The PB30-8-L was replaced by theCS605-LandCS610-L. This soil probe had 30 cm rods, and included 10' of twin cable for attaching to the probe. An RG8 coaxial cable (pn 4889) connected the twin lead to the multiplexer or cable tester.
The "-L" on a product model indicates that the cable length is specified at the time of order.