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Hello all,?

I ordered a NanoVNA but amazon sent me a SAUltra on accident (which I planned on ordering too anyways)

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But it fails the self test and the calibration too. I fed in the 30MHz cal signal and it reads way low. My old SA reads the cal signal fine. When I connect an antenna, the FM broadcast band is faint to say the least. Any tips?

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Return to amazon

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Designer of the tinySA
For more info go to

They don't want it back so I'd like to fix it if possible

If still in warranty, they must accept returns

They're sending me the VNA I ordered and they don't want this back. So it's not really a warranty situation.?

I don't see how it can be a clone, as it came 2 day shipping from amazon which the tinysa site lists as a good seller. Don't the fakes also have firmware that falsely shows the self-test as passing anyways??

Dave

----- Original Message -----

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To:

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Sent:

Sat, 22 Feb 2025 00:01:14 -0800

Subject:

Re: [tinysa] Ultra failing tests

They're sending me the VNA I ordered and they don't want this back. So it's not really a warranty situation.?

I don't see how it can be a clone, as it came 2 day shipping from amazon which the tinysa site lists as a good seller. Don't the fakes also have firmware that falsely shows the self-test as passing anyways??

It looks like the RF switch on the RF port is damaged and Amazon may have sent you a return from another user. Suggest returning it for a replacement.

If they don't want it back you can try to replace the switch

--

Designer of the tinySA
For more info go to