8 thoughts on “About”

  1. Hi Jason:

    Hopefully your design is on schedule.

    Long story, but the bottom line is people are now picky about who links to their site as it can affect their Google Search status. I've had people ask me to not link them -- crazy , my site enjoys a top 5 , page 1 Google ranking for the search word "QRP", but who am I to argue?

    I'm now only linking websites by permission. Is it okay if I link your site
    from mine?

    Thanks and 73
    Todd

    Thanks

  2. Dear Jason,
    Fine to see that you are still active. I dropped you an email recently but unfortunately did not get a reply.

    Is there a chance to get into contact on how to deal with the contents of the qrpedia site I had contributed to?
    As I read it is off line at the moment.
    All the best regards, 73, Dieter DL2BQD

  3. Jason,

    I came across your blog while searching for info on direct conversion receivers. It's interesting reading. I've been unable to find a path to a list of all you entries other than the left and right "arrows" at the bottom of each blog post. Is there a page with all the links on one page?

    Thank you,

    Ed

  4. Jason

    Thank you for your work on the Si5351. I hope to follow you.

    The jitter on the Si5351 is 10X that of the Si570. I hope you have
    an Si570 vfo. The K5BCQ kit is a good economical way to get one.

    It would be helpful to measure the noise in your receiver running
    first with the Si5351 then with the Si570. Is there a big difference
    in the noise?

    Fantastic work.

    thanks
    tom
    .
    k1trb
    trberger@colby.edu

  5. Thanks Tom,

    I looked at your claims about the jitter and from what I can see the difference isn't quite that stark. The datasheets claim RMS jitter of 0.65 for the Si570 and 3.5 for the Si5351, so about 5x difference.

    However, I haven't seen any measurements of phase noise, which is probably a bit more revealing our our use case. I do have a Si5351A Breakout Board out to KF5OBS so he can do a phase noise measurement, which should be very interesting.

    Just from a qualitative perspective, the Si5351 probably won't be the choice for a high-performance rig (the Si570 sounds great for that with such a low jitter), but I think it will be perfectly fine for a casual-use or portable type rig. I can't hear an excessive amount of noise in my receiver, and there is a very noticeable difference between having the antenna disconnected and connected.

    I'm fairly confident that the Si5351 will be useful in quite a few radio applications.

  6. Hello,

    I can't find any contact info in the site so forgive me for using the comment section. I'm Algen, I work with engineering website EEWeb.com and would love to do an exchange of website links (with your website: http://nt7s.com/) and feature you as a site of the day on EEWeb (you can see an example here http://www.eeweb.com/websites/multirotor-usa). Is this of interest to you?

    Hope to hear from you soon.

    Sincerely,

    Algen Dela Cruz
    EEweb.com

  7. Hello Algen,

    That sounds interesting! Please contact me at milldrum at gmail dot com with the details.

    Thanks,
    Jason

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