9D10 In which direction or directions does an electrically small loop (less
than 1/10 wavelength in circumference) have nulls in its radiation pattern?

A. In the plane of the loop
B. Broadside to the loop
C. Broadside and in the plane of the loop
D. Electrically small loops are omnidirectional

E9H07 Why is RF attenuation used when direction-finding?

A. To narrow the receiver bandwidth
B. To compensate for isotropic directivity and the antenna effect of feed
lines
C. To increase receiver sensitivity 
D. To prevent receiver overload which reduces pattern nulls

 

73,

de Mark, N8ME

 

 

Quiz Answers

T8C02 = B.
G9D10 = B.
E9H07 = D.

 

 

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