The VHF signal output from the B-Set of the Wireless No. 19 was a weak one with a very short range. The extension Geoff describes as fitted to the M10 B-Set Aerial Mount enabled the G-Rod for the B-Set aerial to clear the top of all the hull and metal of the M10 turret to maximize the range for B-Set communications as much as possible in all directions.
If only the original Mount fitted to the right side hull had been used, the B-Set signals would have essentially been radiating out to the right of the vehicle and blocked to the left. Not a good situation.
David
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