diff --git a/README.md b/README.md
index a886945..946c3b9 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,14 @@
-**rpitx** is a radio transmitter for Raspberry Pi (B, B+, PI2, PI3 and PI zero) that transmits RF directly to GPIO. It can handle frequencies from 5 KHz up to 500 MHz.
+**rpitx** is a radio transmitter for Raspberry Pi (B, B+, PI2, PI3B,PI3B+,PIZero,PiZerow) that transmits RF directly to GPIO. It can handle frequencies from 5 KHz up to 1500 MHz.
 
 Before you transmit, know your laws. **rpitx** has not been tested for compliance with regulations governing transmission of radio signals. You are responsible for using your **rpitx** legally.
 
+Rpitx is now based on a general Radio Frequency library : https://github.com/F5OEO/librpitx
+
 _Created by Evariste Courjaud F5OEO. Code is GPL_
 
 # Installation
+Assuming a Raspbian Lite installation (stretch) : https://www.raspberrypi.org/downloads/raspbian/
+
 ```sh
 git clone https://github.com/F5OEO/rpitx
 cd rpitx
@@ -13,13 +17,13 @@ cd rpitx
 ./install.sh
 ```
 # Hardware
-Plug a wire on GPIO 18, means Pin 12 of the GPIO header ([header P1](http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29)). This acts as the antenna. The optimal lenght of the wire depends the frequency you want to transmit on, but it works with a few centimeters for local testing.
+Plug a wire on GPIO 4, means Pin 7 of the GPIO header ([header P1](http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29)). This acts as the antenna. The optimal length of the wire depends the frequency you want to transmit on, but it works with a few centimeters for local testing.
 
 # Short manual
 ## General
 **rpitx** is the main software to transmit. It allows to transmit from:
 - **IQ** files *.iq (can be generated by external software like [GNU Radio](http://gnuradio.org/)).
-- **Frequency/Time** files *.ft (generally used to easily implement digital modes)  
+- **Frequency/Time** files *.ft (generally used to easily implement digital modes)
 
 Usage:
 ```
@@ -27,23 +31,23 @@ rpitx [-i File Input][-m ModeInput] [-f frequency output] [-s Samplerate] [-l] [
 -m            {IQ(FileInput is a Stereo Wav contains I on left Channel, Q on right channel)}
               {IQFLOAT(FileInput is a Raw float interlaced I,Q)}
               {RF(FileInput is a (double)Frequency,Time in nanoseconds}
-       	      {RFA(FileInput is a (double)Frequency,(int)Time in nanoseconds,(float)Amplitude}
-	      {VFO (constant frequency)}
+              {RFA(FileInput is a (double)Frequency,(int)Time in nanoseconds,(float)Amplitude}
+               {VFO (constant frequency)}
 -i            path to File Input
 -f float      frequency to output on GPIO_18 pin 12 in khz : (130 kHz to 750 MHz),
 -l            loop mode for file input
 -p float      frequency correction in parts per million (ppm), positive or negative, for calibration, default 0.
--d int 	      DMABurstSize (default 1000) but for very short message, could be decrease
+-d int        DMABurstSize (default 1000) but for very short message, could be decrease
 -c 1          Transmit on GPIO 4 (Pin 7) instead of GPIO 18
 -h            help (this help).
 ```
 
 ## Modulation samples
 Some modulations are included in this repository and can be easily extended. These scripts create files which can be used by rpitx.
-Some output in IQ (like ssb) other in FT (like sstv).
+Some output in IQ (like SSB) other in FT (like SSTV).
 
-### SSB modulation
-**pissb** converts an audio file (Wav 48KHZ mono only!) to SSB (USB right now) and outputs it
+### Single Side Band modulation (SSB)
+**pissb** converts an audio file (Wav 48KHZ mono only!) to [SSB](https://www.sigidwiki.com/wiki/Single_Sideband_Voice) (Upper Side Band right now) and outputs it
 to an IQ file.
 Assuming your audio file is in your current working directory:
 ```sh
@@ -55,40 +59,39 @@ sudo ./rpitx -m IQ -i ssbIQ.wav -f 50000 -l
 ```
 A sample script `testssb.sh` is included.
 
-### FM modulation
-**pifm** converts an audio file (Wav, 48KHz, 1 channel, pcm_s16le codec) to Narrow band FM (12.5khz excursion) and outputs it to a .ft file.
-Assuming your audio file is in your current working directory
-```sh
-./pifm audio48mono.wav fm.ft
-```
-You could then transmit it on 100MHZ (please set a correct frequency to be legal)
-```sh
-sudo ./rpitx -m RF -i fm.ft -f 100000 -l
-```
-A sample script : `testfm.sh` is included.
+### Broadcat Frequency Modulation (FM)
+**pifm** converts an audio file (Wav) to broadcast FM using Christophe Jacquet (F8FTK) PiFmRds project fork : https://github.com/F5OEO/PiFmRds
+
+See Readme from this project for instructions.
+
+### Slow Scan Television (SSTV)
+**pisstv** converts an RGB picture to a [SSTV](https://www.sigidwiki.com/wiki/SSTV) .ft file.
+The SSTV module will transmit using the Martin M1 encoding mode.
 
-### SSTV
-**pisstv** converts an RGB picture to an SSTV .ft file.
 If you have a JPEG picture 320x256 you can convert it to an RGB picture with:
 ```sh
 imagemagick convert -depth 8 picture.jpg picture.rgb
 ```
-You can then transform it to a .ft file with:
+You can then transmit on 144.5Mhz (please set a correct frequency to be legal) :
 ```sh
-./pisstv picture.rgb picture.ft
+./pisstv picture.rgb 144.5e6
 ```
-And then transmit it to 100MHZ (please set a correct frequency to be legal)
-```sh
-sudo ./rpitx -m RF -i picture.ft -f 100000
-```
-A sample script `snapsstv.sh` grabs a picture from a PiCamera and then transmits it on 50.105 MHz.
+A sample script `snapsstv.sh` grabs a picture from a PiCamera and then transmits it on 144.5 MHz.
+
+### Fast Simple QSO (FSQ)
+**pifsq** allows to send a text with the new [FSQ](https://www.sigidwiki.com/wiki/FSQ) modulation
 
-### FSQ
-**pifsq** allows to send a text with the new FSQ modulation
 It is still under development.
+
 A sample script `testfsq.sh` allows to send a text with FSQ
 
-### VFO
+### Weak Signal Propagation Reporter (WSPR)
+**wsprrpi** allows to send wspr beacon https://en.wikipedia.org/wiki/WSPR_(amateur_radio_software)
+It uses a fork from James (https://github.com/JamesP6000/WsprryPi) project and adpated to librpitx for frequency ehancement and cleaner spectrum (to be confirmed)
+
+See https://github.com/F5OEO/WsprryPi for instructions
+
+### Variable Frequency Offset (VFO)
 A **VFO** mode is provided to allows precise frequency resolution.
 For example to set a carrier on 100MHz (please set a correct frequency to be legal)
 ```sh
@@ -103,3 +106,4 @@ Inspired by
 * http://www.icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter
 * https://github.com/richardghirst/PiBits/pull/18
 * http://www.bellard.org/dvbt/
+