[hpsdr] a VNA reflection bridge from China

[k3it]

I just got this very inexpensive VSWR bridge from Aliexpress:
http://www.aliexpress.com/item/Free-Shipping-RF-reflection-bridge-directional-antenna-VSWR-bridge-3MHz-1200MHz-transmiiter/600500893.html
It took about five weeks from the order date.

the bridge appears to be working OK with the Hermes VNA software.  If you
are  interested what it looks like on the inside I took a picture below.
Also there is a couple of screenshots of the VNA software and the same
antenna measured with a standalone analyzer SARK-110.

http://goo.gl/JRZ7cj

(tnx R6YY for the the aliexpress link)
73
Vasiliy
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