开云体育

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

I don't claim to know much about scaler network analyzers, so what I say might be wrong. I don't see how you can consider a *scaler* network analyzer able to characterise S11 and S22, since both S11

If both DMM meet your needs, then the chance it will work coming from unknowns via eBay, and easier to maintain DIY is your goal, the 3456a. If you need more updated features including amps but are

Hi: The most accurate way of characterizing S11 or S22 is to use a scalar network analyzer with a bridge and precision air line. The cal load is a precision load that's just slightly off from 50.0

The HP3468A can be programmed via the HP-IL -- the proprietary Hewlett Packard Interface Loop -- so it can attach to calculators (HP-41C), printers and storage

Dave, Yes, backing up on floppy will save those calibration constants (and other stuff as well). That way, if you have to replace the processor board, you don't have to recalibrate everything. You

This is a good point too, Thanks. Antonio I8IOV

Yes, that would be my next try, though I have to build some suitable extensions for the probe tips in order not to remove the panel. Merry Christmas, Antonio I8IOV

The cal kit the 8753 is supposed to work with is the 85032B - see the 8753 manual. The 85032B needs the extender, as I