[DARARepeater] Thursday Night Group

[George]

Thursday Night Group 7pm NOT 6pm

SDR Install & Demo

Upcoming Activities 

** License Exam Questions of the week

Projects

The Thursday Night Group will meet

Thursday, Oct 18 at 7:00 PM at the DARA Clubhouse.

------------------------------------------------------

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.

 

2.        SDR Install & Demo   

**DOWN LOAD SOFTWARE & BRING YOU LAPTOP**

Eric Vinande, KG6NFJ, will walk you through how to set up an RTL-SDR and
software on a Windows laptop (please bring yours).  check out and down-load
the software as described at this website

www.rtl-sdr.com/qsg  (quick start guide).

Eric will have many USB RTL-SDR/antenna sets for sale at the TNG for $10
(Maker Faire leftovers).  AND There's a possibility of also showing folks
how to set up the software on Linux if there's enough interest.

 

3.        Upcoming Activities 

    Oct 25 - 7pm    

John Ackermann, N8UR, "If You Have One Clock, You Know What Time It Is; If
You Have Two Clocks, 

You're Never Sure: Time, Frequency, Accuracy, and Noise."

4.        ** 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, RF grounding!

 

T4A08 Which of the following conductors provides the lowest impedance to RF
signals?

A. Round stranded wire

B. Round copper-clad steel wire

C. Twisted-pair cable

D. Flat strap

 

G4C10 What could be a symptom of a ground loop somewhere in your station?

A. You receive reports of "hum" on your station's transmitted signal

B. The SWR reading for one or more antennas is suddenly very high

C. An item of station equipment starts to draw excessive amounts of current

D. You receive reports of harmonic interference from your station

 

E9D12 Which of the following would provide the best RF ground for your
station?

A. A 50 ohm resistor connected to ground

B. An electrically short connection to a metal water pipe

C. An electrically short connection to 3 or 4 interconnected ground rods
driven into the Earth

D. An electrically short connection to 3 or 4 interconnected ground rods via
a series RF choke

 

5.        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:

T4A08 = D.

G4C10 = A.  Eliminate the hum by keeping the ground lines short, running
them 

together to the ground, and connecting all the grounds together.

E9D12 = C.

 

 

 



---
This email has been checked for viruses by AVG.
https://www.avg.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/dararepeater/attachments/20181017/65f13c2c/attachment-0001.html>