Re: Ferrite antenna for Airspy HF+ #experiment


prog
 

On Sat, Jul 20, 2019 at 07:16 PM, Alberto I2PHD wrote:
Should we expect similar results ?
No. The matching circuit is quite different between the two.
The Dual Port needs an external preamp with negative feedback to match the antenna.
Here's a comparison with the antenna alone (same firmware):


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