[time-nuts] Spectracom 8161 "Standard Frequency Receiver - Oscillator" for WWVB (and question...)

[paul swed]

Burt
I like it the "thumpers". The really annoying chart recorders I tend to
disconnect. Imagine 2-3! I use a software recorder these days. Quite and
consumes 10 X the power but no actual paper. Can't find that anymore at a
price you might care to pay for.
My other favorite box is the Gertch RLF. Not sure why it caught my eye on
the floor at a hamfest but it did and what a bargain with a nice xtal
filter. Have to love the RTL logic.
We recently republished the details on the new improved dpskr here on
time-nuts June approx. Do a search. It does make those old boxes work again
without any internal mods. It also handles the fast and slow code.
As Bob says you can get interesting accuracy over several days as the
papers say even with the propagation.
Regards
Paul
WB8TSL

On Mon, Oct 5, 2020 at 11:59 AM Burt I. Weiner <biwa at att.net> wrote:

> The 45 degree phase shift was a form of identification for WWVB and
> also served as a marker for chart recorders.  The shift occurred from
> 10-minutes past the hour until 15 minutes past the hour.
>
> Before GPS came along, WWVB was my main frequency
> standard/reference.  I had two Gertsch RLF devices and a "thumper"
> chart recorder.  It was really a lot of grief trying to keep my
> relatively poor crystal oscillators on frequency.  If I was able to
> see the 45-degree shift I felt as though I was really accomplishing
> something.  :]  I now have two DATUM 9390-52054 GPS units.  GPS has
> really spoiled me!
>
> Up until the phase shift was added I used a Symmetricom 8170, not so
> much as a frequency reference, but as a clock in my shoppe.  The 8170
> is still running, but displays some strange combination of numbers
> that actually tell me the status of it trying to set.  I suppose I
> should build a de-psk-er thingy, but I lost the paper work on how to
> do it.The 8170 presently serves as a night lite.
>
> Burt, K6OQK
>
> At 08:36 AM 10/4/2020, someone wrote:
> >Now, there is a 45 degree (2.1 micro) modulation on the WWVB
> >signal, > that shows up as time-tags on the strip-chart, so it is
> >not trivially...
>
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California U.S.A.
> biwa at att.net
> K6OQK
>
>
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