ua1zbe
/
rpitx
mirror of https://github.com/F5OEO/rpitx
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add minimal explanation on rtlmenu

This commit is contained in:
F5OEO 2018-11-06 13:07:58 +01:00 committed by GitHub
parent da3fda1189
commit f9e22250a9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 24 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
README.md
View File

@ -99,7 +99,30 @@ This is state of the art opensource digital modulation. You need Freedv for demo
![opera](/doc/operarpitx.JPG) ![opera](/doc/operarpitx.JPG)
This a beacon mode which sound like Morse. You need opera in mode 0.5 to decode. This a beacon mode which sound like Morse. You need opera in mode 0.5 to decode.
## To continue ## Rpitx and low cost RTL-SDR dongle ##
![rtlmenu](/doc/rlsdrmenu.png)
**rtlmenu** allows to use rtl-sdr receiver dongle and **rpitx** together. This combine receiver and transmission for experimenting.
To launch it, go to rpitx folder and launch rtlmenu.sh :
```sh
./rtlmenu.sh
```
You have first to set receiver frequency and gain of rtl-sdr. Warning about gain, you should ensure that you have enough gain to receive the signal but not to strong which could saturate it and will not be usefull by **rpitx**.
Choose your choice with arrows and enter to start it.**Don't forget, some test are made in loop, you have to press CTRL^C to exit and back to menu.**
### Record and play ###
![replay](/doc/replay.png)
A typical application, is to replay a signal. Picture above shows a replay of a signal from a RF remote switch.
So first, record few seconds of signal, CTRL^C for stop recording. Then replay it with play.
### Transponder ###
![fmtransponder](/doc/fmtransponder.png)
We can also live transmitting a received band frequency. Here the input frequency is a FM broadcast station which is retransmit on 434MHZ.
# To continue
**rpitx** is a generic RF transmitter. There is a lot of modulation to do with it and also documentation to make all that easy to contribute. This will be the next step ! Feel free to inspect scripts, change parameters (frequencies, audio input, pictures...). **rpitx** is a generic RF transmitter. There is a lot of modulation to do with it and also documentation to make all that easy to contribute. This will be the next step ! Feel free to inspect scripts, change parameters (frequencies, audio input, pictures...).
# Credits # Credits