Combining 2 antennas into 1 or visa versa

[abcd567]

@Nitr0

Must also bear in mind that using a power combiner/splitter is not free. Be sure to add +3db loss to whatever is published since splitting a signal also halves it.

Signal combiner for two Pi's one antenna

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 . …