Re: VNA Cal Kit

Roger Ray

I agree with most of the comments. All you really need is good 50 ohm load, and a short that is a good short. The main thing is to know that load is good, and a check that it has not changed. The important bit is to put it in a box. Dosn't have to be a fancy wooden box, just so long as you keep it separate. Mainly to stop yourself using it for that quick check on that 5W TX!
I can't quite see the built a load with resistors, when you can pick up a good sma or N load for a couple of quid on ebay or a radio rally

Some good response from a 'blank' posting. Must do that again ..not.

--- In ukmicrowaves@..., Geoff Blake <geoff@...> wrote:

On 17 March 2011 00:43, Christopher Bartram <cbartram@...> wrote:


My homemade 'standards' are more than good enough to evaluate my work
to 6GHz using my 8753 net. an., and I've never had a conflict with a
For my own use I've used the same 'standards' to calibrate my wonderful old
clunker 8410 VNA system and used it very successfully, albeit with quite a
of manual calculation to about 15GHz.

There's a lot of b******s talked about VNA cal. kits. Unless you actually
_need_ National Standards traceable equipment, which by definition for
radio, you don't, make your own! If there is sufficient interest, I'll
something up for Scatterpoint.

Vy 73


Hi Chris, I for one would be very interested in your thoughts and practice.
Personally, I love a 50 Ohm sliding load, only because I have one :-)

Geoff G8GNZ


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