SOLUTIONS
SIGNAL SUBCOURSE 309......................Introduction to Electronics
LESSON 2..................................Radio Transmission and Reception
All references are to the Attached Memorandum.
1.
a--para 2-1b(1)
2.
a--para 2-1b(1)-(3)
3.
c--para 2-1b(4)
4.
d--para 2-2b(2)
5.
c--para 2-4a(2)
6.
d--para 2-4b(2)
7.
c--para 2-4c(2)
8.
b--para 2-4c(2)
9.
c--para 2-4c(6)
10.
b--para 2-4c(7)
11.
a--para 2-4c, d
12.
d--para 2-4d(4)
13.
d--para 2-4d(6)
14.
a--para 2-4e
15.
a--para 2-5c
16.
c--para 2-5c
The IF is usually the difference between the signal frequency and the
local oscillator frequency. The signal frequency = 1,200 kHz; the IF = 455 kHz:
L.O. = signal - IF
= 1,200
- 455
= 745 kHz
309 S
74
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