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Cable Loss Calculator
Calculates signal loss through coaxial cables and connectors at FPV frequencies.
Frequency (MHz)
5.8 GHz
2.4 GHz
1.3 GHz
900 MHz
Cable type
RG178 (U.FL Pigtail)
Sehr dünn, in U.FL-Pigtails · Ø 1.37mm
RG316 (Pigtail)
Dünnes Koax, häufig in FPV · Ø 2.54mm
✓
UT-085 / RG405 (Semi-Rigid)
0.085" Semi-Rigid · Ø 2.16mm
UT-141 / RG402 (Semi-Rigid)
0.141" Semi-Rigid · Ø 3.58mm
LMR-100
Niedrig-Verlust, dünn · Ø 2.79mm
LMR-200
Niedrig-Verlust · Ø 5.08mm
LMR-240
Niedrig-Verlust, dick · Ø 6.35mm
LMR-400
Sehr niedrig-Verlust · Ø 10.29mm
Cable length (cm)
5cm
10cm
15cm
20cm
30cm
50cm
Connectors (both ends)
U.FL (IPEX)
· 0.15 dB
Winzig, auf VTX/Receiver-PCBs
MMCX
· 0.12 dB
Klickverbinder, häufig bei VTX
SMA
· 0.05 dB
Standard-Gewinde, robust
RP-SMA
· 0.05 dB
Reverse-Polarity SMA
Ohne / Direkt
· 0 dB
Kein Stecker
VTX Power (mW)
25mW
200mW
400mW
600mW
800mW
1000mW
1600mW
Result
Cable loss
0.18 dB
Connector loss
0.30 dB
Total loss
0.48 dB
per 100ft
54.6 dB
Output power at antenna
358.2 mW
Lost
10.4%
Range factor
×0.95
Values based on manufacturer datasheets (Times Microwave, Belden). Connector loss is approximate at 5.8 GHz. Actual values vary with build quality.
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