- 20/08/99
- VLF Receiver
- 05/01/22
- IR Beacon
- 17/10/21
- VLF Log
- 20/08/21
- VLF Rx Info
- 17/08/21
- VLF Tx Info
- 06/01/20
- NLOS Part6 - Tests 281219
- 06/01/20
- NLOS Part5 - Tests 231219
- 06/01/20
- NLOS Part4 - Tests 211219
- 24/12/19
- NLOS Part3 - Tests 151219
- 24/12/19
- NLOS Part2 - Rx
- 24/12/19
- NLOS Part1 - Tx
- 24/12/19
- NLOS
- 20/06/19
- IC9700 Send Splitter
- 12/01/19
- 71MHz DATV Amplifier
- 25/07/18
- 77GHz Doppler Module - Part2
- 13/04/18
- DSN Reception April 2018
- 22/03/18
- DSN Reception March 2018
- 07/01/18
- 12:6 Audio Mixer - Testing
- 02/01/18
- 12:6 Audio Mixer
- 16/08/17
- 77GHz Doppler Module
- 14/08/17
- DSG 13Z Lathe
- 02/07/17
- 134GHz Multiplier Block
- 21/05/17
- Microsource YIG Synth
- 13/05/17
- Transfer Relay 24v to 12v
- 13/02/17
- Chirp Tx With Red Pitaya - 3
- 27/01/17
- Chirp Tx With Red Pitaya - 2
- 23/12/16
- Tropo Dec 2016
- 03/12/16
- 11km on 134GHz
- 11/11/16
- Improved 134GHz Rx
- 04/11/16
- GB3KM Waterfall Display
- 14/10/16
- 146MHz Digital Pre Distortion Tests
- 09/09/16
- Boxing up the 134GHz Gear
- 09/09/16
- Getting started on 134GHz
- 11/08/16
- Gigawave 6cm ATV Tx
- 17/07/16
- ADF4252 Elcom Code & 24GHz Beacon
- 29/06/16
- Eshailsat Tx and Rx ideas
- 08/05/16
- Symmetricom 10MHz GPSDO
- 20/04/16
- RTLSDR Si5351A reference
- 22/03/16
- Basic Verilog Code De0Nano
- 08/03/16
- Chirp Tx with Red Pitaya - 1
- 07/02/16
- 3m Dish Refurb
- 07/02/16
- Detecting a Pulsar at 1420MHz?
- 20/09/15
- DSP#3 Weaver SSB Demod
- 15/09/15
- DSP#2 Decimating FIR
- 15/09/15
- DSP#1 IQ Mixer
- 15/09/15
- DSP#0 Learning DSP!
- 06/09/15
- 146MHz RD70HVF1 Amp
- 26/07/15
- Chirp Radar Links
- 03/04/15
- 6m Chirp Beacon Info
- 14/02/15
- 146MHz DATV 2-way 50km
- 20/01/15
- 146MHz DATV 2-way 28km
- 20/01/15
- 146MHz RD06+RD15 Amp
- 03/01/15
- 146MHz Amp Tests
- 01/01/15
- 146MHz DATV Tests
- 19/10/14
- KM Logic Re-Design
- 05/10/14
- Broadband-Hamnet
- 29/08/14
- Live Geiger Counter
- 27/08/14
- Material absorbtion tests
- 24/08/14
- Geiger Counter Setup
- 24/08/14
- Useful links Radioactivity
- 14/08/14
- Pulsed Radar Tests
- 14/08/14
- Chirp Radar Tests
- 21/07/14
- GB3MAN 24GHz Reception2
- 26/06/14
- GB3MAN 24GHz Reception
- 19/06/14
- ATV Dx Gallery
- 16/06/14
- Live Weather
- 28/05/14
- CNC G-Code Simulator
- 20/05/14
- Arduino -1-wire weather
- 01/01/14
- 117km Lightwave QSO!
- 27/12/13
- F1EHN Tracker prog
- 16/12/13
- DL0SHF EME on 10GHz
- 10/12/13
- Simple FFT from rtlsdr in C
- 10/12/13
- Simple Framebuffer Write in C
- 01/12/13
- MMDS Converter on ATV
- 23/11/13
- MK808/PVRUSB2/DigiLite Without Controller
- 17/11/13
- MK808/PVRUSB2/DigiLite
- 05/11/13
- DVB-S USB rx
- 19/10/13
- Lightning but a bit too close!
