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Hamradio and electronics discussions for visitors to Harry's Homebrew Homepage www.sm0vpo.com - Commercial use of information published here require permission of the author. Private use is free. Citations used externally must include a link to the source


300KHz - 225MHz Universal FM PLL

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300KHz - 225MHz Universal FM PLL Empty Re: 300KHz - 225MHz Universal FM PLL

Post by dare4444 Mon Feb 28, 2022 12:06 am

Correction: Highest Frequency is 199.9MHz and not 225MHz.

This is the updated final schematic.
Use this one.

300KHz - 225MHz Universal FM PLL Img_2181

dare4444

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Post by dare4444 Sat Feb 26, 2022 3:27 am

Admin wrote:Hi Joy,
I will look at this. Seems very interesting.

BR Harry - SM0VPO

Hello Harry,

Thank you for the encouragement as always!
Here's the 200mW RF section. I forgot to add a LPF.
MV 209 1-11 V covered 4 to 33 pF approx and covered 87.5 to 108MHz

300KHz - 225MHz Universal FM PLL Img_2179


Last edited by dare4444 on Sun Mar 20, 2022 11:29 pm; edited 2 times in total

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Post by admin Sat Feb 26, 2022 12:36 am

Hi Joy,
I will look at this. Seems very interesting.

BR Harry - SM0VPO

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Post by dare4444 Tue Feb 22, 2022 1:47 am

Hello Harry,
If you like this circuit then my request is to put it on your website. Inspired by your CMOS Synthesizer.

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Post by dare4444 Mon Feb 14, 2022 2:08 am

Harry, please put this on your website. 
It works great. Inspired by you and your PLL circuits, I published this in 2015. 300KHz - 225MHz Universal FM PLL Img_2166

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