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Author Author: olivercohen
Date Created: 30 Jul 2019 6:57 AM Date Created
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Radio frequency

30 Jul 2019

I have a moving vehicle which I need to communicate with.

Radio frequency has its limits with distance.

My question is if I take an aerostat ballon to 400m high

Place a antenna attached to a tracker To always send the waves to the vehicle.

Will that work?

Also how do I tranmit to the aerostat antenna from the ground control 400m down ?

Any ideas?

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aswinvenu over 6 years ago

Hi Oliver,

Can you check TI-CC1120 based solution?
TIDC-CC1120-LRM-868-915MHZ Sub-1GHz Wireless Long Range Reference Design with CC1120 (868 to 915 MHz) | TI.com

https://www.youtube.com/watch?v=wgqtEu5PfAw
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shabaz over 6 years ago in reply to aswinvenu

Hi Aswin,

I'm not sure that would work with CC1120 at that data rate to those distances, because they are using special coding at low bitrate to get the distances (and even if it was, it is not legal to transmit except in bursts (there is a duty cycle restriction, I cannot recall the specifics).
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aswinvenu over 6 years ago in reply to shabaz

Yeh I agree, I just checked the datasheet. -123 dBm at 1.2 kbps.
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aswinvenu over 6 years ago in reply to shabaz

Yeh I agree, I just checked the datasheet. -123 dBm at 1.2 kbps.
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