09-30-2024, 10:23 PM
So, first, the additional whining was caused by ... my rear power strip.
It has a USB converter in it (I need it like a rabbit needs a stop light), and it was causing that. In addition to my lighting causing the rumbling. Without those two the radio is quiet.
A hum really depends on the polarity of the plug when plugged in. This is why I ordered polarized cords.
But with the isolation transformer it hums always: no Ground.
So, my shortwave works fine, and my BC does not.
Strange, as all coils are good, the switch is good....the capacitors (micas and a padder) are left to check.
Tomorrow I hope to find out what it is.
It has a USB converter in it (I need it like a rabbit needs a stop light), and it was causing that. In addition to my lighting causing the rumbling. Without those two the radio is quiet.
A hum really depends on the polarity of the plug when plugged in. This is why I ordered polarized cords.
But with the isolation transformer it hums always: no Ground.
So, my shortwave works fine, and my BC does not.
Strange, as all coils are good, the switch is good....the capacitors (micas and a padder) are left to check.
Tomorrow I hope to find out what it is.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