- 15/10/13
- Nice way of explaining IQ Signals
- 04/10/13
- Building new kernel for MK808
- 29/09/13
- 3.4GHz Alford Slot
- 25/09/13
- GB3KM Website
- 22/09/13
- GB3KM streaming with ffmpeg & Gallery
- 12/09/13
- Ubuntu Nvidea Screen res
- 06/09/13
- Elcom Synths on 9GHz
- 05/09/13
- LM2596 Negative supply mod
- 22/08/13
- 22-25GHz Amplifier
- 10/08/13
- 24GHz LNA box
- 01/08/13
- Most Viewed
- 31/07/13
- CNC stepper driver box
- 09/07/13
- Ka band LNB on 24GHz?
- 14/06/13
- 24GHz Alcatel Tx/Rx Module
- 02/06/13
- Chirp Sounders
- 02/06/13
- Hydrogen Line 1420MHz
- 02/06/13
- 1st 8.4GHz Reception
- 02/06/13
- 8.4GHz Rx Equipment
- 02/06/13
- IPTV
- 02/06/13
- 436MHz DATV Up-Converter
- 10/05/13
- Portable Amplifier box ***
- 27/03/13
- DigiLite
- 27/03/13
- Analogue vs Digital
- 27/03/13
- Weather Sat Images
- 27/03/13
- Spectrian 180W Amp ***
- 27/03/13
- Delayed muting ****
- 27/03/13
- Realtek SDR dongle
- 25/03/13
- Simple Horn
- 25/03/13
- Planets
- 25/03/13
- STARRS Comet
- 25/03/13
- 70cm QRM
- 25/03/13
- Nokia Amplifier Info
- 25/03/13
- EME in 2012
- 25/03/13
- Current Activity
- 25/03/13
- Activities
- 24/03/13
- Activities
- 24/03/13
- 6m Chirp Beacon Idea
- 24/03/13
- Activities
- 24/03/13
- HF Activity
- 24/03/13
- 3.4GHz Airspan Board mods
- 24/03/13
- ATV Equipment Links
- 24/03/13
- 13cm 200mW Comtech info
- 24/03/13
- 23cm ATV Filter
- 24/03/13
- G6ALU Caption Generator
- 23/03/13
- Intro
- 23/03/13
- Digilite Tx Spectrum
- 23/03/13
- 10GHz EyalGal unit
- 31/01/13
- Some photos
- 25/10/12
- 500W+ 1296MHZ Amp Project
- 10/09/12
- ATV Contest 2012 ****
- 29/05/12
- Tropo May 2012
- 17/09/11
- ATV using LED Tx
- 11/09/11
- ATV Contest 2011 ****
- 28/03/11
- Archive3 - DATV Software
- 27/03/11
- Archive2 - DATV Transmitter
- 27/03/11
- Archive1 - DATV System info
- 23/10/10
- ATV over the Pennines!
- 23/10/10
- Tropo October 2010
- 09/09/10
- ATV Contest 2010 ****
- 25/03/10
- 10GHz Narrowband
- 10/09/09
- ATV Contest 2009 ****
- 23/03/09
- 10GHz ATV dx 115km
- 21/03/09
- Repeater Contest 2009
- 25/08/08
- EME in 2008
- 08/06/08
- Summer Fun ATV 2008
- 25/03/08
- Tropo Dx Log*************
- 25/10/07
- EME in 2007
- 24/09/07
- 23cm Tx
- 09/09/07
- ATV Contest 2007
- 22/12/06
- Tropo Dec 2006
- 10/09/06
- ATV Contest 2006
- 25/08/06
- EME In 2006
- 23/07/06
- Tropo July 2006
- 25/05/06
- 1.8M EME Dish Project
- 23/05/06
- Tropo May 2006
- 24/02/06
- 23cm DG0VE Amplifier
- 23/02/06
- Tropo Feb 2006
- 24/11/05
- Tropo Nov 2005
- 10/09/05
- ATV Contest 2005
- 25/08/05
- 13cm Amplifier
- 13/07/05
- GB3YT (YV,YX)
- 26/02/05
- First Reception of EME on 2M
- 25/06/04
- 23cm In the beginning
- 25/03/00
- Useful links 23cm
Cluster Activity
My Weather
ArrayDate:27/04/24 Time:03:00
Temp:-1.5C
Wind Speed:0mph
Wind Dir:157deg
Pressure:1006.16mB
Humidity:83%
Dew Point:-4.9C
Temp:-1.5C
Wind Speed:0mph
Wind Dir:157deg
Pressure:1006.16mB
Humidity:83%
Dew Point:-4.9C
I was playing about with writing to the framebuffer in C to allow me to draw a waterfall from rtlsdr.
This is about the simplest way of getting the spectrum plot of signals from rtlsdr using FFTW routines.
Hopefully someone else will find this useful, it's just what i was looking for initially but never found anything useful on google!
simple_rtlsdr_fft.c
