On Thu, Oct 10, 2024 at 07:39 PM, Donald S Brant Jr wrote:
Would the radio's SSB function work properly with an external dynamic mic in place of the specified electret??
Looking at the schematic, you would likely need some adapting for a dynamic mic.
The circuit supplies a 3.3V (VDD) bias voltage to the mic via a 2.2k resistor: so you would likely need the DC block.
Also, the mic signal is simply received into the processor pin between 10k resistors to power and ground, so it is wired for high impedance.? The low impedance of a dynamic mic wouldn't directly work well, but you could wire in a tiny audio transformer.
?
Perhaps Hans will add software for a PTT on the Tip terminal?
