My SYMMETRICOM GPSDO 090-03861-03 with firmware release 1.0.0.2-01 has a bunch of commands available:

Details
Kategorie: GPSDO

I've done some long term measurements on my GPSDO. The GPSDO has a RS232 based simple command interface.

Details
Kategorie: GPSDO

To have a stable 10MHz reference in my shack, I've ordered a SYMMETRICOM based GPSDO from an Chinese eBay seller. It was delivered in kit form, so no issues with missing CE marking etc.

The GPSDO is build into a sturdy aluminium case with a PCB front panel and an aluminium back panel.

Details
Kategorie: GPSDO

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.

Details
Kategorie: RF Powermeter

With the firmware version 1.8.0 I've introduce the capability to display also the input power in Watt instead of dBm. Simply tap on the unit field on the display to toggle between dBm and Watt.

Details
Kategorie: RF Powermeter

I've introduced with the firmware version 1.7.1 a complexity to this project which may not be suitable to all users.

WIth the firmware version 1.7.2 I've reduced the complexity by removing the remote configuration utilities.

Details
Kategorie: RF Powermeter

If you are using my powermeter software in conjunction with Maki's module and have a unstable readings or sporadic extrem value changes, this is a problem of the CS pin. It may be a grounding issue - Makis is currently analysing the problem.

Details
Kategorie: RF Powermeter

I've developed a new firmware for my RF Powermeter. In this firmware, the user can now program for six calibration points the factors for the polynimial regression functions.

Therefor I've developed a JAVA GUI application for downloading these floating point values to the device.

*** CAUTION ***
All stuff described in this post is ONLY running on an Arduino which runs the OptiBoot bootloader. The EEPROM capability of the OptiBoot bootloader is needed for the features of firmware V1.7.1

I described here a way how to flash the OptiBoot loader on an Arduino UNO clone. For this you need an ISP or a second Arduino to act as an ISP.

Details
Kategorie: RF Powermeter

I've added a new feature to the firmware release 1.5.0 V1.5 1 - power offset V1.5 3.

Details
Kategorie: RF Powermeter

  1. RF Powermeter - Adopted Nextion library
  2. RF Powermeter - Precision
  3. SOTA - Flight deck for KX3
  4. SOTA - DM/BW-094 - Kornberg
  5. SOTA - DM/BM-344 - Kleiner Kulm - My first activation is done
  6. SOTA - Working conditions
  7. Switch-mode DC-DC converter
  8. Frog Sounds - Spurious emissions
  9. Frog sounds - The frog has arrived
  10. Frog sounds - How far can you hear a frog croak?
  11. Frog Sounds - Enhancements to the Frog
  12. Miss Mosquita - a new girl in town
  13. WSPR live data
  14. WSPR some data
  15. RF detectors
  16. WSPR first data analysis
  17. WSPR data collector
  18. PiAware
  19. vna/J ist umgezogen
  20. vna/J moved to a new location
  21. Reflash Arduino UNO ATMEGA16U2
  22. IoT Powersensor #2
  23. IoT Powersensor #1
  24. Arduino Library for AD7887
  25. RF Duinode
  26. ADS-B Filter
  27. IoT System management
  28. IoT MQTT Infrastructure
  29. IoT MQTT configuration
  30. ELECRAFT K-POD

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

Regular supporter of wikimedia