Nagoya NA-771 Tests

I tested today one nagoya NA-771 antenna i have.
A search on the net revealed that the antenna has poor performance on UHF
I used my Anritsu site master antenna analyzer to test the antenna for VSWR at some bands.
Here is a sweep from 100MHz up to 500MHz:

Here is a VHF sweep:

And a UHF one:

Clearly the antenna has very high SWR on the UHF band.