Re: AGC circuit to try?
Any an attenuator used up front at the uBitx antenna porttoggle quoted messageShow quoted text
will be dealing with a whole world's worth of RF,
so any non-linearity in the attenuator could create IMD products
due to a strong local AM or FM or TV or hairdryer signal.
The situation gets slightly better after the 30mhz low pass filter at L1,2,3,4
Much better after the 45mhz crystal filter.
Much much better after the 12mhz filter.
Though as Tim has pointed out, the 12mhz filter might
be especially sensitive to variations in impedance.
Pick your poison.
On Tue, Apr 10, 2018 at 10:36 am, Jerry Gaffke wrote:
The half-life of the charge carriers in a PIN diode is only around a microsecond,