Welcome to the group, James! I agree with Mont on his cabling/connector suggestion. It's very common to use that USB->'stereo' plug cable combination for programming and control of ham radio transceiv

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Hmmm... if you use a USB connector on the QCX, you'll also have to add some circuitry to adapt/convert the USB signals to a serial port, like an FTDI chip (out of my realm here...) Wouldn't it be easi

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New member here. I'm building my first kit for a good friend of mine. It's a Rev 1 QCX 40 that I bought off of QRZ. This is the first radio kit I have ever built, so this is all new to me. I have expe

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Hi Group, I built three of ohwenzelph's AGC PCB's. I only need one. So, I have two I'd like to offer for sale. To USA only, $15 USD Paypal Friends and Family only. Please email with interest. See atta

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The best circuit I have seen for audio derived AGC was by Ulrich Rhode which was a revision of an idea by Wes Hayward.

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There are two bolt on solutions for the AGC issue .. both of the years old. Att is one of them - the TDA 7052AT is out of production and hard to get from the normal commercial supplier s but I can hav

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Sold - All units are on their way to a new home. 73 Alex Alex, DK4FT via groups.io <alexanderfritz71@...> schrieb am Sa., 8. Mai 2021, 17:54:

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By accident I bought 12 simple AGC Boards (Greggs, W7GRM - Rev 3 Version) and still have some ready build Boards available. Would provide them to QCX fans in Germany for 11 EUR, incl. logistics. (Germ

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Hi Trystan, I came on line this morning to do just that, mate, thanks for the thought :-) "Digital AGC for QCX"

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Interesting idea Julian. I'd like to follow this as well. Recently built a QCX+ and an AGC would be a nice addition. Howard VE3HBH

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Trystan, I reckon there are people having bets on the side, about how big the final count is going to be. The answer is now +1 hehehehehe 73s Greg VK8MD

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It would be great if you could start a new topic, like "DSP AGC" or something as this Simple AGC topic is already massive. :)

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This sounds like a very interesting project and I too would enjoy seeing it progress. A digital pot/push-button encoder set up requiring no front panel changes would great. Looking forward to more inf

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Will do, Arnie. thanks for your interest!

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Julian....Verry interested. Please keep me posted on your progress! 73 de Arnie W8DU

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Hi Jim, Thanks for the interest and the questions. Here's a heap of further discussion, as punishment for your trouble ;-) Yes, the overloading protection is a very significant benefit, I think: I can

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Julian, This is a very interesting idea. You said you would put your uP in place of the existing volume control so then the existing volume control could provide a DC input to the uP to set the output

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I've been kinda quiet recently, what with new job, schooling, and a few other issues, but I do peek into the list once in a while, and I noticed this thread with interest. Prior to seeing this thread

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Jim, My first Elmer was a CPO and I also have a Navy Knob on my first straight key which I have and still use. What great memories!! Thanks for sharing 73 James

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Jim, By serendipity, I discovered the same technique of placing the fones (cheap ones without seals that completely cover the ear) in front of the ears. Works great and minimizes the problem of lack o

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