CPK-1 2023 output power

Patrick All Messages By This Member #5178 Hello everyone! ? Just finished my first Pixie built. I checked the output with my tinySA ultra. The Pixie produces an output power of 22dBm (about 15mW) and is stable at a frequency of 7.03MHz with my chosen crystal. I used a 9V block battery fully charged while measuring. I think this is a little bit too low. In Adam Rongs built video on YT he got an output of 29dBm (so about 800mW). Any suggestions? ? Thanks for your replies ? 73 de OE8ZZZ - Patrick
Adam Rong All Messages By This Member #5179 Hi Patrick, I have replied your comments to my video. Your result is very normal.?My tinySA shows -19.7dBm because I have attached a -40dBc attenuator. To increase the output, you can consider replacing the final transistor to 2N3886 or similar, or simply increase the voltage of the power supply to 12V. Thanks, Adam toggle quoted message Show quoted text On Sun, Apr 27, 2025 at 8:43?PM Patrick via <pkummer83=[email protected]> wrote: Hello everyone! ? Just finished my first Pixie built. I checked the output with my tinySA ultra. The Pixie produces an output power of 22dBm (about 15mW) and is stable at a frequency of 7.03MHz with my chosen crystal. I used a 9V block battery fully charged while measuring. I think this is a little bit too low. In Adam Rongs built video on YT he got an output of 29dBm (so about 800mW). Any suggestions? ? Thanks for your replies ? 73 de OE8ZZZ - Patrick -- Thanks, Adam Rong
Patrick All Messages By This Member #5180 Thank you for your reply. I did use two 20dB attenuators while doing the measurements. Ok, I will try to change the transistor and power the Pixie with 12V.? Meanwhile I was looking for informations to convert the Pixie to the 20m band. I found a blog but there is a different Pixie model in use. Do you have any suggestions?
Adam Rong All Messages By This Member #5181 Patrick, See this post for 20m mod. /g/crkits/message/4844 toggle quoted message Show quoted text On Sun, Apr 27, 2025 at 10:00?PM Patrick via <pkummer83=[email protected]> wrote: Thank you for your reply. I did use two 20dB attenuators while doing the measurements. Ok, I will try to change the transistor and power the Pixie with 12V.? Meanwhile I was looking for informations to convert the Pixie to the 20m band. I found a blog but there is a different Pixie model in use. Do you have any suggestions? -- Thanks, Adam Rong
Patrick All Messages By This Member #5183 Thank you very much! I appreciate

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CPK-1 2023 output power