SDRplay Community Forum

Hi,
What would be the strategy to couple the High Impedance port of the SRDDuo to test CENELEC B (25 - 95 Khz) Data over single pole AC (125 V) circuit

I though of a resistor division of 10MOhm and 1MOhm to ground and then place a second divisor of 1KOhm 100 Ohm at the 1MOhm resistor connected to P and N-G to ground - I still believe is too high, but first looking for others

Thanks
E

Do not take chances with unbalanced connections to the AC line. Use a small step/down transformer
PRIMARY: 125 V
Secondary: 5v

Use one decoupling capacitor on each lead of the secondary, then a balanced H resistive 30/60 dB attenuator to the balanced input of the RSP. If signal still too strong, increase attenuation as needed