How to build a radio telegraph?

I know this question has probably been asked so many times on this sub, but I have additional ideas/questions that may not have been included in other posts.

Anyways, for a new project I’m thinking of building two sets of radio telegraphs capable of both transmitting & receiving messages. I have a couple ideas of how to build a key; I may even just purchase a set online. What I’m more concerned about is how to build the telegraphs with transmitters & receivers. To be completely honest, I don’t know much about electrical components & building gadgets, but I do want to learn. I figured this was a simple yet interesting project to start with.

Basically I want to build a telegraph that I can use to send messages a short distance, like in another room. I want to make a transmitter that beeps & possibly lights up using an LED when transmitting messages, and does the same to the receiving telegraph. I was wondering if I could possibly use a buzzer to make sound when receiving messages, or if I would need a speaker? (I’m so sorry, I really don’t know much about radios, lol. I’m very eager to learn.)

If anyone has any ideas, schematics, guides, etc. including which electrical components I would need, I would greatly appreciate it.

Tl;dr: I want to make a set of radio telegraphs where the transmitting telegraph lights up & beeps while simultaneously making the receiving telegraph light up and beep.

EDIT: I just wanted to make it clear that I would use the buzzer to generate sound, not as the transmitters. I would preferably like a design that uses modern RF transmitter & receiver components.

submitted by /u/jmoody1123
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