Hi Ashton,
You might want to watch my eBay sales for the next several weeks. I am
helping a widow dispose of a HUGE estate left by a very smart Tektronix
microwave engineer. Right now, we have 90 auctions on with lots of
terminators, adapters, attenuators, etc. and will have lots of other stuff,
too. I have seen some of those BNC/binding post ¡°cans¡± in among the other
stuff and I have more than I will ever use already. When I say HUGE estate,
I mean a 2500 square foot house with a full basement absolutely FULL of
stuff . . . upstairs and down . . . you can barely walk around in it . . .
in some cases, you can¡¯t! The stuff is packed so densely that you simply
can¡¯t see all of it until some of it gets sold. Also, there are 8 storage
lockers full and one of them is about the size of a 4 car garage. Some of
the aisles between the shelves are packed full, too, so you can¡¯t see all of
the stuff in the storage lockers either. This guy had ALL kinds of stuff.
Lots of Tek. Lots of HP. Machine tools. Hand tools. Hundreds of musical
instruments. thousands of books, 6 Mercedes Benz cars. One Porsche.
Motorhome. Guns. Several early Edison phonographs and lots of wax
cylinders. Tons of parts . . . all kinds. I will not live to see the end
of this estate sale. Unfortunately, it is 40 miles from my house . . . My
eBay name is w7ni. Take a look. I already sold the Bird wattmeter and a
nice Tek 191, sorry. Coming soon: LC130 meter, TM501, 321A, P6015 HV
probes, 109, 2710, etc. etc. Also lots of 11K mainframes and plugins and
7K, too, if I can figure out a good way to ship them. I think I¡¯ll keep the
576 . . . The widow is keeping the 492A since that was one of the
engineer¡¯s projects. I think this guy was KING of the pack-rats.
Stan
_____
From: TekScopes@... [mailto:TekScopes@...] On Behalf
Of Ashton Brown
Sent: Wednesday, February 07, 2007 10:34 PM
To: Tekscopes
Subject: Re: [TekScopes] Re: AM501 Stuff (op-amp references)
Note that there are BNC adaptors on an extruded oval alloy shield which
shrouds right down to the faceplate plane (at least hP sold these -
probably others.) Wish I had a few more of these. With the shield
physically connected to the black/common binding post, you have
..almost.. a fully shielded 'can'.
Worked fine for the few-?V noise floors of the various sensitive good AC
meters du jour.
(My lovely Racal-Dana 9300, good down to Boltzmann noise and to a
phenomenal MHz top-end RMS, ~20 MHz at 6:1 crest IIRC? - natch was
already BNC equipped.) Very handy with it's output amp sent to an
accurate DC DVM, when you care about <0.1% relative levels.
Ergo "binding posts" need not be a huge handicap - anywhere near audio freq.
Ashton
