I have a MAS6180C AM receiver chip, on a board with a few other parts to
complete the receiver. I did not make the board, it came from
Universal-Solder Electronics in Canada. The date on the chip datasheet
is 2014 and on the receiver board 2016, so after NIST messed up WWVB in
2012.
Robert
On 08/19/2021 07:23 PM, Bob kb8tq wrote:
Hi
It’s a good bet that whatever the spec on that Isotemp OCXO, it’s way better in
terms
of temperature and aging then the DS3231. Is it still on frequency (however
many years
later …..) who knows ….
Many of the “time oriented” WWVB devices stopped working when they put in the
new
modulation scheme. It’s a pretty good bet that this applies to the device you
have.
Bob
On Aug 19, 2021, at 6:55 PM, Robert DiRosario <ka3...@comcast.net> wrote:
I got a Trak Systems "Time Code Translator" from ebay. It's a 1U box with
large LEDs for DOY and H/M/S that translates IRIG-A to NASA-36 time code. I plan on
using the case for my WWVB clock.
Unexpectedly it has an Isotemp OCXO in it, model OCXO59-11-2, frequency marked
as 1.000 MHz The Isotemp website is more or less dead, it has no information
on it. Does anyone have any information on this model, like how accurate it
is? It has only three wires, which I assume are power, ground and output, with
no EFC input.
One thing that I'm sill note sure about is what to do when the receiver is not
receiving WWVB. I was thinking of using something like the DS3231 RTC module.
If this OCXO is better, I may use it.
Thanks
Robert
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