DL2SBA
  • Home
  • CNC
    • MF70
    • Projekte
    • WinPCNC
  • Computer
    • Apple Mac
    • Arduino
    • IoT Internet of Things
    • Microcontroller
    • Raspberry Pi
    • Synology
    • Video
  • Electronics
    • Layouts
    • Measuring Technology
      • GPSDO
      • RF Powermeter
    • Power Supply
    • Tools
  • Ham-Radio
    • About
    • Antennas
    • Contest
    • hamware
    • QRP
    • Satellites
    • SDR
    • SDXG
    • Shack
    • SOTA - Summits on the Air
    • Transceiver
    • Various
    • vna/J
    • WSPR
  • Nature
    • Erdbeben
    • Wandern
  • For sale
  • NOAA
  • SDR

SDR-stick and RTL_433 or how to monitor road traffic

I stumpled across this intersting post on RTL-SDR.COM talking about monitoring TirePressureMeasurementSystems with a cheap SDR stick and a clever piece of software. The rtl_433 software receives and decodes signals transmitted by tire pressure sensors inside the wheels of modern (I assume at least from the last 10 years) cars.

2022 04 03 10 00 03 Window

My initial idea is, that I can monitor the traffic in front of my house - at least traffic of modern cars. As Germany is a car centric country, I expect to catch most of the traffic.

SDR Zuletzt aktualisiert: 21. Mai 2022
Weiterlesen: SDR-stick and RTL_433 or how to monitor road traffic

CW-Sensor-Keyer reloaded

You may have seen my build version of the M0UKD sensor keyer and the Bamatech sensor head. 

As you can see in this post, I've used a simple slide switch to control the power for the sensor keyer. This was a little bit annoying, as you must always check, whether you've turned of the power, when you leave the shack.

As power consumption is not really a big issue - the keyer draws about 2.5mA from two AA-cells. Based on the capacity of an average Energizer Classic AA battery of 1.200mA you will get an on-time of about 300h.

Since many months I've had the idea, to add an electronic switch to the keyer, so it switch of automatically after 15 minutes of idle time.

Shack Zuletzt aktualisiert: 21. Mai 2022
Weiterlesen: CW-Sensor-Keyer reloaded

QO-100 - RF preamp

In search for a suitable pre-amplifier for the SG-Labs PA V3 I was pointed by a fellow ham to this amplifier on Amazon for abt.€17,-

Satellite Zuletzt aktualisiert: 13. November 2021
Weiterlesen: QO-100 - RF preamp

hamware AT-502 - Firmware

Die Orignal-Firmware des Steuergeräts des HAMWARE Tuners AT-502 hat eine Funktion eingebaut, welche an Hand eines gesendeten Trägers versucht die aktuelle Arbeitsfrequenz zu ermitteln und den dazu passenden Speicher auszuwählen.

Dies funktioniert bei CW relativ gut, im SSB Betrieb ist dieses Verfahren nicht optimal. Der größte Nachteil meiner Ansicht nach ist aber, dass man zuerst einer Träger senden muss, damit die Frequenz eingestellt wird.

hamware Zuletzt aktualisiert: 23. September 2021
Weiterlesen: hamware AT-502 - Firmware

RF Powermeter - Firmware 1.8.1

With the firmware version 1.8.1 there are some minor enhancements:

  • Offset value is displayed on main screen. "O" at the end of the unit is removed
  • Waveform display also correct when offset is enabled

Here are the required files:

  • Sketch
  • NeoNextion library
  • AD7881 library
  • AD8318 library
  • PeakHold library
RF Powermeter Zuletzt aktualisiert: 16. Juni 2021
Weiterlesen: RF Powermeter - Firmware 1.8.1

RF Powermeter - Firmware 1.9.0

With the firmware version 1.9.0 there are some minor enhancements:

  • Peak-hold works now, when offset is set
  • Meter and diagram works in dBm and W mode

Here are the required files:

  • Sketch
  • AD7887 library
  • AD8318 library
  • PeakHold library
  • NeoNextion library
RF Powermeter Zuletzt aktualisiert: 16. Juni 2021
Weiterlesen: RF Powermeter - Firmware 1.9.0

CobWeb

CobWeb from eBay

Antennen Zuletzt aktualisiert: 30. Mai 2021
Weiterlesen: CobWeb

New boy in town - QCX-mini

Last weekend I've finished my QCX-mini kit for 20m from QRPLabs.

This was a birthday present from my wife and she is very happy, that the QCX-mini now works great ;-) I'm too ...

On Sunday I was able to make three contacts to the US south coast - 5w and a dipole - thats fine.

IMG 5208

Transceiver Zuletzt aktualisiert: 10. Februar 2021
Weiterlesen: New boy in town - QCX-mini

RF Powermeter - Uploading HMI file

The Nextion display needs the content defined in the file PowerMeter.HMI. You can either upload it with the Nextion editor via a serial link to the display or you can copy the TFT file to an SD card and put this into the socket on the Nextion display.

