Thank you for your reply and the links that you supplied, as well as your kind offer of help. I may well take you up on that offer in the near future.
The book, Arduino for Ham Radio is on my Amazon Wish List. I'm waiting for a used copy to show up that is cheaper than the new price. And I have already ordered a used copy of Arduino Projects for Amateur Radio and am waiting on it for delivery. That book also has a step-by-step guide to building a CW decoder.
I'm going to download the source code from the link that you provided and have a look at it. Again, I really appreciate your help and good luck with your own build. I'd be really interested in hearing from you how that goes. Cheers. KG7LUO
I just joined the Yahoo!group today. I'll look through it.
I was going to make some Arduino stuff for it. The project in Arduino Projects for Amateur Radio sounds good, but I thought I might try m0xpd's Si5351 version since the breakouts come via Adafruit, and I'd rather support them, especially since LadyAda is a fellow ham.
I didn't know it wasn't set up for the whole band. What is its range? Although, once I bother with the DDS, that shouldn't matter. Right?
It should be here this or next week. US Customs and the USPS are starting to feel the seasonal increase.