Re: Calibration standards - pl-259?
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Calibration using SO-239 or PL-259 connectors is marginally useful at lower frequencies like the HF band because it is not an impedance controlled connector. The link below is the only commercial set I know of and they are UHF to SMA connectors with SMA loads attached which you can buy from Amazon much cheaper.
A review of these Array Solutions cal loads was done by someone in this group. /g/nanovna-users/topic/71375643#11047 You can make easily make better ones and there are several YouTube and web links that tell you how. Disclaimer: There are a couple of topics on this group that have discussed the disadvantages of using UHF (SO-239 and PL-259) connectors with the NanoVNA. /g/nanovna-users/topic/71097146#10935 /g/nanovna-users/topic/71523607#11501 Roger |
Roger Need