GPS receiver data transfer using RF transmission

[nauman]

Hi all

I want to develop a miniature system using GPS receiver, a micro-controller, an RF transmitter and its receiver. The idea is to acquire lat/long of buoy dropped in sea which is equipped with miniature GPS receiver (with associated circuitry) which can send its position (lat/long data) to a remote location 10-20 Km away using some type of RF transmission. During initial search, i came across a "Conexant’s Jupiter Low Power (LP) Global Positioning System (GPS) receiver" and FreeWave’s ZumLink 900 Series Ethernet Radio for RF transmission but i think these are bit costly and overkill for this task.

Kindly help me for selection of low cost commercially available items for this task.

Thanks & Regards

 

[anorlunda]

The transmitter part is the most difficult.

Have you heard of personal locator devices such as Garmin Inreach? It can transmit your position to a satellite, so that you can be tracked over the Intenet.

If the tracking receiver is too remote for ordinary Internet, it could use a Starlink dish to get Internet from satellites. Starlink coverage is nearly (but not totally) global.

Surprising as it sounds, satellites and Internet may be less expensive than old fashioned radio transmitters and receivers.

 

[Borek]

Check solutions used in things like Ardupilot, check what SP9UOB does: https://www.physicsforums.com/threads/sp9uob-p39-or-ballooning-around-the-world.997424/ (he uses SI4464 radio and APRS).

Actually latest Pikuś (SP9UOB-P41) is well over 8 months in the air :)