[time-nuts] Downsizing

2021-10-22 Thread Bob Quenelle
Please contact me off list if you are interested in any of the following Synergy Systems Lucent M12+ timing receiver with antenna. In shielded box. $20. Adafruit Ultimate GPS Breakout with battery clip and SMA to uFL adapter cable. Purchased 2018, barely used.

[time-nuts] DAC for OCXO disciplining

2020-01-14 Thread Bob Quenelle
I’ve used the 16 bit Maxim MAX5541CSA and the 18 bit Analog Devices AD5680. Both work well. Took me a while to learn the AD5680 uses SPI mode 2. For me, 16 bits gives 76 uV step size, 70 uHz. ___ time-nuts mailing list -- time-nuts@lists.febo.com To

[time-nuts] OCXO Advice

2020-01-11 Thread Bob Quenelle
I’d like some advice about the OCXO’s I’m using. They’re UCT 108663-10, double oven, purchased from the auction site. The attached graph shows the frequencies of 2 very similar circuits compared to the 10 MHz output of an LPRO-101. At 7.6 hours, the blue line design switches from GPS PLL to

[time-nuts] OCXO Question

2019-04-25 Thread Bob Quenelle
In testing a new OCXO, I found it had more drift than a previous one. I'm happy with the better one, not so much for the poorer one. I'd like get some opinions on whether the performance of both seems reasonable. I bought both from a US seller. They’re UCT 108663-01, a double oven OCXO. I