Urban Canyon Flight Inc UC10X ユーザーズマニュアル
UC10x Installation Manual
URBAN CANYON FLIGHT INC
UC10X-001-IM REV02
CONFIDENTIAL & PROPRIETARY
PAGE 54 OF 69
11.4.3 Antenna Cable Design / Selection
UC10x system does not include an antenna.
The UC10x family is designed to meet high power (unrestricted altitude) requirements with an allowance of 0 dB
min (UC10x directly connected to antenna) to 1.5 dB maximum insertion loss in the connectors and cables used to
connect it to the antenna. Excessive loss will degrade both transmitter output power and receiver sensitivity.
An acceptable cable:
➢ Has power rating of 3W average at 1GHz minimum (10+ W preferred)
➢ Has voltage rating of 300 VRMS minimum (1,000+ VRMS preferred)
➢ Has less than 1.5 dB loss for the required cable run length (1 dB preferred)
➢ Has a characteristic impedance (Z
➢ Has voltage rating of 300 VRMS minimum (1,000+ VRMS preferred)
➢ Has less than 1.5 dB loss for the required cable run length (1 dB preferred)
➢ Has a characteristic impedance (Z
0
) of 50 Ω ± 5 Ω
➢ Has double-braided screens consisting of a combination foil and braid screen
➢ For installations that require frequent disassembly/reassembly, select connectors rated for number of
➢ For installations that require frequent disassembly/reassembly, select connectors rated for number of
mating cycles
➢ Uses an SMA male on one end (for the UC10x), and mates with the antenna on the other (depends on
antenna selected)
Once the cable run length is known, a cable type with low enough loss per meter that meets the above
requirements can be chosen. Longer runs require lower loss (usually physically thicker) cable. Consider moving the
transponder closer to the antenna to minimize the losses in the antenna cable – subject to the limits identified
above, the transponder can be at any distance from the control head without affecting performance in any way.
Table 20 below is a guide to the maximum usable lengths for various common cable types. This table uses typical
cable loss data to calculate maximum cable length assuming 1.5dB cable loss. Actual cable loss will vary between
manufacturer and may change after use (e.g. due to repeated cable bending) and should always be verified
through measurement by the end user / installer.
Table 20. Example maximum cable length by cable type
Type
Jacket Dia.
Insertion
Loss (dB/ft)
Max Cable
Length (ft)
Length (ft)
Insertion
Loss (dB/m)
Max Cable
Length (m)
0.190" [4.83mm]
0.58
2.6
1.90
0.8
0.072" [1.83mm]
0.44
3.4
1.46
1.0
0.047" [1.19mm]
0.40
3.8
1.31
1.1
0.098" [2.49mm]
0.38
3.9
1.25
1.2
0.114" [2.90mm]
0.26
5.7
0.86
1.8
0.195" [4.95mm]
0.20
7.5
0.66
2.3
0.159" [4.04mm]
0.17
8.7
0.57
2.6
0.242" [6.15mm]
0.14
11.1
0.44
3.4
0.190" [4.83mm]
0.13
11.5
0.43
3.5
0.405" [10.29mm]
0.08
18.8
0.26
5.7
0.870" [22.1mm]
0.04
39.5
0.12
12.0