Dear András Bíró,
Currently I've not started the test, nowadays I'm trying to collect
information about this issue. But after finish the test I'll share the
results.
Yours faithfully,
Alejandro.
Hi Alejandro,
868MHz was better, because the water in the grain absorbs the 2.4GHz
Hi Alejandro,
868MHz was better, because the water in the grain absorbs the 2.4GHz
electromagnetic waves. And I think the soil contains more water.
Could you please inform me about the results of your experiments? I'm
intrested in using these radios in bad environment.
Thanks,
Andris
On Fri,
Dear all,
Someone know how much is the maximum distance to communicate two TelosB
under the soil using antenna of 5 dBi each one and 2.4 GHz? I mean the two
sensors are buried even the antennas as well.
Thanks in advance for any information.
Regards,
Alejandro.
Dear Hamid Rafiei.
Thanks for your answer.
What do you think is the maximum distance in the best case? e.g. in 50 m.
Sincerely,
Alejandro
Hi,
I believe it all depends on the level of moisture in the soil, in case of
a
high level of humidity it wouldn't be much at all
On Friday,
Hi Alejandro,
I would except much less. We tried to communicate in grain (corn to be
exact), and it was less than 1m. Eventually, we used 868MHz, which was
still really bad, but we could live with that.
But anyway, you should try it, it's quite simple.
One more thing: in our tests, it seemed that
Dear András Bíró.
I think probably with 868 MHz was better than 2.4 GHz because the
wavelength is the longest. I was expecting to reach at least 25 m.
Thanks a lot for your information.
Yours faithfully,
Alejandro.
Hi Alejandro,
I would except much less. We tried to communicate in grain
