¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

nanoVNA as TDR on coiled heliax?


 

Hello all,

I don't have much experience using TDR's in general and am wondering if they can accurately measure cable length if the cable is coiled rather than deployed in a more typical manner? At my work QTH we have a length of heliax on a big wooden spool and no one knows how much of it there is, nor can we easily count the number of coils on this stuff. It is quite rigid and we'd like to not have to unroll it.

Thanks/73,
--
John AE5X

Join [email protected] to automatically receive all group messages.