Hi Zack -
What I am trying to do is tune a magnetic loop antenna and have the nanoVNA actively track the single lowest
SWR across the range as I tune the loop antenna, that would continuously show me where the antenna is currently tuned as I adjust it towards the frequency I want.
Does the Search Left/Search Right function actively keep rescanning for lowest dips, or is a single scan manually executed each time?
John
toggle quoted message
Show quoted text
-----Original Message-----
From:
[email protected] [mailto:
[email protected]] On Behalf Of Zack Widup
Sent: Friday, June 19, 2020 8:31 AM
To:
[email protected]Subject: Re: [nanovna-users] Integration of a nanoVNA unit into an antenna system as indicator of resonance frequency
I'm not sure exactly what you want, but my NanoVNA H4 can find the minimum value for SWR or s11, whichever is selected. Choose "Marker" > "Search" > "Minimum" and then "Search Left" or "Search Right."
I did this with my 4 band (40-20-15-10 meters) vertical antenna. I chose
5.0 to 30.0 MHz as the range. I was impressed. The display matches what my RigExpert AA-600 displays. The routine I listed above would go right to the dips. I found that my antenna also has minor dips around 9 and 25 MHz.
73, Zack W9SZ
On Thu, Jun 18, 2020 at 8:37 PM John Dusek <johndusek3@...> wrote:
Following up on this thread 6 months later. Does anyone know if there
has been any firmware development performed on a function to track the
lowest SWR for the nanoVNA?
John - W3JED
<>
Virus-free.
www.avast.com
<>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
