User's Manual

545C Operations Manual
02/10/2012 Prerelease DCN 00001789-A
© 2012 Meteorcomm LLC. All Rights Reserved. Proprietary and Confidential. Do Not Distribute. 25
4.1.5 Antenna Height
The height of the antenna should be optimized as a function of the
distance between the Remote Station and the Master Station. A plot of
optimum antenna height versus range is shown in Figure 3.3.
Figure 9: Remote station antenna height for meteor burst
The antenna cable length must be kept as short as possible to minimize
line losses. Try to maintain a line loss between the antenna and the
MCC-545C to less than 2 dB.
A table of cable loss (at 50 MHz) for various types of co-ax cables is
given in Table 3.1 for reference.
Table 5: CO-AX cable loss (50 MHz)
Cable Type
Loss/100 feet
(dB)
Diameter
(Inches)
Weight/100 feet
(lbs.)
RG 223, RG 58
3.0
.211
3.4
RG 214, RG 8
1.8
.425
12.6
RG 17
1.2
.870
20.1
LDF4A-50 1/2 inch heliax
.48
.500
15.0
LDF5A-50 7/8 inch heliax
.26
.875
33.0
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
Antenna Height (ft)
RANGE (mi)
Best Antenna Height
4
0
M
h