List,
Two Points
1. Switching regulator power supplies are here to stay and will replace most
transformer types as the are cheaper, smaller, and more energy efficient. They
have improved to the point of being used in medical equipment for patient
monitoring equipment that picks up milli-volt signals from the patient
electrodes.
2. It is very simple to use a cheap all band AM-FM shortwave receiver with an
isolation cap to the antenna. Cheap, quick, and efficient. BTDTGTTS. What one
is interested in usually is that there is interference, not its exact level or
wave form.
Regards,
Perrier
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