I'm really new to electronics and thought I'd build a simple walkie-talkie as a hobby and education project. A friend suggested I consider using the TWS-BS-6 and RWS-374-3 for the radio transmission and reception. But when I looked at the specification sheets here:



There doesn't appear to be analog input or output pins on these boards. I see digital input/output pins though. If I were to use them, do I need to consider the use of analog to digital converters and digital to analog converters as well? I want to make sure I'm not reading these data sheets incorrectly.

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    \$\begingroup\$ The receiver has a linear output pin and so this is half the battle and, you may be lucky in that the transmitter will take a linear input on its digital in pin. But, these are really cheap squalid gadgets and provide very little user information in the data sheets. \$\endgroup\$
    – Andy aka
    Feb 4 '19 at 16:27
  • \$\begingroup\$ Thanks Andy, I haven't had any luck receiving a signal on the linear output pin. My audio circuits produces the signals I expect when connecting to other electronic components. Is there another pair of FM transmitter/receiver pair you can suggest for analog audio transmission that are roughly as affordable? \$\endgroup\$
    – John
    Feb 8 '19 at 17:50

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