Re: What is CPK-3?
Adam, I have a houseful of AM/FM/SW receivers but I'd still like to build your kit. When will the next batch be available and what is the price? 73 Mike N2MS
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Mike N2MS
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#4621
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Re: What is CPK-3?
Shipped to all the beta testers but one who ordered after deadline. I will ship the one tomorrow. Thanks, Adam
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Adam Rong
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#4620
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Re: CPK-3 FM Hi-Fi
Guys, I just wrote a blog about the design concept. https://mp.weixin./s/0o1iK-K5-MkmMOsjAJKuOw Photo: BG5DLV for the first blue board KT receiver Thanks, Adam
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Adam Rong
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#4619
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Re: What is CPK-3?
I did a field test. Even with 30cm tiny whip antenna, MW stations can be heard, in low volume. SW is better. FM is great. I have decided to add the antenna in the kit. Great news for all worldwide
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Adam Rong
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#4618
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Re: What is CPK-3?
Thanks Adam ! Jim WB4ILP
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Jim WB4ILP
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#4617
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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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