Re: A few ideas from K.P.S. Kang's blog of 2017

Jerry Gaffke
 

Perhaps we'd get 3.5 to 30mhz operation by replacing Kang's 47+4.7pF capacitors 
with a 1000pf cap and a 470 ohm resistor in series?
Anybody see a problem with that?
Also, not obvious to me why he bothered to put 4.7pF in parallel with the 47pF cap. 
 


On Tue, Aug 6, 2019 at 10:50 AM, Jerry Gaffke wrote:
On the uBitx we want this to work from 3.5 to 30mhz.
Perhaps could do this by mechanically switching in different values of capacitance to replace that 47+4.7pF
depending on the operating frequency.  Or go with one of the 1n4007 PIN diode T/R switch designs.

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