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  • smirnoff46 commented on netzener's instructable Three Transistor Short Wave Radio5 months ago
    Three Transistor Short Wave Radio

    Just one more question. Is there something on Uxcell that would work for the 0.047uf multilayer capacitor? I can find .047uf and I can find MLCC's, but not in the same product at once. I've already placed my order with mouser and I'm trying to keep shipping to a minimum. Unless Mouser has a 140pf Variable capacitor that I could use, I will have to place another order with mouser and one with Uxcell. Thanks again-Matt

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  • smirnoff46 commented on netzener's instructable Three Transistor Short Wave Radio6 months ago
    Three Transistor Short Wave Radio

    Thanks again for the info. Sorry to keep bugging you, but I now have everything sitting in the cart on Mouser except for the 140pF Variable Capacitor. I'm not clear on if I need to find something labeled exactly 140pF (which Mouser doesn't have) or if I can get anything that has 140 in the range? For example: 10pF to 150pF, or 12pF to 180pF. Once I get that out of the way I'll be ordering and starting the build as soon as everything is shipped. Thanks so much for all your help!-Matt

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  • smirnoff46 commented on netzener's instructable Three Transistor Short Wave Radio6 months ago
    Three Transistor Short Wave Radio

    Thanks for the reply and advice. I'm currently collecting the parts list from Mouser. It's been a bit of work narrowing each part down to the right specs from the thousands of results you get from each part search, but I'm fairly confident in my choices up until the Mylar Capacitor. They seem to be calling it by a different name. Will this one work?: http://www.mouser.com/ProductDetail/Nichicon/QYX1H...Also, I'm assuming the voltage rating on the capacitors and resistors is not so critical. Am I correct in that assumption? I'm finding parts ranging from 1kV to 500V. I'm trying to stay at the smaller end, and away from AC ratings. Is that good enough? Thank you again sir.-Matt

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  • smirnoff46 commented on netzener's instructable Three Transistor Short Wave Radio6 months ago
    Three Transistor Short Wave Radio

    Nice project. I remember getting a Radio Shack kit when I was young and found myself years later wishing I knew what happened to it. I'm pretty sure I was picking up air traffic control communications at the time. I recently tried to make a shortwave/VHF radio following instructions from a Youtube video, but I haven't been able to get it to work. Not sure what I did wrong but the instructions were not very clear. I would love to try your design, but can you tell me if it would work with powered speakers instead of the crystal headset, or would that feed back power into the circuit? How could I prevent that? I like the idea in the other design of using a 9v battery in order to be able to use regular headphones or plug into a computer to make recordings. Thanks for any suggestions!-Matt

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