Mark Sims wrote: > Of course, any Time Nut worth the name would install a servo controlled > section of trombone line in his coax to maintain a constant electrical length > ;-) > > > ---------------------------------------- > This demonstrates that achieving nanosecond propagation delay stability > is unlikely when using long runs of inexpensive cable exposed to diurnal > temperature cycling. > Mark
Since temperature cycling is often used to stabilise the phase shift/delay of coax delay line assemblies even when using phase stable cables, the question that arises is: Does the electrical length continue to change with time or does it stabilise after a number of diurnal temperature cycles? Or should one temperature cycle (3 or more times) the cable over a wider range than the ambient temperature fluctuations? If one doesn't temperature cycle hardline the dielectric can protrude from the ends when exposed to diurnal temperature cycling and break the coax connector solder connection. Bruce _______________________________________________ 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.
