There is a little WaveTek step attenuator in Allen 152 that would appear
to go up to 81 dB of attenuation with BNC in and out connectors on each
side. It's on the right end of the big rarely used rack at about
knee-height. There are also, I believe, some nice Hewlett-Packard
attenuators up in Tom Lee's circuit lab in Allen 219 that have the fancy
little SMA (I think) connectors. It would not surprise me to find that
they have both fixed and stepped attenuators. I don't know who would be
best to ask about borrowing one or more for a short time.
Good luck,
John
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