Transcript Exam-Prep Jepperdee: Technician Edition

Serious ‘XM
(aka W2XM)
presents
Exam-Prep Jepperdee:
General-Class Edition, v. 2
The obvious educational value of the ABC-TV show
called Jeopardy! is what inspired a science educator to
produce this game. The slides which follow allow the host to
mimic the action of the TV game show somewhat closely.
The presenter should feel free to make his own rules.
With the two halves each having one “daily double,” one
“final jepperdee,” and the same point values for questions,
two-team competition is facilitated.
Clicking on a point value (100, 200, 300,…) reveals a
question; then clicking anywhere on the question screen
reveals the answer; clicking “back” returns you to the game
board. “FJ” is “final jepperdee;” “SFJ” is “semi-final
jepperdee.” Other important hyperlinks have instructions.
Participants can raise their hands to indicate readiness
to answer a question. An electric circuit with push-buttons,
lockout circuitry, lights, and a sounder makes the game more
fun. A diagram is seen here.
Procedures
& Practices
Rules and
Regulations
Components
and Circuits
Signals &
Equipment
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
SFJ
VOCABULARY
ANTS & XMSN
LINES
PROPAGATION
ELEC. & RF
SAFETY
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
FJ
G2A11
What does the
expression "CQ
DX" usually
indicate?
The caller is
looking for any
station outside his
own country
back
When selecting a
CW transmitting freq.,
what minimum freq.
separation should you
allow stations on
adjacent frequencies?
G2B04
150 to 500 Hz
back
What does it
mean when a CW
operator sends
"CL" at the end of a
transmission?
G2C04
Closing station
back
G2E11
What does the
abbreviation
"MFSK" stand
for?
Multi (or Multiple)
Frequency Shift
Keying
back
G2B11 [97.405]
What frequency
should be used to
send a distress
call?
Whatever freq. has
the best chance of
communicating the
distress message
back
What is the
minimum age that
one must be to
quaIify as an
accredited VE?
G1D10 [97.509(b)(2)]
18 years
back
Who
determines what is
good engineering
and good amateur
practice?
G1B12 [97.101(a)]
The FCC
back
G2D10 (B)
What is QRP
operation?
Low power
transmit operation
back
What portion
of the 10-m band
is available for
repeater use?
G1E10 [97.205(b)]
The portion above
29.5 MHz
back
In what ITU
region is operation
7.175 - 7.300 MHz
permitted for a
General-class op?
G1E03 [97.301(d)]
Region 2
back
G5C10
What is the inductance of three 10
mH inductors
connected in
parallel?
3.3 millihenrys
back
What transformer
turns ratio would
match a 600-ohm
audio output
impedance to a 4ohm speaker?
G5C07
12.2 to 1
back
Why must the
cases of some
large power transistors be insulated from ground?
G6B08
To avoid shorting
the collector or
drain voltage to
ground
back
What is the min.
allowable discharge
voltage for max. life
of a standard 12v
lead-acid battery?
G6B14
.
10.5 volts
back
G4B05
Why is high input
impedance
desirable for a
voltmeter?
It decreases the
loading on circuits
being measured.
back
Name the
process that varies
the envelope of an
RF wave to carry
information?
G8A01
Amplitude
modulation
back
What is one advantage of carrier
suppression in a
single-sideband
phone xmission?
G8A06
The available
transmitter power
can be used
more effectively
back
What is the purpose of a speech
processor as used
in a modern
transceiver?
G4D01
To increase the
intelligibility of
transmitted phone
signals during poor
conditions
back
Where is an S
meter found?
G4D06
In a receiver
back
What should be
the z of a low-pass
filter as compared to
the z of the transmission line into
which it is inserted?
G7C06
About the same
back
Where should
the radial wires of a
ground-mounted
vertical antenna
system be placed?
G9B06
On the surface of
the ground or
buried a few inches
below the ground
back
What antenna
pattern would be
the best to use for
minimizing
interference?
G2D11
unidirectional
back
What device is
often used to
match the xmtr
output to other
than 50 ohms?
G4A06
antenna coupler
back
What must be
done to prevent
standing waves
on an antenna
feed line?
G9A07
The antenna f.p. z
must be matched to
the characteristic
impedance of the
feed line
back
What happens
when the f.p. of a
quad is changed from
the center of either
horiz. wire to the cntr
of either vertical wire?
G9C18
The polarization of
the radiated signal
changes from
horizontal to
vertical
back
Why is the F2
region mainly responsible for the
longest distance
radio propagation?
G3C03
Because it is the
highest ionospheric
region
back
What happens
to HF propagation
when the LUF
exceeds the MUF?
G3B11
No HF radio freq. will
support ordinary
skywave
communications over
the path
back
G3C07
What makes HF
scatter signals
often sound
distorted?
Energy is scattered
into the skip zone
through several
different radio wave
paths
back
When talking
about radio-wave
propagation, what
does “critical angle”
mean?
G3C04
The highest takeoff
angle that will return a
radio wave to the
Earth under specific
ionospheric condx.
back
What’s a reliable
way to learn if MUF is
hi enough to support
propagation bn ur stn
and a distant location
on 14 - 30 MHz?
G3B04
Listen for signals
from an
international
beacon
back
Why must the
metal enclosure of
every item of station
equipment be
grounded?
G0B06
To ensure that
hazardous voltages
cannot appear on the
chassis
back
What will cause
a Ground Fault
Circuit Interrupter
to disconnect the
120 or 240 VAC ?
G0B05
Current flowing from
one or more of the
hot wires directly to
ground
back
When might a
lead acid storage
battery give off
explosive hydrogen
gas?
G0B16
When being
charged
back
What does "time
averaging" mean in
reference to RF
radiation exposure?
G0A04
The total RF
exposure averaged
over a certain time
back
What must you do
if an evaluation of
your station shows
RF energy exceeds
permissible limits?
G0A05
Take action to
prevent human
exposure to
excessive RF fields
back
isotropic antenna
An antenna that
radiates and/or
receives equally
in all directions
back
The basic unit of
inductance
Henry
back
local oscillator
an oscillator that
generates one of the
input signals to a
mixer
back
Solar cycle
the 10.7-year
periodic variation
in solar activity
back
A resistor with a
precise temperature
coeffient that allows
it to be used as a
temp. sensor
thermistor
back
DAILY DOUBLE
Your wager?
Here’s the question…
DAILY DOUBLE
Your wager?
Here’s the question…
Semi-final Jepperdee
topic:
“nomenclature;”
YOUR WAGER?
The 3 connections
on a 1/4–in. stereo
phone plug are
called “tip,” “ring,”
and what?
sleeve
To game 2 board
Final Jepperdee!
Topic: “A.C. theory;”
YOUR WAGER?
Besides inductance,
what electrical
property exists in a
coil that is selfresonant?
capacitance
Next slide
We hope Examprep Jepperdee
was helpful!
Comments? Suggestions?
return