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Re: Peter Keller's Book Mailing Status (Minor Correction)
I haven't been following this thread, but just happened to see this.? For the last 3-4 months, USPS tracking has been almost worthless.? As an ebay seller, I see when I purchase the postage, but
By Dave Seiter · #175915 ·
Re: Peter Keller's Book Mailing Status (Minor Correction)
Media mail from my house to anywhere, even 20 miles away, will first go to Pittsburgh, PA. I'm about 40 miles north of Detroit. That said, I've seen Media Mail packages get to the same city before
By Vince Vielhaber · #175914 ·
Re: Peter Keller's Book Mailing Status (Minor Correction)
Hi EJP, You are probably not missing much by not having the tracking information.? USPS tracking has been virtually useless for months.? Since April or May as I recall one simply sees a couple of
By Jack Reynolds · #175913 ·
Re: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
I would also go for a set of boards.Thank you!Jeff Kruth?In a message dated 1/3/2021 8:10:22 PM Eastern Standard Time, lmcdavid@... writes:?Here is an update showing the list of those I have
By Jeff Kruth · #175912 ·
Re: Peter Keller's Book Mailing Status (Minor Correction)
<SNIP> why not just scan the ticket and upload it here so people can find their own tracking numbers? Because scanning the 7 feet long receipt involves cutting it into segments, scanning them in the
By Dennis Tillman W7pF · #175911 ·
Re: Tek 4041 GPIB Controller
I rediscovered a dozen 4041 tapes that I had stored in the back of a logic analyzer drawer just before Christmas. I worked all week to recover the files from those tapes and posted the recovered files
By Monty McGraw · #175910 ·
Re: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
Hello Larry, you are correct. A group buy for the switch does not make sense. Shipping a board set internationally in a padded envelope is not cheap but a flat rate box to include the switch is much
By Heinz Breuer · #175909 ·
Re: Slightly OT: How can I dissolve Potting Compound?
I can verify this. I was in high school in the late 70's and early 80's and my High School science department had a BUNCH of unused kits designed for teaching things to high school students. They had
By Gordon,KJ6IKT · #175908 ·
Re: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
Larry You've left me off the list of those interested but need a price or something. I've emailed you more than once about this, Regards Esmond Pitt (EJP)
By EJP · #175907 ·
Re: Peter Keller's Book Mailing Status (Minor Correction)
Dennis Rather than create more work for yourself with tracking, why not just scan the ticket and upload it here so people can find their own tracking numbers? I always like to have this information
By EJP · #175906 ·
Re: Peter Keller's Book Mailing Status (Minor Correction)
Hi Dennis, I for one want to thank you again for having done this.? However, I would like to suggest to you and everyone that your 10 day estimate is probably optimistic.? There may be quite a few
By Jack Reynolds · #175905 ·
Re: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
Here's something that may be useful for ideas on the TM500 MF tester stuff. This was a quickie design I had to do near the end of the TM5000 project, for use in manufacturing and field service. It
By Ed Breya · #175904 ·
Re: Spectrum analyzer Tektronix 7L13 on mainframe Tektronix 7603
I just didn't/don't want to send parts 9 time zones away and have it not work! -J-
By J Mcvein · #175903 ·
012-0926-00 Logic Analyzer Lead Set I don't need
If anyone needs a Tek 012-0926-00 Logic Analyzer lead set I have one and I can't use it. It's yours for the cost of shipping and an Egg Nog Latte. Contact me OFF LIST at dennis at ridesoft dot com if
By Dennis Tillman W7pF · #175902 ·
Re: Slightly OT: How can I dissolve Potting Compound?
I wondered what happened to Burgess. I will make a guess at least one of the harmful elements was mercury because Burgess was a major manufacturer of mercury batteries in those times. The batteries
By greenboxmaven · #175901 ·
Re: I built a TM500 mainframe tester, and updated the design. Someone might find this useful?
Here is an update showing the list of those I have on record who commit to reimbursing for the cost of board sets for Jared Cabot's TM500 tester, as of this afternoon. Please check the below list to
By Larry McDavid · #175900 ·
Re: Spectrum analyzer Tektronix 7L13 on mainframe Tektronix 7603
Hi Jim, Thanks a million! I hadn't thought to look in the mechanical catalog, nor would I ever have. I'm grateful for your superior search-fu! I'm scratching my head about the SC-cut bit, so your
By Tom Lee · #175899 ·
Re: Slightly OT: How can I dissolve Potting Compound?
The flash-point of acetone is, or about, 0' F. MEK is, or about, 20' F. The flash point is a crude indication of how "easily" something can catch fire, if there is a suitable ignition source. MEK is
By Roy Thistle · #175898 ·
Re: Odd 2247A problem, looking for insight
1/2 watt transmitter power at the right frequency gives you 1/4 watt per resistor.? If there were any snubbing diodes in the amplifier, then frequency becomes less important. Then there's likely no
By Harvey White · #175897 ·
Re: Odd 2247A problem, looking for insight
some more data on this odd fault: 1. the resistor is 1/4w, fairly big to burn up. 2. when set to DC coupling, both inputs measure almost exactly 1Mohm with my 34401A. 3. vertical cal is good on the
By walter shawlee <walter2@...> · #175896 ·