Pira.cz Technical Forum
Radio Data System (RDS) => MRDS1322 => Topic started by: SteveyD on June 10, 2012, 06:33:49 am
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Jan,
In the MicroRDS user manual;
Figure 5.2.1
Simple Passive Mixer.
Is the resistor value of 1K5 on the Audio/MPX signal for a mono audio input?
How would you handle a Stereo Audio input for this circuit?
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For stereo audio use two inputs instead of one and place two 3k3 resistors. So there will be three inputs and three resistors total connected to the sum point.
Left o--[===]---------\ 2x 3k3
\
Right o--[===]-----------*---->
/
RDS o--[===]---------/ 15k
Of course you will broadcast in mono as there's no stereo encoder.