Dc Power Connection - GE MDS SD Series Technical Manual

The tables which follow show the approximate losses that will occur when using various lengths
and types of coaxial cable in the 200, 400 and 900 MHz bands, respectively. Regardless of the
type used, the cable should be kept as short as possible to minimize signal loss.
Table 3. Signal Loss in Coaxial Cables (at 200 MHz)
Cable Type
RG-8A/U
1/2 inch HELIAX
7/8 inch HELIAX
1-1/4 inch HELIAX
1-5/8 inch HELIAX
Table 4. Signal Loss in Coaxial Cables (at 400 MHz)
Cable Type
RG-8A/U
1/2 inch HELIAX
7/8 inch HELIAX
1-1/4 inch HELIAX
1-5/8 inch HELIAX
Table 5. Signal Loss in Coaxial Cables (at 900 MHz)
Cable Type
RG-8A/U
1/2 inch HELIAX
7/8 inch HELIAX
1-1/4 inch HELIAX
1-5/8 inch HELIAX

4.4 DC Power Connection

The transceiver may be operated from any well-filtered 10 to 30 VDC power source. The supply
must be capable of providing at least 2.5 Amperes continuously.
MDS 05-4864A01, Rev. I
10 Feet 50 Feet
(3 Meters) (15 Meters)
0.26 dB 1.27 dB
0.06 dB 0.38 dB
0.04 dB 0.21 dB
0.03 dB 0.16 dB
0.025 dB 0.13 dB
50 Feet
10 Feet
(3 Meters) (15 Meters)
0.51 dB 2.53 dB
0.12 dB 0.76 dB
0.08 dB 0.42 dB
0.06 dB 0.31 dB
0.05 dB 0.26 dB
10 Feet 50 Feet
(3 Meters) (15 Meters)
0.85 dB 4.27 dB
0.23 dB 1.15 dB
0.13 dB 0.64 dB
0.10 dB 0.48 dB
0.08 dB 0.40 dB
SD Series Technical Manual
100 Feet 200 Feet
(30.5 Meters) (61 Meters)
2.50 dB 5.07 dB
0.76 dB 1.60 dB
0.42 dB 0.83 dB
0.31 dB 0.62 dB
0.26 dB 0.52 dB
100 Feet 200 Feet
(30.5 Meters) (61 Meters)
5.07 dB 10.14 dB
1.51 dB 3.02 dB
0.83 dB 1.66 dB
0.62 dB 1.24 dB
0.52 dB 1.04 dB
100 Feet 200 Feet
(30.5 Meters) (61 Meters)
8.54 dB 17.08 dB
2.29 dB 4.58 dB
1.28 dB 2.56 dB
0.95 dB 1.90 dB
0.80 dB 1.60 dB
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