Yes- I suspect the UHF translators were added to fill in shadows caused by tall buildings. In most areas VHF is preferred because it carries farther for a given power level but metro areas with many tall buildings UHF works better.
Same thing with two-way radio- the high-way patrol will use low-band VHF to cover wide areas out in the country while for city cops penetration in more important than distant so they use UHF freqs like 800-Mhz because it gets down in between buildings better.
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