[TowerTalk] Measuring resonance of a yagi element

[Richard (Rick) Karlquist]

On 4/21/2020 8:48 PM, David Gilbert wrote:
> 
> calibration units.  There are lots of inferior copies, though, so do a 
> bit of research to find out which ones are the real deal.  They can be 
> found on both eBay and Amazon.
> 
> Dave   AB7E
> 

So how are we supposed to determine the "genuine" ones?

Rick N6RK