Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
If you use a very high microwave frequency then a directional antenna might fit in your pocket. When you swing it around it will give maximum signal when pointing in the direction of the transmitter, and "something" can guess at the distance.
I don't know where you will find a microwave transmitter and receiver. I don't know the amount of time a small battery in the transmitter and receiver will last.
A ferrite bar or "loop" antenna for an AM radio is directional in two directions.
A Yagi antenna for an FM radio is fairly large (about 1m squared) but is directional in one direction.
You could be better off using a small GPS receiver then sending the coordinates via a low frequency transmitter to a modern smartphone. Are you looking for a model aeroplane/rocket?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
