Questions tagged [transmission]

31 questions
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Range of wireless signals

I've put up this question already on physics.SE but I miss an answer to the following: My assumption: A 5 GHz band provides a higher bandwidth and therefore is more stable as it can support more users compared to a 2.4 GHz band. But the latter has a…
Ben
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Do phones transmit RF when they’re not in a call?

I apologize in advance if this isn’t the right place to post this, but I though some of you might know the answer to my question. Many people say that having your phone in your pocket (while not in flight mode) is a bad idea, due to the radio…
Coto
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Using Baofeng BF888s with Midland GXT1000

We're trying to ease over to Baofengs where I work, go over to MURS, and I've been trying to get the BF888s to work with the GXT1000s but all I've got is the Midland RECEIVES from the Baofeng, but it cannot transmit to the Baofeng, the green light…
DaGarebear
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R433A SAW Resonator

I have one of those wireless weather sensor things that stopped transmitting. Inside is one of those ubiquitous R433A SAW resonators that transmit on 433.92MHz. I've verified that the board it's on is getting V+ and Data, so clearly problem is on…
Duston
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Can timing information be used to compress data for LoRa transmission?

I have a course challenge. It involves calculating an FFT of an audio signal of 2 combined frequencies (up to 20KHz) then sending it over LoRa through to a fixed receiver. There will be an interferer. Spreading factor is fixed. Grading is based on…