[time-nuts] WWVB PM Receiver

[David McGaw]

   It's not a commercial unit.  As it says at
   [1]http://www.maxmcarter.com/rubidium/index.php, " Almost 30 years ago,
   I built a receiver for WWVB roughly based on a Don Lancaster design."
   Apparently this refers to an old article, " Don Lancaster,
   Experimenting with WWVB, Radio Electronics, August/September 1973".
   David

   On 9/26/12 10:11 AM, paul swed wrote:

     Thats what I was reading. But have to say I have never seen a
     commercial divider chain that could be changed. The spectracoms
     divide to 20 Khz and mult by 3. So would like to see that circuit.

   Regards

   Paul
   On Wed, Sep 26, 2012 at 10:00 AM, David McGaw
   <[2]n1hac at alum.dartmouth.org> wrote:

     As I read it, the feedback divider was reprogrammed.
     David

   On 9/26/12 9:49 AM, paul swed wrote:

     Also curious on the rcvrs doubling to 120 KHz another multiplier or
     did the
     rcvr happen to have a way to change that frequency? The note says
     that the
     rcvr local carrier doubled.
     Regards
     Paul
     On Wed, Sep 26, 2012 at 9:18 AM, J. Forster <[3]jfor at quikus.com>
     wrote:

     Have you actually tried it and gotten it working, except possibly in
     a
     very strong signal area?
     -John
     ================

     Hi,
     From: "Bob Camp" <[4]lists at rtty.us>

     A tuned antenna probably is going to provide all the selectivity
     you'd
     need.

     Another possibility is to modify your old circuit like that:
     [5]http://www.maxmcarter.com/rubidium/2012_mod/index.html
     Bye,
     Jean-Louis
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References

   1. http://www.maxmcarter.com/rubidium/index.php
   2. mailto:n1hac at alum.dartmouth.org
   3. mailto:jfor at quikus.com
   4. mailto:lists at rtty.us
   5. http://www.maxmcarter.com/rubidium/2012_mod/index.html
   6. mailto:time-nuts at febo.com
   7. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
   8. mailto:time-nuts at febo.com
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  10. mailto:time-nuts at febo.com
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