That's a very old WWVB receiver!
* As you can see from that photo, that model was introduced before NIST was
created from NBS in 1988 (see the "NBS OUTPUT" BNC).
* The "WWVB Continuous Monitored" label appears to be a Tektronix internal
calibration sticker. You can see the Tek "bug" logo (CRT
Bill
Thats exactly why they showed up. Though I still tend to see silly prices.
Heck serious humor you still see the GOES satellite Truetime DC468s for
sale again at silly costs and thats been dead since 2001 or so. (Unless you
have a GOES simulator)
So you are right GPSDOs have taken their place
Hi
You *can* do all the work to get a WWVB based device running, it’s not
impossible.
Compared to a GNSS based device, the WWVB has a number of issues. The biggest
is the twice a day ionosphere based disruption. There is no practical way to
get around
that. The net result of the this and the o
Is this why so many really high end devices are basically dumped on eBay
now? I wondered why SRS device was so cheap now considering price of the
SR620. It's too bad they don't work anymore. I'm sure when this happened
it was a HUGE let down to many here that were using them? What's the best
mo
Agree with Bobs comment. The 180 degree phase flip killed all of the gear
unless significant mods are done or the d-psk-r is used. Great old boxes
though.
Regards
Paul
WB8TSL
On Sun, Oct 4, 2020 at 3:15 PM Bob kb8tq wrote:
> Hi
>
> This is another of the many devices out there that pre-date the
Magnus,
Thanks for the manual pointer! A quick scan doesn't offer me much
insight to what the mod might be for (likely have to open it up as you
suggest). The basic unit gives you the option of phase-locking the
internal standard osc to WWVB with an output at .1, 1, 5, or 10 MHz , and
you ca
Greg,
The flat glass is about 1.6 mm think (likely 1/16th inch). This
dimension isn't critical.
The diameter is 336 mm, not a mm more. 335 or 334 would also work, but
not less than that.
I have an extra glass piece from tear-downs. Yours if you want it.
Contact me off-list at t...@leapseco
Hi Greg,
Assuming he purchased it new, why doesn't he make a claim against the
shipper or talk to the sender about it ?
Would seem easier than trying to get a lens cut from a locol supplier.
BillWB6BNQ
On 10/4/2020 9:54 AM, Gregory Beat via time-nuts wrote:
Has anyone measured the size
Has anyone measured the size of Glass Lens used in the La Crosse UltrAtomic
404-1235UA-SS wall clock?
My brother’s clock was received with a broken lens, and I am not near my clock
(to disassemble) for taking to measurements.
==
I believe that this lens is FLAT (not Concave), 14 inches in diamete
Hi
This is another of the many devices out there that pre-date the
“modern” 180 degree phase modulation approach on WWVB. Getting
one of these to run properly with the new modulation approach would take
some major mods …..
Bob
> On Oct 4, 2020, at 10:23 AM, Magnus Danielson wrote:
>
> Hi,
>
Hi,
I got a bit curious, so I dug up the manual (Available from Orolia that
Spectracom is part of):
https://www.orolia.com/sites/default/files/document-files/8161_manual.pdf
It is apparent that the reference oscillator is actually free-running
but compared to the WWVB, so you manually tune it to
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