>Hi Ed,
>
>Loran works at low frequencies, as you know. This means that for optimum
>reception, you need maximum voltage, not maximum power transfer. It is
>usual to terminate the high R ,low C, and high impedance whip antenna with
>an even higher impedance receiver input impedance, to minimise the voltage
>drop due to the antenna impedance. Is there another reason for requesting
>the impedance ? What matters is signal-to-noise ratio.
Huh? Maximum voltage? What does this guy mean? Are we talking
about transforming (matching) the antenna impedance to a value such
that the receiver's noise figure with this source impedance is
optimized? That would make sense. Anyway, we're getting off-topic
on computational electromagnetics. Sincerely,
--
__ __ ______ __ John Wood
/ |\ / /\ / ____ \ / /\ Code 5551
/ | ||/ / / / /\__/ /| / / / U.S. Naval Research Lab
/ /| |/ / / / /_/_/ / / / / / 4555 Overlook Avenue, SW
/ / | / / / ___ / / / / / Washington, DC 20375-5337
/ / /| / / / /\_| |\_/ / /_/_ (202) 767-2608
/_/ / |_/ / /_/ / |_|| /_____/\ (202) 767-3377 (FAX)
\_\/ \_\/ \_\/ \_\| \_____\/ e-mail: wood_at_itd.nrl.navy.mil
WWW: http://server5550.itd.nrl.navy.mil
YOU CAN ONLY SEE A THING WELL WHEN YOU KNOW IN ADVANCE WHAT IS GOING
TO HAPPEN. - John Tyndall
--
The NEC-List mailing list <nec-list_at_gweep.ca>
http://www.gweep.ca/mailman/listinfo.cgi/nec-list
Received on Tue Jan 22 2002 - 09:25:56 EST
This archive was generated by hypermail 2.2.0 : Sat Oct 02 2010 - 00:10:42 EDT