Discussions

HM-TRP 868 vs. 3DR Radio Config 0.9

Posted by Marcin Krawczyk on December 3, 2012 at 11:28am

"Homemade" HM-TRP 868 MHz identified as:

SiK 1.6 on HM-TRP

FREQ_868

In tool for Min Freq default value is 868000, for Max Freq is 869000, BUT in both dropdown lists I have:

902000

907500

915000

921000

928000

433050

434040

434790

435000

Is this correct?

PS. Same in Mission Planner...

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  • MHefny July 17, 2014 at 9:06pm

    I have a question .....  using a telemetry of 433 MHz can I change frequency to 900MHz  internally using firmware or this is a hardware feature ... the datasheet says that "Frequency range = 240–960 MHz"

    so are there variant of the IC itself for different frequency ranges or this is a single IC

    • MHefny > MHefny July 17, 2014 at 9:11pm

      I have just found this function in radio.c 

      set_frequency_registers

      EZRADIOPRO_HBSEL

      I believe this is the answer am I right

  • This reply was deleted.
    • This reply was deleted.
  • Developer
    Andrew Tridgell December 5, 2012 at 12:43pm

    Hi Marcin,

    I think you will need to use the AT interface in a terminal program to set the frequencies. The 3DR tool that Michael wrote is meant for the 3DR radios, which don't (yet!) come in a 868 variant.

    See the wiki page for information on the AT interface.

    Cheers, Tridge

This reply was deleted.

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