开云体育

Dr. Joel is a great, helpful guy. Merry Christmas all, -John ==============

I suspect you are probably right about it being unrepairable except by Agilent. I've not looked, but I doubt schematics are available now, but perhaps they might be when is 20 years out of

Hi Dave: I stand corrected, you can not measure phase angle with a SNA, but you can make a more accurate |S11| measurement with the SNA. An air line is very different from a sliding load. If a

I hear what your saying about the ebay sales of used gear. Got the Fluke 8050a in today that I took a chance on. The seller claimed to have not tested it, yet took the time to photograph it with the

Thanks. I'll keep watching eBay and see what comes along. Regards. Max. K 4 O DS. Email: max@... Transistor site http://www.funwithtransistors.net Vacuum tube site:

Worse. It's likely chock full of custom MMIC's, sole sourced by Agilent. The stuff ceased to be repairable probably more than 20 years ago. -John ==================

And I'm sure the thing is completely unrepairable except by Agilent, schematics are not available, and once it goes out of support that is basically the end of that.

Agreed. Note that the 8754A(?) computer based VNA that went to 18 GHz cost prehaps $80,000 in 1970 (a guess). Probably more w/ options. That's $450,000 in today's deflated dollars, so $700,000 is not

Agreed. That is why I was surprised when someone said a scalar one was more accurate. Agilent sell a VNA for 110 GHz. At $691,437 for a 4-port model, I don't expect Agilent sell too many of them! If

Hi Folks, I've been thinking on upgrading my HP5328a's fan wich is so noisy that I cannot make any QSO while it's on. Anyone ever thought about replacing it with a DC Brushless Computer Fan like ADDA

You can use a SNA for quick and dirty tests, comparing a known, high quality, component to the DUT, especially if you have a Storage Normalizer, but in no way is an SNA a substitute for a VNA. The

That was my belief too - at least in the context of typical test equipment. I would not be surprised if there other techniques applicable to standards labs, which are not too practical for commerical

Nothing special by today's standards but in 1952 it was. I'll see if I can dig up the information that was sent to me. Here is a description of the last of the series the

What was so special about the 202? Are today's generators as good?

I'm thinking of getting a 704X for "fun". But the one being offered has a delaminated e'staic bed. Anyone have one for ??? -pete

I've been adding to my collection of HP acquisitions, from what I've been able to find in the search of patents BRC had some interesting on creating FM modulation. Their 202 series FM generators were

There were two companies with Boonton in their name Boonton Electronics. Now a division of a British company boonton.com if interested. Their two biggest contributions were a C and L bridges that

A couple weeks ago was a very very clean 250-A, have you checked the completed items. The seller was only asking something like $50 for it. Was listed at least the first time with no bidders, didnt

Hello, I am looking for a HP 8554B rf section for my 141T spectrum analyzer in working condition at reasonable cost. I am also looking for a HP 8444 tracking generator to go with it. Shipping to

A well calibrated VNA is the best way of measuring S11/ S22. A broadband cal kit load is as close to 50Ohm as HP can make it. A slight mismatch at the end of an air line will allow you to normalise