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I bought the NanoVNA from elecdesign2015 on ebay and got the item
pretty
quickly, including battery and cables and short/open/load tests for
under
$60.

The battery was charged. I'm able to talk to the device using Larry
Rothman's serial command guidelines. The unit comes with 900MHz
firmware
installed.

So I'd recommend this vendor, at least for US purchasers.

On Thu, Jul 4, 2019 at 12:28 AM Dr. David Kirkby from Kirkby Microwave
Ltd <
drkirkby@...> wrote:

On Wed, 3 Jul 2019 at 20:06, Stuart Landau via Groups.Io <stuartl73=
[email protected]> wrote:

I looked at Aliexpress but saw no one offering a battery.

eBay item 254253727598 has a 400 mA hr battery. I ordered one on the

6th

June, but it was not dispatched until the 29th June, so you might

want to

consider that.

All of the descriptions seemed to be actually the same. Since there

seem to

be variations among those offered, it is a great help to know which

have

the lasted updates, before buying. I have a bunch of excellent 18

GHz SMA

male 50 ohm terminations. Each has been tested on a network

analyzer. The

return loss at 900 MHz will be 40 dB or greater. I can offer a very
reasonable price.
k6yaz@...
Stuart K6YAZLos Angeles, California USA

How EXACTLY are you determining that the return loss will be at least

40 dB

@ 900 MHz? What VNA and what calibration kit are you using? What is

the

uncertainty of your measurements? Does the load have a nut that

rotates

independently of the body?

Dave

-----Original Message-----
From: Larry Rothman <ac293@...>
To: nanovna-users <[email protected]>
Sent: Wed, Jul 3, 2019 7:17 am
Subject: Re: [nanovna-users] Nano Vna Pre-Order?

Banggood, Gearbest, Tomtop and a few others are like Aliexpress and

eBay

(buy it now mode) - they are an umbrella of many vendors that take

a % of

sales.
You shouldn't have a problem - I've bought through BG many times.
Unfortunately though, sometimes it can take a couple of months of

you

chose free shipping.
Other times, I've received my item in 2 weeks (China to Canada)

with paid

shipping.
BG offers shipping insurance - buy it for a little extra and pay

with

PayPal so you have 2 avenues you can pursue if you need to claim a

refund.

BG has warehouses in China, Europe and the US.

I had originally ordered the Gecko white unit without a battery but

I

just

ordered a black unit with battery and cables for $10 less on

Aliexpress.

Hopefully, it will take 3 weeks like the 1st one.

Cheers,
Larry





--

Dr. David Kirkby,