DRA818U is a FM radio in a module. Just add microphone and AF amplifier + speaker and you can talk on 70cm HAM radio band.
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DRA818U is hybrid module that contains all electronics needed to make a simple FM transceiver that operates on frequencies from 400 to 470 MHz. It's power output is 1W and 0.5W. Features: Frequency …
Read More…DRA818U is hybrid module that contains all electronics needed to make a simple FM transceiver that operates on frequencies from 400 to 470 MHz. It's power output is 1W and 0.5W.
Features: Frequency Range: 400~470MHz Tx/Rx frequency independent Channel space: 25KHz Configurable multi-channels Sensitivity: -122dBm Output power: +27/30dBm CTCSS / CDCSS codes 8 volume levels 8 squelch levels UART interface Temperature: -20°C ~+70°C TX current: 450/750mA * Supply voltage: 3.3~4.5V
You can add Arduino to control DRA818, LM386 AF amplifier, a microphone and a speaker and you can enjoy with your self made HAM radio transceiver.
Check my blog at this link.
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