On Mar 19, 11:53*am, dave wrote:
On 3/19/2011 7:11 AM, RHF wrote:



That should do some good; and usually the more
you use the more effective they collectively become.

If you can/have access to both ends of the Wires :
{ Place a Ferrite Bead [FB] on Each End of Each Wire}
Solar Panel [FB] =Wires-to= [FB] Outback
Outback [FB] =Wires-to= [FB] Batteries
Outback [FB] =Wires-to= [FB House

The chokes should go as close to the noise source as possible. They do
zero good at the other end.

Dave -with-all-due-respect-

Unless {Specifically} You Know The RFI Noise Source :
Every Thing Is The Potential [Unknown] Source :
Therefore Treat Every Thing As The Source

Install FBs on Unit "A" -now- Unit "A" with a FB's
on the Wire within an Inch or two from it is Protected.
Those FBs acting as an RFI Shunts for Unit "A".

However [But] the 25 Feet of Wire(s) going from Unit "A"
to Unit "B" are a 'potential' Antenna. This Antenna may
Pick-Up the RFI being Radiated from Unit "A" an inject
the RFI back into Unit "B" and now Unit "B" passes that
Noise around the rest of the System.

Now install FBs on Unit "B" -now- Unit "B" with a FB's
on the Wire within an Inch or two from it is Protected.
Those FBs acting as an RFI Shunts for Unit "B".

Oops there is also a 25 Feet of Wire(s) going from Unit
"B" to Unit "C" are a 'potential' Antenna.

the process of elimination continues ~ RHF

I have small slide-on FB's on all the Wires on the Solar
Array of now 88 Panels : The Contractors said it was not
necessary & I Said Do It.

I have Clamp-On FBs at the Service Feed Box at the
base of the Solar Array.

I have Clamp-On FBs at the Service Entry Box at the
Controller / Regulators / Inverters.

I have Clamp-On FBs at the Enclosure for the Batteries
about 3-Inches from each Battery.

Except for the 200KW Generator at the Corner of the Pond
going 'On' and the snap-crackle-pop of a string of Power Grid
Towers about a 1/4 Mile Away {Lions Dam to the Valley}
I get an S-Meter "0" on many bands between RF Signals.
and I Run 100 Foot+ SWL Antennas.

I Am One Old Believer In "FB"s Everywhere : Especially
When Wire Runs Get Longer than 6~8 Feet- iane ~ RHF