RF Powermeter Zuletzt aktualisiert: 18. September 2020
Weiterlesen: RF Powermeter - Uploading HMI file

RF Powermeter - Updated display files

I've updated the the display control files to the current Nextion Editor 1.62:

   HMI-file for the editor: here

   TFT-file for direct load to display: here

 

RF Powermeter Zuletzt aktualisiert: 18. September 2020

SOTA - equipment weight list

 

SOTA Zuletzt aktualisiert: 06. Juni 2020
Weiterlesen: SOTA - equipment weight list

Yaesu FT-818 - Modification MIC MH-31

Comparison between an unmodified MH-31 microphone (dynamic mc) at my FT-818 in SSB and a modified (electret capsule)

Transceiver Zuletzt aktualisiert: 16. April 2020
Weiterlesen: Yaesu FT-818 - Modification MIC MH-31

Power usage ...

All data measured using the ELV Energy Master Profi-2 Energy Master Profi-2:

Measuring Technology Zuletzt aktualisiert: 19. Dezember 2019
Weiterlesen: Power usage...

2-tone generator - FA-2-NF etc.

One of my HAM fellows has build a new 2kW HF amplifier. Together with his SDR ANAN-100 he gets really impressive IM3 values.

This inspires me also to do some measurements on my existing HF transceivers - K3 & KX3. For this I needed a two-tone generator.

Shack Zuletzt aktualisiert: 11. Oktober 2019
Weiterlesen: 2-tone generator - FA-2-NF etc.

hamware - FT890 Unterstützung

Ich habe die Firmware für die Hamware Tuner um den Yaesu FT890 erweitert.

In Verbindung mit dem Logbuchprogramm UCXLog folgt der Tuner automatisch der eingestellten Frequenz.

Nähere Infos sind hier zu finden.

hamware Zuletzt aktualisiert: 23. September 2019

hamware - FTDX-5000 Unterstützung

Ich habe die Firmware für die Hamware Tuner um den Yaesu FTDX-5000 erweitert.

In Verbindung mit dem Logbuchprogramm Swisslog folgt der Tuner automatisch der eingestellten Frequenz.

Nähere Infos sind hier zu finden.

hamware Zuletzt aktualisiert: 23. September 2019

Sale

I have some stuff for sale. Please contact me by Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein! if you're interested. Prices are negotiable.

For sale / Zu verkaufen Zuletzt aktualisiert: 01. September 2019
Weiterlesen: Sale

IoT - REDIS server as docker@Synlogy

Some steps

IoT Internet of Things Zuletzt aktualisiert: 27. August 2019
Weiterlesen: IoT - REDIS server as docker@Synlogy

Docker@Syno::Portainer

This is the way I got PORTAINER running on my DS218+

Synology Zuletzt aktualisiert: 18. August 2019
Weiterlesen: Docker@Syno::Portainer

IoT - Tasmota - TH16

Configuration of SONOFF TH16 module with current TASMOTA FW 

IoT Internet of Things Zuletzt aktualisiert: 17. August 2019
Weiterlesen: IoT - Tasmota - TH16
  1. NOAA received @ JN48OQ
  2. IoT - Air quality sensor
  3. Contesting
  4. Bodnar GPSDO - 10MHz Low-Pass Filer
  5. LimeSDR - Housing
  6. LimeSDR - Measurements
  7. JackYack - simple memory morse keyer
  8. SSTV from ISS during February 2019
  9. Docker@Syno::InfluxDB
  10. Raspberry Pi Logbook
  11. Setting up mail on an RPi to an SMTP host
  12. Weather satellites reception - first steps on Linux
  13. IoT - NodeRED - Backup
  14. IoT - Grafana - first steps
  15. IoT - InfluxDB - first steps
  16. IoT - InfluxDB - Setup
  17. IoT - NodeRED - Setup
  18. IoT - InfluxDB - Backup
  19. IoT - InfluxDB - Restore
  20. KiwiSDR - technical details
  21. WIMO Diplexer #22030 - 2m/70cm 100W
  22. ArrowAntennas 146/437-10BP - first measurements
  23. SOTA - Activations
  24. Cheat sheet for HamGadgets Ultra Picokeyer
  25. SOTA - DM/BW-078 - Römerstein
  26. SOTA - DM/BW-855 - Michelsberg
  27. SOTA - DM/BW-659 - Kaltes Feld
  28. RF Powermeter - Precision V2
  29. Weather satellites reception - RTL-SDR optimization
  30. IoT - Setup Raspi 3 for nodeRED & InfluxDB
  • Start
  • Zurück
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • Weiter
  • Ende
Seite 2 von 9
© 2023 Dietmar Krause, DL2SBA. Designed By JoomShaper

Impressum Datenschutz

DL2SBA
  • Home
  • CNC
    • MF70
    • Projekte
    • WinPCNC
  • Computer
    • Apple Mac
    • Arduino
    • IoT Internet of Things
    • Microcontroller
    • Raspberry Pi
    • Synology
    • Video
  • Electronics
    • Layouts
    • Measuring Technology
      • GPSDO
      • RF Powermeter
    • Power Supply
    • Tools
  • Ham-Radio
    • About
    • Antennas
    • Contest
    • hamware
    • QRP
    • Satellites
    • SDR
    • SDXG
    • Shack
    • SOTA - Summits on the Air
    • Transceiver
    • Various
    • vna/J
    • WSPR
  • Nature
    • Erdbeben
    • Wandern
  • For sale
  • NOAA
  • SDR