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Von: Dave Brown [SMTP:[email protected]]
Gesendet am: Donnerstag, 1. Juli 1999 11:03
An: [email protected]
Betreff: LF: Re: Fw: Measuring field strength
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name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT
size=2>Dick, </FONT></DIV> <DIV><FONT size=2>For your info, both your
messages re measuring field strength did make it to the reflector.
</FONT></DIV> <DIV> </DIV> <DIV><FONT size=2>In case anyone wants
to use the measurement method you outlined with an SLMS, but at
other than 137 kHz, the relationship including the frequency term is as
follows:</FONT></DIV> <DIV> </DIV> <DIV><FONT size=2>Loop induced
emf(volts) = 2*pi*(field strength in v/m)*(loop area in sq. metres)*
(loop turns)/wavelength.</FONT></DIV> <DIV> </DIV> <DIV><FONT
size=2>Which for the single turn untuned circular loop case you quoted,
can be simplified to;</FONT></DIV> <DIV> </DIV> <DIV><FONT
size=2>Loop induced emf (microvolts) =
16.449*freq(kHz)*loopdia(m)*loopdia(m)*field strength(v/m)</FONT></DIV>
<DIV> </DIV> <DIV><FONT size=2>Ref: Terman, "Radio Engineering",
Section 11, Para 18.</FONT></DIV> <DIV> </DIV> <DIV><FONT
size=2>73</FONT></DIV> <DIV><FONT size=2> Dave </FONT></DIV>
<DIV><FONT size=2>ZL3FJ</FONT></DIV> <DIV> </DIV> <DIV> </DIV>
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