[DARARepeater] Thursday Night Group

[George]

Antenna Analyzer - update 

Power Supply Tester - continues

NEW ** License Exam Questions of the week

Projects

The Thursday Night Group will meet

Thursday, Sept 20 at 7:00 PM at the DARA Clubhouse.

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Things this week:  

1.       Antenna Analyzer - update

Rubin and Phil will tell us the latest on this project.

 

2.       Power Supply Tester - continues

Steve, KB8STB, has expressed interest in TNG having a Power Supply Tester.

Are we going to design one and build it?

Let's start this discussion.

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.

 

There is a special radio event ahead, Enigma Reloaded, September 28 through
October 6.  DARA is one of the activator clubs!  While the Enigma machine is
still capable of strong encryption (some WWII messages remain unbroken
today), publishing the machine settings makes the encryption public domain.
Today's digital methods like FT8, JT65, and others are permissible because
the encoding and decoding methods are published.  The exam pool has exactly
zero questions on the Enigma machine itself, so the topic this week is
encoding.

 

T1D03

When is it permissible to transmit messages encoded to hide their meaning?

A. Only during contests

B. Only when operating mobile

C. Only when transmitting control commands to space stations or radio
control craft

D. Only when frequencies above 1280 MHz are used

 

G8C04

Which of the following describes Baudot code?

A. A 7 bit code with start, stop, and parity bits

B. A code using error detection and correction

C. A 5 bit code with additional start and stop bits

D. A code using SELCAL and LISTEN

 

E8A09

How many levels can an analog-to-digital convertor with 8-bit resolution
encode?

A. 8

B. 8 multiplied by the gain of the input amplifier

C. 256 divided by the gain of the input amplifier

D. 256

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:

T1D03 = C.

G8C04 = C.

E8A09 = D.

 

 

 

 

 



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