Hi,
Hope you don't mind me bringing this thread to life again- it looks like the right
place to append a few questions.
I'm new to this forum, have electronics background but haven't been working in
the field for donkey's years and am very rusty and the grounding issue is
stopping me from going ahead with my home project (SAT dish -> 4 quattro
LNBs -> cascadable multiswitch -> 12 outlets). I have 3 phase power in the
house, so all equipment may not be on the same phase (not sure if this brings
up any additional possible problems)
Houston gave an extensive description of the grounding points to cover.
From the information, it looks like it is best for me to use the ground blocks on
the outside (doesn't attenuate the signal) and add a surge protector in the
electrical utility box where the fuses are. I'm OK with this but was wondering if
someone could explain whether additional grounding of the equipment inside
the house is needed and how it is done. I have attached a pic of a setup where
the equipment is grounded - it uses the"grounding block" type arrangement.
I'm thinking that grounding the coax at two ends (at the dish and at the input to multiswitch) will introduce a ground loop.
Secondly, I have the situation where :
- equipment (multiswitch etc.) is on ground floor
- want to mount dish/antennas on 2nd floor balcony
- roof is above 3rd floor (there is lightning grounding/protection on the roof
connected to 3 corners of the house - not to the corner where the dish will
be(when you have no problems trust the electrician to create them for you

)
There's metal drain pipe from roof to all 4 corners of the house.
To ground the dish/ground block, I need to pull ground wire from the roof down
to the second floor balcony - does this make sense/create any problems