Since the spectral mask only defines power output restrictions up to 22 MHz from the center frequency, some people assume that the channel's energy doesn't extend any further than that, but in reality, it does. In fact, if the transmitter is sufficiently powerful, the signal can be quite strong even beyond the 22 MHz point. Therefore, it is incorrect to say that channels 1, 6, and 11 do not overlap. It is more correct to say that, given the separation between channels 1, 6, and 11, the signal on any channel should be sufficiently attenuated to minimally interfere with a transmitter on any other channel. But this is not universally true. For example, a powerful transmitter on channel 1 can easily overwhelm a weaker transmitter on e.g. channel 6. In one lab test, throughput on a file transfer on channel 11 decreased slightly when a similar transfer began on channel 1, indicating that even channels 1 and 11 can interfere with each other a little bit.
The Next To Minimal Infrared Transmitter For Pcl
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