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Date
Re: Can anyone recognize this HP Computer? Workstation?
I'll see if I can get some help to get them out of my storage building I also have an unopebed IOMega 20NB Floptical drive. A friend wants the National Semicnductor VAX memory boards for his system or
By Michael A. Terrell · #143680 ·
Re: HP 8568A YTO UNLOCK repair
Thirty Kay, The RF sections of the 8568 and 8566 are 2 different beasts. There is very little the same in the RF paths. The control, sweep, and tune circuitry is similar in some respects, but
By Don Bitters · #143679 ·
Re: still possible to buy manuals from Artek media
It seems Gmail is getting worse and worse all the time. :-( -Dave
By Dave McGuire · #143678 ·
Re: still possible to buy manuals from Artek media
Mystery solved! The file came as a notification directly from Dropbox, which got filtered by my email service... Thanks, Ms. L! Radu. [email protected]> wrote:
By Radu Bogdan Dicher · #143677 ·
Re: HP proprietary ICs
The NSN statement on the quote explains it, and indicates the market they're serving. If you need that component to satisfy a military contract, buying a counter on eBay isn't an acceptable way to get
By Dave McGuire · #143676 ·
Re: HP proprietary ICs
Don't they realise the quote vastly exceeds the value of the counter? You could buy many working counters for their silly price quote. David
By factory · #143675 ·
Re: Re-capping an HP-130 Scopes
Variacs do no limit the current, if one of the electrolytics decides to pass a lot of current while reforming, the fuse will hopefully blow instead of burning the transformer winding. There was an
By factory · #143674 ·
Re: N9020A
On the other hand, Keysight repair prices often exceed the price to buy another unit surplus.
By Peter Gottlieb · #143673 ·
Re: Can anyone recognize this HP Computer? Workstation?
Yes, we'd definitely give those a home at the museum. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
By Dave McGuire · #143672 ·
Re: Field test 11970 harmonic mixers
Mike Thank you very much for your reply. Armed with your practical experience I very cautiously measured my 11970A and obtained 0.72V in got directions. I checked it afterwards and all is well, great
By Dave G8KHU · #143671 ·
Re: 5342A: sometimes counts, sometimes not
The 500 MHz - 18 GHz input is the tricky part of the 5342A. I happen to own 2, plus a parts mule in my cellar. The high input range uses HP custom built circuits making repair uncool at best,
By Wilko Bulte · #143670 ·
Re: Field test 11970 harmonic mixers
Dave ¨C I have done exactly what you describe with the DVM in the diode mode on the IF port. Typically, I got close to 0.77 volts in both directions. Going to the LO port will not work as it has a
By Mike Feher · #143669 ·
Re: HP proprietary ICs
What are they = expensive! I am currently bringing three 8601A's up to spec and decided to try this company to purchase some misc parts for them. Well, I saw your post and decided to request a quote
By howdyrichard · #143668 ·
Re: Re-capping an HP-130 Scopes
On 4/20/24 07:49, Bepi wrote: > I am jumping in this discussion because I am trying to restore a 130 scope too and , being unexperienced, I need advice. > I have just started testing by powering the
By Dave McGuire · #143667 ·
Re: HP54501a oscilloscope repair. Bad display
hello Wilko, thanks for the tip. Changing the manufacturer's name did not solve the issue (none of the 7 available worked), yet removing the "check ID" option did result in the programer reading the
By pierre kaplan · #143666 ·
Re: Testing Scope Probes
After a bit more playing about, I think some of the fast and slow ripple is due to the limitations of the Vrms measurement that I have done with the scope. The accuracy of this is limited by the scope
By jmr · #143665 ·
Re: Re-capping an HP-130 Scopes
I am jumping in this discussion because I am trying to restore a 130 scope too and , being unexperienced, I need advice. I have just started testing by powering the scope slowly with a variac. All
By Bepi · #143664 ·
Re: HP 130A restoration
I just received from Ebay an original manual (mod 25 to 724) with schematics which are completely readable, in the fine print parts too, which is not the case for the one I found on the web. If
By Bepi · #143663 ·
5342A: sometimes counts, sometimes not
Hello there! My microwave counter is faulty. Time ago, it stops counting sometimes. Nowadays, it counts sometimes. *I'm talking about 500 MHz to 18 GHz input.* Always shows zeros in the display. * *
By RubenRubio · #143662 ·
Re: still possible to buy manuals from Artek media
I ordered a manual set for an 8018A a few days ago and got the download link about 3 hours later
By Adrian Nicol · #143661 ·