In message <[email protected]>, Didier Jug es writes:
>I think it would be perfectly appropriate to design an LF amplifier >with 12AU7s considering the high signal levels when the storm does >get close. Somewhere, sometime, I saw an homebrew article for a lightning detector which was based on some obscure valve/tube that had grid on the top terminal. A wire from the grid electrode ran to a porcelain isolator and from there to the wire antenna, in order to get the highest possible imput impedance. I have no idea where I saw that article, but some HAM magazine or possibly Elector about 10-20 years back is a good guess. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | 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 -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
