开云体育

Reginald,

for the sake of accuracy, Erik designed the tinySA, inspired by the nanoVNA. The nanoVNA itself was originally designed by eddy555, a Japanese Radio Amateur, whose design was then adopted & adapted by Hugen, a Chinese Radio Amateur, to become the pre-built nanoVNA which is available today. And that design itself has spawned both a wide degree of ownership and the inspiration for further low-cost VNA designs.

Erik did use the nanoVNA-H4 hardware as the basis for his tinyPFA.

The hardware of both the nanoVNA (-H and -H4) and the tinySA make extensive use of SA612 mixers, SA5351A-B-GT frequency synthesizers, STM32F3xxxx microprocessors, USB powering & communication, a Lithium cell, and ChibiOS for the firmware, plus other bits & pieces. That is a very powerful mixture that can readily be re-purposed, as Erik has demonstrated. [And other ?processors and OSes are both available and very useful, of course.]

73, Stay Safe,

Robin, G8DQX

PS: Much more at , plus where the links lead.

I'm quite aware of the history of the nanoVNA, edy555, Hugen's part and Erik's part. The clone problem is very acute because of the low cost, high performance and popularity. I focused on Erik because he posts a list of authorized sellers. I bought all of mine from R&L
electronics as I am in the USA.

Have Fun!
Reg