Why wouldn't you just ship them back for calibration? They should be able to replace any damaged parts and provide you with new coefficients. Unless you are setup with everything needed to check them, I wouldn't mess with them.
A cal kit without the constants doesn't seem overly useful to me. I'd like to think another similar kit would get you pretty close though.
I like that the Keysight kits all use fixed cal constants that are the same with each kit(same with Maury Microwave for the most part).
Why wouldn't you just ship them back for calibration? They should be able to replace any damaged parts and provide you with new coefficients. Unless you are setup with everything needed to check them, I wouldn't mess with them.
I never said I want to mess with them. I would like to know how big of an error I have to expect
if I use the cal constant from another identical kit.
Are the manufacturing tolerances between different sets that big?
as for calibration by anritsu, I dont know if you have had to deal with them in the past or not, but in my 3 experiences with them
they are simply the biggest aholes in T&M compared to my similar experience with other manufactures. I'm afraid they are gonna charge me $2k-$3k for calibration if they even accept it from an individual/hobbyist. But I will contact them
yes I would love to buy a brand new keysight kit too. 85033E -> C$5900 (incl tax)
Anritsu wants C$2000 (tax incl) only for calibration plus extra (God knows how much) for repair or replacement of each damaged part
I bought my (non working) Agilent ENA E5062A with option 250 (full two port S-param) for $1270 delivered and repaired it and
it is working pretty good now.
so i went and bought the Anritsu cal kit for $600 (probably a mistake??) which as I said is in pretty good shape at least visually (I dont have
precision gauges to measure the dimensions etc...) and it is complete and the pieces work fine and do the calibration but since i dont have the cal constants I know I am off.
So I was thinking if I get my hands on a floppy from another unit how bad it could be? although at the moment I have no source for that floppy either![]()
Kirkby had made a video showing calibration using bad standards and how easily you could fool yourself into thinking things are fine when in fact they are not.
I'm excited to see the next generation of low cost VNAs as they push for 6GHz. Crazy....
any comments on the quality and durability of the Dr Kirkby's cal kit? does anyone here have experience with them?
where did he claim he worked for a company that they made antennas with overstated specifications?
A cal kit without the constants doesn't seem overly useful to me. I'd like to think another similar kit would get you pretty close though.
I like that the Keysight kits all use fixed cal constants that are the same with each kit(same with Maury Microwave for the most part).That's also my thinking. I dont think that manufacturing tolerances between different sets are that big to make a big impact
I am not looking for like metrology grade measurements!
as for keysight, I am not sure about that. As far as I know, the cal constants are tied to the set because they are measured individually.
It is usually written on the floppy that comes with the cal kit that it belongs to the kit with such S/N. Although there are
tons of these floppy data sets being sold on eBay without the cal kit !
if the Keysight ones are not tied to the set, then perhaps I am wrong about the Anritsu being tied to the set either.
Kirkby had made a video showing calibration using bad standards and how easily you could fool yourself into thinking things are fine when in fact they are not.
I found this ironic, because by his own admission he used to work for a company where they made antennas with overstated specifications close to BS.
I'm excited to see the next generation of low cost VNAs as they push for 6GHz. Crazy....
One should not allow themselves to be fooled by the high frequency limit the seller claims. Always look at Calibration standards characterization, if the seller supplies properly characterised cal kits. Otherwise you will be buying a brick or a gizmo with a much lower useful frequency range.
any comments on the quality and durability of the Dr Kirkby's cal kit? does anyone here have experience with them?
i've been using Kirkby SMA version for 4 years... quality?...
3-does anybody have the cal definitions for Anritsu 3750R cal kit to share?
The member who helped me with my home made standards had procured a kit from Kirkby. Other's here have also purchased them. Have you tried the search?
still I would like to know if someone has any experience with Dr Kirkby's cal kits?