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Introduction
1705A Spectrum Monitor
1-11
NEW YORK CITY
CHICAGO
LOS ANGELES
HONOLULU
ANCHORAGE
GREENWICH
ENGLAND
NORTH
POLE
PRIME MERIDIAN
000°
INTERNATIONAL DATELINE
180°
45°W
45°E
90°E
135°E
135°W
SPACENET 2
69°
RCA K2
81°
RCA K1
85°
SBS 3
97°
GSTAR A2
103°
GSTAR A1
105°
ANIK B
109°
ANIK C2
112.5°
SPACENET 1
120°
MORELOS 1
113.5°
MORELOS 2
116.5°
SBS 5
122°
ASC 1
128°
ARCTIC
CIRCLE
Figure 1-4: Sample longitudinal map of the Ku-Band satellites of most interest to
news vehicle earth stations on the North American continent and Hawaii
Using the 1705A for Satellite Communication
The 1705A has two separate inputs, one, the L--Band Input, is specifically
designed to work with LNB down converters, which have an output signal range
of 0.95 to 1.80 GHz. This provides a means of looking at the signals from either
Ku or C--Band satellites. The second input is identified as 70 MHz and accepts
signals from 45 to 100 MHz. This second input is primarily designed to work
with the IF frequency of an exciter, but can also be used to look at signals in the
low VHF television band and the FM broadcast band up to 100 MHz.