Questions tagged [Radio communication] (86)

6
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Does it make sense to start learning electronics with the ARDUINO?

I think that Arduino is not very promising and need to start learning electronics with soldering, because the solder of the electronics makers of the schemes themselves, and do not buy ready-made parts. Is it really so? Where to start?
hannah.Kassulke14 asked April 4th 20 at 00:11
1
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Improvement of the transmitted signal SDR at a frequency of 27MHz?

Wanted for hands-on experience with SDR to implement control RC car via XTRX. Figured out what sends the native control panel: it just turns on/off the carrier wave 27.2 MHz on a particular template for each of the buttons. Began to implement the same patterns for the SDR. The first problem faced by -- the minimum carrier f...
Rosalia_Corw asked April 4th 20 at 00:08
1
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How to get the distance which will hit the transmitter?

For example there is BS - 2.4 GHz, power 100 mvat and coeff. antenna gain 13 dBi. How far you can put the receiver (linkup)?
demond.Sporer69 asked April 3rd 20 at 23:37
1
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To configure GSN ACS radio relay and key FOB. As acs 112R to make switching the device on button And and off button?

Hello, please tell me how to acs 112R to make switching the device on button And and off button on the transmitter. Now configured so that any on/off button
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Explain the truth table for rs flip-flop. Why for the same values of r and s produce different output values?

Can you explain how to drive value according to this scheme, but I do not understand for lack of experience in this field? What is Q(t) b Q(t+1)? And when the same input values of two rows in the table to produce different output values? Need to offset. Sorry for the punctuation errors. Thank you!
3
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Ip camera nevidimka by the Registrar why?

One of the ip cameras is not seen by the Registrar, cable length 70 meters. Directly in the vicinity of the works. To check on her place temporarily hooked up to the cupola and at 70 meters, she earned. In what could be the reason?
7
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One of drives radio at the usual outlets 220. How to find and obligatorily DJ?

1) written in the subject - how to find the DJ in 9 storey building with 100 apartments for the night squeak "cool track" from nowhere? 2) is it Really that simple?
Blaze13 asked April 2nd 20 at 17:25
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Is it possible to jam the signal modern TV in a radius of several meters?

Is this possible in principle? Are there any ready solutions?
Dominic67 asked March 31st 20 at 21:50
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The idea for the exhibition... may make the antenna?

Hello. Soon an exhibition at the University, he studying at the faculty of telecommunications. I really want to participate, but no idea. What would you recommend? If there are sites with projects on this topic, throw plz
Estefania asked March 29th 20 at 23:35
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Can I buy in China bluetooth?

Hello! In light of some of the stupor in connection with the recent events tell me whether from aliexpress to buy a bluetooth module, for example hc-08 hc-11? Bust whether at the post office for the purchase of special equipment of radio communication, and the modules like certification in Russia took place. Bought one of ...
Alverta_Braun asked March 29th 20 at 19:32