From: noreply@ademu.nl   
      
   On 2026-01-24 17:15, john larkin wrote:   
      
   > I think sine waves are boring - they just go around in circles - but   
   > we may be doing some RF switch modules and I guess people will expect   
   > some sort of S-parameter things. Or at least a spec of some Sxx at   
   > some max frequency, which will be 3 GHz in our case.   
   >   
   > I guess we can buy a cheap Amazon VNA and measure a couple of points.   
   > We could check its calibration with a couple of hanks of hardline or   
   > something.   
   >   
   > Sounds like an intern project.   
   >   
   > Can anyone suggest a suitable small inexpensive VNA? We might use it   
   > 10 times in its lifetime.   
   >   
   > The generic Amazons are about $150 for 3 GHz and twice that for 6.   
   >   
   >   
   >   
   >   
   >   
   > John Larkin   
   > Highland Tech Glen Canyon Design Center   
   > Lunatic Fringe Electronics   
      
   The best one I know of is the NanoVNA   
       NanoVNA | Very tiny handheld Vector Network Analyzer    
   Discussion group and more info at   
       nanovna-users@groups.io | Wiki   
      
     Beware to buy a real one:    Buy a   
   NanoVNA | NanoVNA   
      
   For USA that is at R&L Electronics. Lots of bad clones on Amazon and   
   Aliexpress.   
      
   Arie   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)