On 04/12/2019 14:22, matyslubin@... wrote:
Barry, looks like you are from UK.
I'm planning to buy one of NanoVNAs. Where did you buy your device, eBay ? Which firmware did you use for it?
I will be using my NanoVNA for the same purpose as you, to calibrate my antenna at 1090 MHz. So, ideally will be nice to have 1500MHz range. Thanks in advance for support.
My unit came from an eBay supplier in Basildon Essex, however the listing is no longer there.
I would suggest the nanovna-h which comes with case and all accessories including a USB-C to USB-C lead for use with phones that have USB-C.
This version includes resistors to allow the use of this cable.
Search ebay for nanovna-h and look for the supplier in Basildon.
I think it will come with the 1500MHz firmware (a friend of mine bought one recently and it did). If not it is simple to upgrade it.
For best results be sure to calibrate it over a fairly small range, say 1050 to 1150MHz before using it at 1090, or the 101 calibration points will be too widely spaced.
Nanovna-saver:
Save the calibration to a memory and also to memory 0 before using nanovna-saver.
You can then re-calibrate in the software over maybe 1000 points within the span of use, to get even higher resolution.
Have fun, hope it works out.
Barry
