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VNA Stuff

Ernie Rader
 

Gentlemen (and ladies too, of course).

I¡¯ve had my NanoVNA since they first came out; I think a year or two. For several reasons I haven¡¯t taken it out, nor even calibrated it yet. Now I have the time.

Upon opening the plastic box it came in, I notice that I¡¯m missing one of the calibrating SMA threaded resistors. Does anyone know where I could purchase another set?

Second, I¡¯ve tried multiple charging cables; the ones with USB ¡°C¡± connectors, and none of them will pass current into the unit¡¯s battery. My friend has the ¡°sister¡± unit to what I have, and his USB cable works just fine. Are there differences in those cables, or do I have two that are bad? Where could I purchase another and be certain I¡¯m getting one that works?

Any and all help in this regard would be most appreciated.

Ernie
Wes KN4NPH
 

Ernie,
There are many to choose from on FleaBay; search, '*nanovna vector
network analyzer calibration kit*'.

Yeah, some C USB cables are *data only*. Again, FleaBay can be your friend
(or your worst nightmare;
it's all about perspective). Try this one:


Take care,

Wes KN4NPH

On Sun, Oct 10, 2021 at 2:59 PM Ernie Rader <ernie@...> wrote:

Gentlemen (and ladies too, of course).

I¡¯ve had my NanoVNA since they first came out; I think a year or two. For
several reasons I haven¡¯t taken it out, nor even calibrated it yet. Now I
have the time.

Upon opening the plastic box it came in, I notice that I¡¯m missing one of
the calibrating SMA threaded resistors. Does anyone know where I could
purchase another set?

Second, I¡¯ve tried multiple charging cables; the ones with USB ¡°C¡±
connectors, and none of them will pass current into the unit¡¯s battery. My
friend has the ¡°sister¡± unit to what I have, and his USB cable works just
fine. Are there differences in those cables, or do I have two that are
bad? Where could I purchase another and be certain I¡¯m getting one that
works?

Any and all help in this regard would be most appreciated.

Ernie
Ernie Rader
 

Wes!!

Thank you so much!! You¡¯re a real life saver. I really do appreciate the time you took to respond. Nothing like having a quality group of guys helping each other.

73,
Ernie, W5NH

On Oct 10, 2021, at 2:10 PM, Wes KN4NPH <kn4nph@...> wrote:

Ernie,
There are many to choose from on FleaBay; search, '*nanovna vector
network analyzer calibration kit*'.

Yeah, some C USB cables are *data only*. Again, FleaBay can be your friend
(or your worst nightmare;
it's all about perspective). Try this one:


Take care,

Wes KN4NPH

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