Due to splitting of signal into two parts, each receiver gets 1/2 the power, i.e. “splitting loss” = 3 dB for an ideal lossless splitter. Practically there is an additional internal loss of about 2 to 5 dB depending on quality of the splitter.
Hence:
insertion loss = splittig loss + internal loss = 3 dB + 2 to 5 dB = 5 dB to 8 dB
NOTE: Many manufacturer/seller specify "internal loss" as "insertion loss", omitting 3 dB "splitting loss" to give a false impression of a very low loss splitter
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Here is one example (NOT used by me, shown here for guidance only)
Specifications
- Frequency: 2.4 GHz
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Insertion Loss:
5-1000 MHz: ≤ 5.5 dB;
1000-1750 Mhz: ≤ 6 dB;
1750-2450 Mhz: ≤ 7 dB
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