Cortney, Geehovah ...
From the same reference material ...
The J was initially equipped with the AWG-10B with a Doppler Spectrum Processor with all connections gold lined which gave a much cleaner picture than the FGR.2's AWG-12. But some Nav's felt that the 10 was not so useful at close range, lacking the fine-scale tuning for short-range returns.
Best ...
Coff.