On Tue, Apr 8, 2025 at 02:11 PM, WB9YXA wrote:
The Duty cycle on the Bias SMPS always shows 0%, even as the current jumps around in the red.
This is a bit different than some others have reported, where their bias smps is maxed out.
This suggests that the processor may be sensing a higher-than-needed current, and trying to reduce it.
Maybe this suggests a problem with the bias control circuit (Q501, Q502, Q516 and surrounding components), or some other signal shorted to the tx_bias line.
This really is a tricky problem.
