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I'm also on. Hearing nothing in NJ -- John - WA2FZW

I'm on the air, but there's a lot of traffic from the Illinois QSO party at the moment...

There are clearly a few items of ebay electronics about which some fear, uncertainty and doubt is in order. For example, good luck getting 20 AH at 12v out of this: ?

Hi Dale, I'm hopeful that maybe you got a poorly done batch of clone boards. I'll do some more testing. Thanks for your feedback! 73, David KB4FXC

Hi Arv, Thanks for the comments. The Nano's I've got have a (clone, I'm sure) AM1117-5.0 regulator. I noticed the datasheet says the ABS MAX input voltage is 15VDC, a stark contrast to 26+ VDC MAX for

Nope they didn't survive because the failure of the regulator meant that, when they blew, they went short circuit and slammed full 12V onto the Atmega. The ones that I have had fail were all fitted

David KB4FXC Regardless of what has been said about the on-board regulator being questionable, it is a pretty standard 3-terminal regulator it is usually good for at least 100 ma. I have used a couple

On the raduino, the si5351 is sucking as much as 35ma+5.6ma=40.6ma of 3.3v from the Nano assembly as per table 3 on p5 of ?https://www.silabs.com/documents/public/data-sheets/Si5351-B.pdf That 3.3v

Hi Dale, I'm designing a NANO project right now that uses the on-board regulator at about +12v input. I'm only powering the atmega328p chip and? 6 digital outputs, consisting of low-current

Dale me ol' Chin-wah, commiserations - though if the rest of the chip survives you'll have a ready stock? of Nanos to hand! That flaky reg is the reason for the Raduino's 78LM7805 regulator - that

When you come right down to it, radio is math and physics…and not much else.

Theres a couple guys over there who know a little bit about radio too (pun intended). Steve kb1chu

Hi Farhan, Forgive me if I do not understand- you're speaking just about bandpass filters, correct? Or are you suggesting doing this for both the band pass and the low pass filters?? -- Ryan Flowers

Thanks for sharing these anecdotes. There are many people in North America who do not know about the contribution of South Asian physicists and mathematicians to our understanding of the universe, and

We all stand on the shoulders of giants. So many of our greatest scientists and artists are obscure until after their passing. A friend, Bill W6FA was a prof @ CalTech when Nobel winner Richard

Has anyone tried changing C115 and C122 from 1uF to 100nF??? (C115 for receive pop, C122 for carrier issue?)

Certainly forget the Chinese Nano clones working much above 9V despite many sellers saying they're good for 12V and even 15V. I had several release the magic smoke when running them on 12V as the

Jack, I have the 1.08 version of your code and everything is working great, except the connections for the real time clock module have me stumped. I see the reference to pin 53 in the code, but it

Very cool, Allard! We all much appreciate the time you are putting into this. I hope some are contributing a few bucks to the charity you show on your github page. I'm not convinced that just

You're probably right.? But I would not count on a $2 Nano clone dealing with 12v at vin. Depends on what regulator these clones have. Some cheaper regulators may not be good beyond 5v. And at 12v it