[time-nuts] WWVB PM Time Questions

[rcbuck at atcelectronics.com]

Paul,

Yes, I built the d-psk-r per the schematic. However, I think I did not
understand how it actually worked. I was expecting it to be able to
duplicate the WWVB sine wave signal with the phase reversal present when
the PM data bit changed from a 0 to 1 or 1 to 0. I have a 60 kHz sine
wave going into pin 8 of the mixer transformer. I expected to see a sine
wave out of pin 1.

However, I looked at the code again and it appears the "LO" port of the
mixer is only driven one per second. There is no steady drive to the
"LO" port so there cannot be a sine wave out of the "IF" port. Is that
correct?

Or should there actually be a 60 kHz sine wave coming out of pin 1 on
the mixer? If so, something is wrong with my d-psk-r. I am not trying to
use it with any kind of receiver. I just want to see the sine wave on my
scope.

Ray,
AB7HE

-------- Original Message --------
Subject: Re: [time-nuts] WWVB PM Time Questions
From: paul swed <paulswedb at gmail.com>
Date: Tue, August 18, 2020 12:19 pm
To: Discussion of precise time and frequency measurement
<time-nuts at lists.febo.com>

Ray I would tend to agree but I actually am unclear on the context.
Did you actually build a d-psk-r?

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