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Hi all Regarding HP 180 scopes if you ever get mains ripple on the display most probably it is a 10 uf at 100 v axial that requires changing suggest you go for 150 volt at 15 uf Regards Paul

OK, good to know, so I was wrong, no fan. wrote: Jeremy Nichols Sent from my iPad 6.

?? I had a 180 when I worked for -hp-, I don't remember it having a fan. I thought it was a pretty good scope. -- Richard Knoppow dickburk@... WB6KBL

Hi Dave Well, I am interested (especially since I spent some time over at Queensferry and knew some of them), and would *really* like to do it, but I just can't justify the large investment required.

No fans in mine, and I have several in both scope & spectrum analyzer configurations. Common failures are the HV resistors around the CRT, and the output stage resistors in the deflection amplifiers.

Hi, my 180AR doesn't have any fan for sure. Also no fan in any of the 182B/C/T displays that I happened to have seen in the past. HTH Frank IZ8DWF

Greetings, I owned a 180A with 1801A and 1821A plug-ins and I do not recall any fan. Additionally, there is a photo showing the 180A without covers or plug-ins in the 1967 HP catalog and no fans are

As far as I remember ... there were no fans in the 180 series 'scopes or their plug-ins. Could anyone confirm this ? Joel Setton

My logistics would be simple AF. One parcel per person. If the weight is below 2KG, shipping would be 25 EUR per snout with Slovak Governmental, tracked. Austrian post would cost more. Tam With

If I could get to Slovakia, I would do it. Slovak Post is cheap. Or, maybe, JewPost in Austria. They consider the USA as a "semi-local" destination which quite cheap rates. But I have no ETA for

Make on a lot of sense, please some diagram for it.

Well, my only thought is "Yes, that's a pretty significant burden". ;) -Dave

I am. I’m not sure how the logistics of that would work, though, specifically the burden placed on the person who agrees to handle receipt and distribution of the books. Thoughts? DaveD

HP-180-series ‘scopes have passed through my hands but I’ve never collected one. They were HP’s first all-solid-state high-end oscilloscope. Components are densely packed into the chassis and

So once again, is anyone in the US interested in doing a bulk-purchase-to-US arrangement? -Dave

How about an op-amp configured as an inverting amplifier? -Dave -- Dave McGuire, AK4HZ New Kensington, PA

Hello Tobias, some information for your diode power sensor please. Best regards. Francesco. G7OYO

The output of the detector AD8318/17 is positive any idea to make it negative? Please diagram I'm one geriatric old man. Regards. Francesco. G7OYO

Thank you Dave for the imput to this post, I'm aware there is some difficulty fot the detectot part on the power head. I hope if there someone want share is exsperience and like give some sugestion

Currently eBay is showing 1804a 4 channel plugins for around $20-50. The 1804 does 4 channels but no math. The 2 channel units have addition and the specs say when one Chanel is inverted it acts like