[DARARepeater] Thursday Night Group

[George]

Thursday Night Group 7pm NOT 6pm

Radio Repairs 

NEW ** License Exam Questions of the week

Projects

The Thursday Night Group will meet

Thursday, Oct 4 at 7:00 PM at the DARA Clubhouse.

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Things this week:  

1.        Thursday Night Group 7pm NOT 6pm

It was published in this month's RFCarrier that TNG meets at 6pm every
Thursday.  

This is INCORRECT. We meet at 7 PM.

Also Tom, N8ZM, will be the speaker and TNG is the topic for FRIDAY, Oct 5,
DARA General membership meeting.

 

2.        Radio repairs

We will have several radios this week that need attention.  One is a Johnson
Viking Ranger 2 with 'ugly signal out'.

The other is an ICOM IC-701HF transciever with dirty pots and ??  also the
Icom power supply us not working.

3.        NEW ** License Exam Questions of the week

One question is drawn from each of the three question pools. Steve, AE8AT,
is providing these questions.  Thanks Steve

 

Answers are at the end of this email.

 

We received a question regarding the strange mix of letters and numbers that
begin each question.  Every exam question has a unique combination of
letter-number-letter-number.  The first letter is a T, G, or E to identify
the question pool: Technician, General, or Extra.  Next is a single number
representing the category, for example, category zero is safety in all three
exam pools.  The first letter-number pair is called the "sub-element".   The
second letter is a "group" containing related questions.  Example,
subelement G8 is Signals and Emissions, with group C of that sub-element
being Digital Emission Modes.  The questions are numbered sequentially:
G8C01, G8C02, and so forth always with a 2-digit number at the end.  The
question identity is included in case of a typo or some "help" from
autocorrect obscures either the question or the answer.  

 

This week's questions are all drawn from section 9A, antennas and feedlines,
of each of the three question pools.  

 

T9A05 How would you change a dipole antenna to make it resonant on a higher
frequency?

A. Lengthen it

B. Insert coils in series with radiating wires

C. Shorten it

D. Add capacitive loading to the ends of the radiating wires

 

G9A07 What must be done to prevent standing waves on an antenna feed line?

A. The antenna feed point must be at DC ground potential

B. The feed line must be cut to a length equal to an odd number of
electrical quarter wavelengths

C. The feed line must be cut to a length equal to an even number of physical
half wavelengths

D. The antenna feed point impedance must be matched to the characteristic
impedance of the feed line

 

E9A04 Which of the following factors may affect the feed point impedance of
an antenna?

A. Transmission-line length

B. Antenna height, conductor length/diameter ratio and location of nearby
conductive objects

C. The settings of an antenna tuner at the transmitter

D. Sunspot activity and time of day

4.        Projects

Bring something to work on.   What you building?

For more information about B-Road Thursday Evening Group Projects.

Go to W8BI homepage ( <http://www.w8bi.org> http://www.w8bi.org) under
Education, Thursday Group.

Or

Go to ( <https://sites.google.com/site/darathursdaynite/>
https://sites.google.com/site/darathursdaynite)

There is a lot of information on this web site with additional content.

Hope to see you on Thursday evening's.

Everyone is invited!!! 

 

 

Answers:

T9A05 = C. 

G9A07 = D. 

E9A04 = B.

 

 

 



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