On Sat, Jun 22, 2024 at 10:39 AM, luigi vkw wrote:
What I have noticed is that the Voltage on transmitter is only 0.4 V.
Luigi, TX voltage 0.4 V is for not transmitting, it's ok. But voltage for transmitting around 5.x V is a bit low compared to the supply voltage. Maybe to much current is drained from the PA?
1. So please show current for all the three reported bands while transmitting or something is wrong in the supply of the PA.
2. Please check the solder joints to connect L502.
3. Please check voltages at S, G and D of Q507 when transmitting.
4. Did you measure the output by an external meter? If not could you do this?
5. Please check the solder joints to connect T501 and T507.
73, Ludwig
