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I temporarily disconnected the Heliax cable that brings the 166MHz LO to the LSC rack.
I'm doing a couple of measurement and I'll put it back in as soon as I'm done.
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These are the losses I measured on a RG-174 cable for the two frequencies that we're planning to use in the Upgrade:
@11MHz Loss=0.22dBm/meter
@55MHz Loss=0.41dBm/meter
(The cable was 2.07m long. The input signal was +10dBm and the output voltages at the oscilloscope where: Vpk-pk(11MHz)=1.90V, Vpk-pk(11MHz)=1.82V ) |