It has been interesting reading all the 10811 ideas. I haven't had time to respond to them individually. I would recommend reading my oven paper:
http://www.karlquist.com/oven.pdf which will put some of the oven ideas in perspective. With tweaking, we could get the thermal gain of the E1938A over 1 million using just a single oven and nothing exotic. In production they ran in the several 100,000's. I would also note that the 10811 has a fairly substantial humidity coefficient of frequency. Thus the first order of business is to get the hermetic version of the 10811. The common version that is open is never going to be immune from the environment. The E1938A was immune from humidity effects, even though it was not hermetic. It was nearly immune from temperature effects as well. It still had the same 2G turnover effects as well as crystal frequency jumps, since the crystal was essentially the same as the 10811 crystal. You would never mistake an E1938A for a Rb standard by looking at a strip chart. The best that any 10811 could do would be to approach E1938A performance. But go ahead, have fun and learn! Rick Karlquist N6RK _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
