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IRSE Exam Forum › MODULES › Module 5 › Train Detection v
B3 Impedance Bonds


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B3 Impedance Bonds
Archie Offline
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#1
16-03-2015, 03:43 PM
Afternoon, would somebody be so kind to give me a basic in's and out's description of B3 impedance bonds function with regards to TI21's, and does anybody know the rail hole spacing's between 22mm holes that are drilled into the rail.

Any help would be much appreciated.

Many thanks
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Messages In This Thread
B3 Impedance Bonds - by Archie - 16-03-2015, 03:43 PM
RE: B3 Impedance Bonds - by PJW - 18-03-2015, 06:55 AM

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