Wall mounted cable box.
Without mains short circuit bypass, so with dual earth, local and HF separated - not adviced.
Wall mounted cable box.
Still dual earth, but with added mains-current short circuit bypass HF-coil set.
Adviced !
Add-on mains filter with separate earth coil, for bad computer PSU's.
exploded view.
Add-on mains filter with separate earth coil, for bad computer PSU's.
EMC/CE violation
NO mains filter!
completely left out to reduce costs!!
And this is the EMC/CE violating factory......
How to make a VLF/HF common mode suppressor.
Another VLF to low HF common mode suppressor on the roof.
Lots of windings, so optimized for low frequencies.
How to make an arrestor for direct mounting in the coax.
connect with a T-junction, see second photo on top in cable box.
picture © PG9HF
HF lamp-post with EMC problems.
Inside is wrapped in copper shielding mesh.
On a friends site by PG9HF
Click on picture © PG9HF
Electric fence immunisation.
On a friends site by PG9HF
Many ferrite transformers made for a hughe transfer test.
