On 1/8/23 17:13, Shirley Dulcey KE1L wrote:
It's best to turn off mic bias if you can. But it won't actually matter to
the Softrock because it has blocking capacitors on its I/Q outputs, so that
bias won't reach the rest of the circuit.
So... why bother?
If you use a fancy interface with
phantom voltage support, turn that off; it's a much higher voltage,
nominally 48V, that could cause issues.
Sure. This is comparable to Power-over-Ethernet, which a friend learned the expensive way when connecting a cable tracing aid to a socket which had a PoE-enabled switch behind it.
- Roland 9V1RT
