[time-nuts] Re: WWVB receiver schematic inquiry

[paul swed]

Max
It depends on what your interest is. If you want to decode the AM signal
then you can simply use a TRF receiver. The challenge these days are
getting inductors for the tank circuits. As a result newer designs use op
amp bandpass filters. Technology being what it is there are single chip
units for very little cost. Add the loop and a 60 KHz crystal and it works
at very low power consumption. The C-MAX chip is an example if they can be
obtained these days.
However if you want to decode the PSK signal thats a much more complicated
design. Search for KD2BD and that should get the QEX article. I have built
it and it does indeed work.
Depending on your location and distance from wwvb will establish how well
the receiver will work over 24 hours.
Near Boston I use a 10' X 10' square loop with several hundred feet of wire
and preamp.
Good luck.
Paul
WB8TSL

On Mon, Feb 27, 2023 at 5:24 PM Maxaner Radcliff via time-nuts <
time-nuts at lists.febo.com> wrote:

> Hello,
> I am trying to make a WWVB radio clock and I'm currently working on the
> antenna/receiver portion. I have done a fair bit of research and have found
> a few schematics but was wondering if anyone here has any designs that
> worked for them. I plan on using a ferrite loopstick antenna and would be
> grateful if someone could redirect me to some good resources/designs. I am
> aware there are prebuilt receivers sold, but I would like to build it
> myself.
> Thanks,
> -Max
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