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ARSGDAT.3AG
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1992-10-04
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6KB
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191 lines
;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\:
; :
; AMATEUR RADIO STUDY GUIDE v1.00 :
; :
; Copyright (c) 1992 David Drzyzga - All Rights Reserved :
; :
; Based on a program coded in BASIC by Russ Revels :
; :
;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\:
;
; You can include comments an the file anywhere you want
; just like these comments. You cannot put a comment in
; the middle of a line though.
;
; When modifying this file, there are several things you
; must be aware of:
;
; -> Any line of text in this file cannot exceed 65 characters!
; this is the 65th character^
;
; No harm will be done, but nothing over 65 characters will
; be read by the program.
;
; -> Do not make questions more than 20 lines long, or you
; will receive an 'out of memory' error when you execute
; the program.
;
; -> You can add or delete questions as you please, just be
; sure to follow the format of the existing questions.
;
;
;
(3AG-1-1.1)
Which frequencies are attenuated by a low-pass filter?
A. Those above its cut-off frequency
*
(3AG-1-1.2)
What circuit passes electrical energy below a certain frequency
and blocks electrical energy above that frequency?
D. A low-pass filter
*
(3AG-1-2.1)
Why does virtually every modern transmitter have a built-in
low-pass filter connected to its output?
C. To attenuate excess harmonic radiation
*
(3AG-1-2.2)
You believe that excess harmonic radiation from your transmitter
is causing interference to your television receiver. What is
one possible solution for this problem?
B. Install a low-pass filter at the transmitter output
*
(3AG-2-1.1)
What circuit passes electrical energy above a certain frequency
and attenuates electrical energy below that frequency?
B. A high-pass filter
*
(3AG-2-2.1)
Where is the proper place to install a high-pass filter?
A. At the antenna terminals of a television receiver
*
(3AG-2-2.2)
Your Amateur Radio transmissions cause interference to your
television receiver even though you have installed a low-pass
filter at the transmitter output. What is one possible solution
for this problem?
B. Install a high-pass filter at the television antenna
terminals
*
(3AG-3-1.1)
What circuit attenuates electrical energy above a certain
frequency and below a lower frequency?
A. A band-pass filter
*
(3AG-3-1.2)
What general range of RF energy does a band-pass filter reject?
D. All frequencies above a specified frequency and below a lower
specified frequency
*
(3AG-3-2.1)
The IF stage of a communications receiver uses a filter with a
peak response at the intermediate frequency. What term
describes this filter response?
A. A band-pass filter
*
(3AG-4-1.1)
What circuit is likely to be found in all types of receivers?
C. A detector
*
(3AG-4-1.2)
What type of transmitter does this block diagram represent?
D. A VFO-controlled transmitter
┌──────┬──────────────┬────────────────┐ \│/ ANTENNA
│ │ │ │ │
│ ┌───┴───┐ ┌───┴───┐ ┌────┴────┐ │
│ │ │ │ │ │POWER │ │
│ │ VFO │──────┤DRIVER ├───────┤AMPLIFIER├─────┘
│ └───────┘ └───┬───┘ └────┬────┘
│ │ │
│ ┌───────┐ │ ┌─────────┐ │
│ │POWER │ │ │TELEGRAPH│ │
└──┤SUPPLY │ └──┤ KEY ├───┘
└───────┘ └─────────┘
DIAGRAM 3AG-4-1.2
*
(3AG-4-1.3)
What type of transmitter does this block diagram represent?
B. A simple crystal-controlled transmitter
\│/ ANTENNA
│
┌──────────┐ ┌───────┐ ┌─────────┐ │
│ CRYSTAL │ │ │ │POWER │ │
│OSCILLATOR├────>│DRIVER ├───────│AMPLIFIER├──>──┘
└──────────┘ └───┬───┘ └────┬────┘
│ │
│ ┌─────────┐ │
│ │TELEGRAPH│ │
└──┤ KEY ├───┘
└─────────┘
DIAGRAM 3AG-4-1.3
*
(3AG-4-1.4)
What is the unlabeled block (?) in this diagram?
B. A detector
\│/ ANTENNA
│
│
│ ┌───────┐ ┌───────────┐ ┌───────┐ ┌───────────┐
└───│ │ │ IF │ │ │ │ AUDIO │
│ MIXER ├────│ AMPLIFIER ├─────│ ? ├────│ AMPLIFIER │
└───┬───┘ └───────────┘ └───┬───┘ └───────────┘
│ │
┌──┴──┐ ┌──┴──┐
│ OSC │ │ BFO │
└─────┘ └─────┘
DIAGRAM 3AG-4-1.4
*
(3AG-4-1.5)
What type of device does this block diagram represent?
C. A simple superheterodyne receiver
DIAGRAM IN BOOK WRONG CHECK ON CORRECT DIAGRAM
*
(3AG-4-2.1)
What type of device does this block diagram represent?
D. A simple FM receiver DIAGRAM 3AG-4-2.1
*
(3AG-4-2.2)
What is the unlabeled block (?) in this diagram?
D. A rectifier modulator
*