Re: What is CPK-3?
The whip antenna looks like this. The tuning LED can be lit in my QTH. Thanks, Adam
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Adam Rong
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#4616
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Re: What is CPK-3?
Guys, The blue PCB just arrived. I just shipped the first batch to domestic customers earlier today. Beta testers worldwide, your kits will be shipped Monday. For those who ordered 2 or more kits, you
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Adam Rong
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#4615
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Re: CPK-3 FM Hi-Fi
Adam, Thanks. Can it demodulate SSB stations? This does not appear on the spec sheet. Mike N2MS
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Mike N2MS
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#4614
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Re: CPK-3 FM Hi-Fi
Hi Mike, It is a modern radio chip. It can pick up several stations here even with a whip antenna of 30cm. Thanks, Adam
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Adam Rong
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#4613
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Re: CPK-3 FM Hi-Fi
Adam, How doe it sound om shortwave? Can you pick up any stations? Mike N2MS
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Mike N2MS
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#4612
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Re: CPK-3 FM Hi-Fi
You can upgrade by yourself. Definitely it will be helpful for easier tuning.
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Adam Rong
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#4611
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Re: What is CPK-3?
Thanks guys. Now we have enough beta testers. Please hold the horse and wait for my formal announcement. It won't be long. Thanks, Adam
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Adam Rong
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#4610
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Re: What is CPK-3?
Hi Adam, this looks like a lot of fun, just ordered one now. Nick VA7ILO
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Nick Cookson
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#4609
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Re: CPK-3 FM Hi-Fi
Great project Adam! For an easier tuning, I would use a multi-turn potentiometer. Of course, this involves other costs. ?n mie., 29 nov. 2023 la 05:19, Adam Rong <rongxh@...> a scris:
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Costin R
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#4608
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Re: CPK-3 FM Hi-Fi
Jim, See this chart I put together. Overload happens for strong stations. If you are really serious, add SMA attenuator of -20dB. Thanks, Adam
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Adam Rong
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#4607
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Re: CPK-3 FM Hi-Fi
Hi Adam, What is the total frequency range covered? Is it one continuous band or is band switching required? Is mode switching required? Can the receiver handle direct input from a full size antenna
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Jim WB4ILP
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#4606
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Re: CPK-3 FM Hi-Fi
Larry, It is great idea to use it for kids. You will need to solder SOP16. The manual will be available when you receive them. Thanks, Adam
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Adam Rong
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#4605
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Re: CPK-3 FM Hi-Fi
Adam, have you written any assembly manual for this yet? I just placed an order for three. I plan on giving two away to my grandkids. I am looking forward to building them.
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Larry Lovell
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#4604
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Re: What is CPK-3?
Now I have 15 and 9 from domestic. The next batch for beta is total 30. Thanks, Adam
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Adam Rong
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#4603
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Re: CPK-3 FM Hi-Fi
A short wave ham radio antenna will be good to cover FM, MW and SW bands. The design concept is to treat band switch as coarse tuning. You really don¡¯t have to care about the frequency or band, you
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Adam Rong
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#4602
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Re: CPK-3 FM Hi-Fi
Hi Adam, Sounds great ! What frequencies are covered and what were you using for the antenna? Thanks for the video. Jim WB4ILP
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Jim WB4ILP
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#4601
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CPK-3 FM Hi-Fi
Guys, Check out this video. The prototype works great with my monitor speaker. https://youtu.be/FsCgMBHCJyY?si=0BdyaeRXM6deTg4n Thanks, Adam
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Adam Rong
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#4600
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Re: What is CPK-3?
Thanks. Now it reached 12 kits. Thanks, Adam
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Adam Rong
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#4599
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Re: What is CPK-3?
Hi Adam, I just sent PayPal for 3 kits. Thanks ! Jim WB4ILP
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Jim WB4ILP
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#4598
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Re: What is CPK-3?
Now I have order of 8 kits and all of the ship to addresses. Thanks guys.
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Adam Rong
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#4597
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