Karl, DK5LP, hat mich auf eine Besonderheit des Logbuchprogrammes RUMLOG für den Mac aufmerksam gemacht.
Dieses nutzt nicht den bisher implementierten IF-Befehl des Kenwood-Protokolls sondern den FA-Befehl.
Ich habe die Firmware entsprechend erweitert, somit sollte auch RUMLOG funktionieren.
Die Beschreibung, entsprechend ergänzt, ist hier zum runterladen.
I've build a simple distribution amplifier for my GPSDO.
My SYMMETRICOM GPSDO 090-03861-03 with firmware release 1.0.0.2-01 has a bunch of commands available:
I've done some long term measurements on my GPSDO. The GPSDO has a RS232 based simple command interface.
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.
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.
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.
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.
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.
2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.
© 2021 Dietmar Krause, DL2SBA