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Category: Project Gerbers

ESP32 SI5351 VFO, Audio AGC and Filters

Well this is the last post for a while of my project files. LOL

 

Gerber Files HERE:

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Posted on June 15, 2020 by Rob PowellPosted in Project GerbersTagged gerber files, Ham radio, vk4hat5 Comments

Low Power Beacon

 

Gerber Files HERE:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerber, Ham radio, vk4hatLeave a comment

Bandpass Filters

 

Gerber Files HERE:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hatLeave a comment

Low Pass Filters

 

Gerber Files HERE

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, vk4hat. ham radio2 Comments

10w CW transmitter

The bias on the pre driver stages have been calculated for 300mv input. If using an Si5351 they will need to be toned down to keep linear.

 

Gerber Files HERE:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hatLeave a comment

Air Variable Cap Parts

Gerbers 1 HERE

Gerbers 2 HERE

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hat5 Comments

LCD Bezel

Gerber Files HERE:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hatLeave a comment

RF Sampler

 

Gerbers Here:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hatLeave a comment

WSPR AMP

Gerbers HERE:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hatLeave a comment

TX-RX Switch For SDR

 

Gerber Files Here:

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Posted on June 14, 2020 by Rob PowellPosted in Project GerbersTagged gerbers, Ham radio, vk4hatLeave a comment

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  1. Jack Margolis on Double Balanced Cross Coupled Product DetectorJune 15, 2022

    Rob, I'd like to try this circuit as the mixer for a direct conversion receiver. I also have some 12…

  2. loren on RF SamplerMay 30, 2022

    thanks a million I seen the schematic but with the dots on it wasnt sure of the resistor values thanks…

  3. Rob Powell on RF SamplerMay 28, 2022

    There is a schematic at the top of the page that has the part values on it. The 2 grounds…

  4. loren on RF SamplerMay 28, 2022

    just wondering since theres no parts list those are 6 x 65kK resistors or is it 6 x 1.65k resistors…

  5. Rob Powell on DDS VFO CW ExciterMay 25, 2022

    Its a common library found on the web. I think AD7C was the first to bring one out. Google him,…

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