Steve,
Depending on what level on CM108’s GPIO triggers PTT (low or high), there are two connection variants (red or blue).
Here’s how it will look like for Digirig 1.9 according to the schematic above:
Steve,
Depending on what level on CM108’s GPIO triggers PTT (low or high), there are two connection variants (red or blue).
Here’s how it will look like for Digirig 1.9 according to the schematic above:
