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Telegraph

Talk to your friends in morse using an old inspired half-duplex old schooled telegraph gadget!

How to use:
1. Sintonize the same frequency as your friend, you can select the frequency with the left lateral slider.

2. You and your friend must have both tx/rx modules disabled. The tx module is the one on the left with the green switch, and the rx is the one in the right with the red switch.

3. To transmit, enable the tx module and press the red button to transmit dots and dashes. When you are done, disable the tx module.

4. To recieve, enable the rx module and you will listen and destroy the buffered transmissions.

If you wanna test, 930MHz is a rx only test frequency (there is a repeating pattern transmitted all the time).

Note: This had to be implemented using http as it's the only protocol currently supported and that brings some difficulties. Simulatenous transmission and recieving works with small stutters between signal frames caused by http request delays. This is mitigated by chunking signal frames together and could be fixed completely by using a full duplex (paired frequencies) approach. This can also be fixed one way by transmitting at double the rate of reception.

Server implementation is basically a queue, so listening is a destructive operation on the signal (no more than 1 transmitter and 1 reciever per frequency).