Hmm . . .
Having just had a good 'rummage' in the bowels of my grotto, I have resurfaced with a reel of 6-core, three pair, CW1308 cable.
The next steps will be to fit a battery of cells to the
Tester 301C, measure the length of its pair of test leads, loop one of the pairs of the CW1308 cable at its far end, connect the looped pair & one of the other open-circuited pairs to the two pairs of input sockets of the
301C and thus determine the length of the CW1308 cable, by use of the
301C in differential mode. (Having remembered to subtract the length of the test leads from the result obtained.)
Then some thought will need to be applied to the method of connecting that CW1308 cable to the
RJ11 sockets of the
VC-230N and the
HG612. Perhaps the simplest method will be best? Take the shortest
RJ11 to
RJ11 lead from the multitude that are 'held in reserve', sever it at the mid-point and attach each half to the two ends of the 'local loop'.
So yes,
Les, a test with a longer 'local loop' will be possible. However I think I should repeat the last test (F3-Test) -- in view of the anomaly that Our Leader,
Kitz, has noticed.