There is an “upgraded” NanoVNA for $5 more.
【Upgraded】AURSINC Vector Network Analyzer 50KHz -900MHz HF VHF UHF Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart https://www.amazon.com/dp/B07Z5VY7B6/ref=cm_sw_r_cp_api_i_1rO-DbR298AV4
I got this one in April which I think was listed as an official reseller on Amazon. I tried to track back to the original creators of this thing and buy from a recommend source which this was. I don't remember the long trail I followed to confirm but I did the work.
https://www.amazon.com/AURSINC-NanoVNA-H-Vector-Network-Analyzer/dp/B07Z5VY7B6/
https://www.amazon.com/gp/aw/d/B07Z5VY7B6?psc=1&ref=ppx_pop_mob_b_asin_image
This is the nano vna I purchased. It can do way more than you would need but is one of the cheapest best options I've found for testing antennas. I'm fairly new myself but this has been a game changer. Your ground plane antenna the legs should be angled downwards at 45ish degree angles. I'd say keep at it. I have a couple crazy looking antennas but they work. I'm listening to Airbender today on a crappy flat TV antenna from thrift store. Idk if you need to be spot on for receiving signals but I'm sure being close helps. Keep at it and enjoy. I would try a basic dipole myself and try to get it as high as possible and out in open air. I've noticed anything near my antennas will drastically change its swr.
Is this the NanoVNA I am looking for?
I'm happy with this one. It came with adapters and calibration tools. Whichever one you get, use NanoVNASaver.
