All Questions
Tagged with transceiver transmitter
10
questions
0
votes
1
answer
50
views
Piezo tr switch no echo signal
I set this circuit to use piezo as transceiver. I can perfectly transfer the transmitter signal (10 burst pulse) but as transmitter still connected onto piezo , any reveived signal is disappears. When ...
- 39
1
vote
2
answers
189
views
What is the purpose of the choke inductor coil in this qrp radio transmitter?
After building and testing these circuits, I want to understand the purpose of the choke coil in these qrp trans(ceiver)mitter circuits.
https://www.qsl.net/py2ohh/trx/curumim/curumim.htm
I ...
- 13
1
vote
0
answers
51
views
Is it possible to use RF signal wires to let a model car center itself on it using phase differences?
I'm looking for a way to let a model car (1/24 to 1/18) know how centered it is on a road. I thought about using a buried wire in the middle of each lane of the road. Would it be possible to detect ...
- 11
0
votes
1
answer
101
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WiFi Transmitter/Receiver [closed]
I want to create a small, battery-powered electronic device to detect the presence of AC voltage after a power outage. It would then transmit notifications to that effect.
The two components of the ...
- 1
1
vote
0
answers
195
views
How to create an RS485-compatible line driver with an adjustable slew rate?
I need to make an RS485 compatible line driver, capable of 12Mbit/s with fast slew rate, but with the capability to reduce the slew rate to about 50ns rise/fall time when operating at lower bitrates.
...
- 786
2
votes
2
answers
986
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What is the simplest 100km RF communication link there is?
I am looking for a technology for sending sporadic bytes over RF hundreds of kilometers away - assume line of sight. What should I look into to do that? What frequency? What modulation? Perhaps what ...
- 1,344
0
votes
2
answers
816
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Designing mil-std-1553 transceiver [closed]
I need to design a mil-std-1553 analog front end transceiver to already designed digital 1553 ip for my ms thesis. So I need to convert digital 3.3V to analog specs level and receive and convert to ...
- 1
0
votes
1
answer
184
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Smaller ultrasonic transceiver
I am a beginner working on my Arduino-based proximity sensor array project, like this one. I have already tested the functionality with single HC-SR04 transmitter/receiver and now I would like to ...
- 1
0
votes
2
answers
317
views
Transceiver and RF Emissions (Unintentional)
My question is simply what is RF emissions (unintentional) and how does it relate to a device (such as a smart phone) which contains a transceiver or transmitter (baseband IC) ? Which part of a RF ...
- 17
3
votes
2
answers
989
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Designing a Morse code transmit/receive shoe
Thank you for considering my general question, which I assure you is serious!
I want to build -- or have built -- a magnificent shoe that can convert taps (front of the shoe) into Morse code and ...
