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Author Topic: KX2 + USB sound adaptor + Raspberry Pi?  (Read 10630 times)
KJ6DRG
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Posts: 81




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« on: October 17, 2017, 08:51:21 AM »

Hi all,
I posted this over in the digital forum yesterday but didn't get any helpful responses so I thought I would give it a shot over here!

I am thinking about assembling a small (possibly for utilization with Summits on the Air) digital station with my KX2, a Raspberry Pi model 3 running Debian and fldigi, and one of these USB sound adapters: https://www.amazon.com/gp/product/B00IRVQ0F8

My question: what would I need for connecting the USB adapter to the KX2? Can I just use regular stereo audio cables with 1/8" plugs or do I need some sort of special cable? Are there any other components or cables that I am missing that might come in handy for a digital station? Never done digital before!

I have the radio and the computer already.

Thank you!

Michael N6MST
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N3QE
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Posts: 4943




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« Reply #1 on: October 17, 2017, 11:31:01 AM »

I think it's preferred if you use a USB sound card with "line in" instead of "mic in" levels. That way you don't need to attenuate the higher level coming from the rig.

Yes, regular 1/8" stereo cables especially if you are using "line in". If you only have "mic in" you may need an attenuator.

I might recommend an Intel NUC if your software needs a little more compute power than the Raspberry Pi can provide.

Almost all small form factor (Raspberry Pi, NUC, Laptops) solutions are a PITA because they do not natively have a line in jack for audio.

Mini-ITX stuff will usually have a real line in jack but may be a little bigger than you'd like.
« Last Edit: October 17, 2017, 11:36:18 AM by N3QE » Logged
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