-------- In message <caf7opz0srwdmed1av2m_tkyw6k+esr+akka+kn623_lf8kv...@mail.gmail.com> , Joseph Gray writes:
>Assuming I made the pictures small enough, attached are two images of >an very old crystal filter that a friend found. The strange thing >about it is the bandwidth - 100 Hz. What could this have been used >for, with such a narrow bandwidth? The 100kHz center frequency pretty much rules out that it comes from carrier telephony. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
