All Questions
Tagged with transceiver radio
12
questions
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
0
answers
58
views
RFM69HCW Digital IO connection setup
I'm working to setup an RFM69HCW transceiver with an ARM microcontroller. I've read over the datasheet for the RFM69HCW and I see that DIO0 is the interrupt signal, so I've broken that one out, but ...
- 201
0
votes
1
answer
145
views
AX5043 RF XCVR, problem making the automatic frequency control work in GMSK
I am working with the AX5043 RF transceiver from OnSemi.
I am using GMSK, and I am unable to make the automatic frequency control (AFC) work properly.
I am using a bitrate of 2400 bps. To be sure to ...
- 1
1
vote
1
answer
319
views
433 MHz Transceiver - understanding OOK demodulator parameter 'OokFixedThreshold'
I would appreciate some help to understand a parameter for this device https://www.semtech.com/products/wireless-rf/fsk-transceivers/sx1231h. I'm far from an expert at RF matters and this question has ...
- 11
0
votes
1
answer
326
views
Fastest working Wireless communication method between two devices
I attempted to ask this question on the network engineering forum but the mods there think superuser.com is a better place for it, but when I posted there, they think here is the best place for this ...
user152879
0
votes
2
answers
233
views
Building a (toy) Ghost Detector
I'd like to build a ghost detector. I'm only just beginning the design stage, and thought I'd reach out for some suggestions.
Receiver: I'm planning to end up with a handheld device with an analog ...
- 4,002
1
vote
3
answers
1k
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Identify Symbols on Circuit Diagrams for VHF Radio Build
I found these circuit diagrams for VHF transceiver online, and am having trouble recognizing a number of the symbols. Would you please help me identify the boxed symbols?
Here's what I've got so far:
...
- 13
-3
votes
2
answers
486
views
RFM69W transceiver - Poor range
I'm having some difficulties with the RFM69W radio transceiver using Arduino Unos with the recommended RadioHead library. I have 2 Unos - each with one RFM69W - successfully sending and receiving ...
- 109
1
vote
2
answers
569
views
Can an RF module be used for ZigBee?
I am very new to wireless communication protocols so please excuse me if this is a silly question.
I am using a PIC to communicate between two Zigbee modules. However I also own a 2.4GHz RF ...
- 911
0
votes
1
answer
187
views
How to listen to radio communications from a transmitter?
I have two devices communicating at a frequency which I don't know. I want to listen to that communication so that I can replicate one of the devices and fool the other. Basically I want to reverse ...
- 471
2
votes
2
answers
689
views
Shared antenna on multiple 2.4Ghz receivers
I want to use several 2.4 Ghz transcievers (not sure which IC yet, either Atmel AT86RF*** or TI CC) in order to build a simultaneous multi-channel sniffer. The transciever output is differential. I am ...
- 23