Cryocable Impedance

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Generally
30-50pF per meter (typically <2m)
265-Ohm, 190-Ohm, 110-Ohm (quoted from various experiments)
SCUBA-2
190-Ohm, 50-pf(?) single wire
ssa-outputs are twice the diameter => 190/4=47.5 Ohm
ACT
~190 ohm
Spider
test cryostat cryo cable: 48" + 43" long, R~90 ohms (round trip) and C~180 pF between pairs
Flight cryostat cryo cable: 3m + 45" long, R~160 ohm (round trip) and C~350pF between pairs.