"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...
Replies
I have the 915MHz radio from the RCTimer APM 2.5.2 kit, and it has a different range. Just load the default. I see Mission Planner 2.0.14 no longer has an option to upgrade the 3DR radio firmware, or it just won't upgrade this one.
How are people doing the upgrade to 1.9 now? I'm on 1.6, and I don't think that will transmit data -- mine isn't anyway!
http://vps.oborne.me/3drradioconfig.zip
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
I have just found this function in radio.c
set_frequency_registers
EZRADIOPRO_HBSEL
I believe this is the answer am I right
Greetings,
When I inquiry the RSSI my HM-TRP868M using "AA FA 87", it shows 00.
According to data sheet, this is > -100dbm.
Is this normal?
Lawrence
That would be 1/2 watt! That's a honking radio there.
Check your calculation again...
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