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Re: scanned: Common Parts Design Catalog #1 + Agilent/hp users group
Kurt & Pete,
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Thank you so much. It takes a village to keep old Tektronix CRT stuff alive. Glad to warm myself by this village fire. Kindest regards, George On Aug 20, 2018, at 8:00 AM, walter shawlee <walter2@...> wrote: |
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475 CRT
I am offering these to the members first before Ebay. I am parting out three 475's so have three good CRT's for offer have tested them all come on have a trace and trace moves with vert. and horizontal position controls.
These were damaged or incomplete scopes missing vertical side and other parts also bunch of broken knobs. Also have the HV stuff if needed plus CRT tunnel stuff. Have two A9 main boards look in good condition and main transformers some case stuff, delay coil etc. Asking $65.00 for each plus shipping, ask about other stuff on price. These are real clean look very nice. Jim O |
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Re: Machinable Potting Material ???
Paul,
Devcon makes two metal filled epoxies which would probably not make great potting material because of conductivity. They are outstanding repair materials however. The original one is Devcon A. It is steel filled epoxy putty and is very similar to JB Weld. The two Devcon F compounds are aluminum filled epoxy. The original Devcon F is just like Devcon A except for the aluminum content. However, Devcon F-2 is POURABLE! It would probably work well for what you intend. I was told years ago that these materials were 80% metal although I do not know how they do it. I had a cracked injection mold years ago which we needed to get some parts out of before it went out for repair. High temp Devcon saved our butts! Jack Reynolds |
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Re: scanned: Common Parts Design Catalog #1 + Agilent/hp users group
walter shawlee
many thanks for the IC catalog scan.? excellent!
the hp/agilent users group has also moved to this server. you can now find them at: /g/HP-Agilent-Keysight-equipment all the best, walter -- Walter Shawlee 2 Sphere Research Corp. 3394 Sunnyside Rd. West Kelowna, BC, V1Z 2V4 CANADA Phone: +1 (250-769-1834 -:- We're all in one boat, no matter how it looks to you. (WS2) All you need is love. (John Lennon) But, that doesn't mean other things don't come in handy. (WS2) |
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Re: scanned: Common Parts Design Catalog #4, Electro-Mechanical, Jan 1989
Ditto. These are great!
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-- john, KE5FX -----Original Message----- |
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Re: scanned: Common Parts Design Catalog #4, Electro-Mechanical, Jan 1989
Great reference and a very nice scan. Thanks!
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Bob. -----Original Message-----
From: Kurt Rosenfeld Sent: Sunday, August 19, 2018 12:23 PM To: [email protected] Subject: [TekScopes] scanned: Common Parts Design Catalog #4, Electro-Mechanical, Jan 1989 This scan was made possible by Pete Lancashire. |
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Re: tektronix 214 option 94/ Li-Ion fork
Hi Miguel,
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What modifications did you make to the charger circuit to adjust it for the different charging requirements (current limits, voltage cutoff point, etc) of Li batteries compared to NiCd batteries. Can you do a test with the scope on (two traces on the screen) with a fully charged set of batteries and see how long it lasts. Dennis Tillman W7PF -----Original Message----- -- Dennis Tillman W7PF TekScopes Moderator |
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Re: tektronix 214 option 94
On Sun, 19 Aug 2018 13:38:55 -0700, you wrote:
Not in normal use, no. Unfortunately, there's a lot of them where someone just took the probes anyway, they do plug in, but it's internal. Ask me how I found this out... Harvey Dennis Tillman W7PF-----Original Message----- |
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Re: tektronix 214 option 94
Scope probes are not detachable for any 211, 212, 213, or 214 scope.
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Dennis Tillman W7PF -----Original Message----- -- Dennis Tillman W7PF TekScopes Moderator |
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Re: 7L13, more exact frequency readout
Hi again
Now I have done quite a few measurements with my 7L13. I just used a know frequency source to tune it into the frequency I am searching for and then I do the measurement. This works well enough for my zero span measurements with resolution of 300kHz. I did buy a frequency meter for up to 5.8GHz and tried to correlate the frequency of the YIG oscillator with the voltage between pin 6 of U2110 and ground with a more precise voltage measurement than the frequency readout contains. Regarding phase locking of LO1. According to the manual, the span is done in the following way: = 5MHz/div: Main coil of the YIG2MHz/div to 100kHz/div: FM-coil <=50kHz/div: The phase lock loop of LO2, and then the LO1 can be phase locked. I found out that the plugin need through calibration since the center frequency moves quite a lot with changing span. But the nice thing is that I think I have solved the EMC problem the setup was supposed to help solving and my 7L13 is very helpful in my EMC precompliance toolset. Regards Gudjon |
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Tek 545 Scope, with tubes, seems intact, but listed as "for parts only" on eBay $100
hi,
Spotted on eBay: Tek 545 with tubes for parts... $100 located in: Crimora, Virginia, Don't see a scope trace in the photos, but perhaps intensity adj. low, or HV trans. issue ? Anyway, all those tubes, seems reasonable. { no affiliation} |
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Re: Concentric A and B time-base knobs/interlocking
Indeed and almost too easy to fix! It turned out that the coaxial wire going to the ext Z-axis BNC had come adrift. Re-soldered and now z-modulation is functioning, but still no bright-up on "A INTEN" and odd behaviour of "B DLY'D" scans, so back to the task of replacing the timing board with that from the parts-donor.
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I'm looking forward to having this in a state where I can do a full calibration. Colin. -----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Raymond Domp Frank Sent: 18 August 2018 15:41 To: [email protected] Subject: Re: [TekScopes] Concentric A and B time-base knobs/interlocking Interesting... Raymond |
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Re: Machinable Potting Material ???
Just try a Helicoil first,
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I just fixed some stripped bakelite knobs from a 1920's radio using 4BA Helicoils - worked great! Adrian On 8/18/2018 10:55 PM, Paul Koretko wrote:
Greetings, |
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Re: Machinable Potting Material ???
Epoxy resin mixed with enough ground silica to make a stiff paste then rammed into the hole
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Robin On 19 Aug 2018, at 05:45, ¸é±ð²Ô¨¦±ð <k6fsb.1@...> wrote: |
Glydeck
Raymond Domp Frank
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