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Haven’t bought one yet but I’d like to make sure I get a version capable of the TDR addition. I’ll have to figure out how to add it if necessary after receiving it.
Thanks.

I know the NanoVNA H4 has a TDR function because I've used it. It isn't
called that in the menu and is a little tricky to figure out. There is a
Youtube'video that describes its setup. Also message 12494 in this group.

Zack W9SZ

On Wed, Mar 19, 2025 at 3:18?AM James Henscheid via groups.io
<jim.henscheid@...> wrote:

Haven’t bought one yet but I’d like to make sure I get a version capable
of the TDR addition. I’ll have to figure out how to add it if necessary
after receiving it.
Thanks.

The NanoVNA-F-V2 has a convenient TDR function: It has its own menu choice. Just requires settings dependent on cable speed factor and short/long cable. Quite intuitive. Firmware 0.5.4 handles everything correctly. Nice, big display. I like mine.
Raymond

On Wed, Mar 19, 2025 at 09:17 AM, James Henscheid wrote:

Haven’t bought one yet but I’d like to make sure I get a version capable
of the TDR addition. I’ll have to figure out how to add it if necessary
after receiving it.
Thanks.

Hi James , the nanovna H H4 and LiteVNA64 , whith the recent FW
has the TDR function but named TRANSFORM .
You can reach the relative menu , tapping the DISPLAY >> TRANSFORM >> TRANSFORM ON.
In the pictures , the 270mm cable connected to CH0 .
Regards Maurizio IZ1MDJ