Outside FM Antenna grounding

[Craig B]

Clicking on your avatar indicates that you are from Norwich, Mike. I suspect that many folk don't bother filling this in on their profile.

No signal failure here, when it comes to enjoying your erudite humour, though.

 

[davidsrsb]

300 Ohm balanced feeder was much lower loss than cheap coax provided that it was run some distance from metal and damp materials

 

[Craig B]

Yes, it was these stand-offs all the way up the tower, with the line twisted along its length all the way...

 

[Gervais Cote]

This is a good link on how to do the job properly:
https://electrical-engineering-port...for-cable-networks-and-antennas-for-tv-part-2
Note that the lightning protection system down conductor does not connect to the coax. The electrical earth and lightning protection are only bonded together in the ground

Thanks for the link and yes, a separate circuit for the lightning protection with a rod higher than the aerial makes sense and will allow me to disconnect the coax from the ground. I will give it a try. Thanks again.

 

[PBB]

It’s not thunder you need to worry about...

I would say the OP is, like me, a francophone. So keep your snark in its holster please.

Regards from New France.

 

[davidsrsb]

Surge suppression on a balanced line is more complicated than for coax, so best to keep the lightning surge away from the feeder in the first place

 

[Gervais Cote]

Surge suppression on a balanced line is more complicated than for coax, so best to keep the lightning surge away from the feeder in the first place

Makes sense, that’s what I will do.