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- General Radiotelephone Operator (Element 3 (GROL)) »
- FCC Element 3 - General Radiotelephone
478. What is the 6th pair color code in a 25 pair switchboard cable as is found in building telecommunications interconnections?
Pair 6 in a 25-pair switchboard cable is Red/Blue, Blue/Red, as it is the first pair using the Red major color in the standard color code sequence.
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