Combined Filters Neighbors Distance Codes The Neighbors Distance Codes (NB-DSC) is a so called "combined filter", a combination of two filters:
Neighbors (NB) is yet another alternative to the old VTracs (VTX). Instead of combining digits by adding 5 it selects the all even digits with the next odd digit up, 0 with 1, 2 with 3 all the way to 8 with 9. It is another efficient way to combine an odd with an even digit.
To show you how to calculate the Neighbors Distance Codes filter select one of the links below for a step by step example.
Neighbors Distance Codes
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