Return to KLUBNL.PL main page
| To: | [email protected] |
|---|---|
| Subject: | LF: E-Field Probe calibration question |
| From: | Andy Talbot <[email protected]> |
| Date: | Thu, 1 Apr 2010 12:02:10 +0100 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:date:received:message-id :subject:from:to:content-type; bh=5rR2bd6AthNDP/H00rU9iWF7xVl5QVyrWzN0MS98R9k=; b=tAv974nTd3FISe8Eh5FS3pysu/vYps8xy4to0SJhmQgftqtS2FnV0skcQILUneX6jI 6RBKW2KFihyyUUqpyYXHcAcpM5TKSQF7BDRHSE94Bvave8K+fqnMM85u8JAb4wiPGbuv 58YVEXcxSEp4vYtridPT/Cpd4VN16nhHxbGVw= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=CsPmxXOln2nb5kgWTNRL3EdZ01mvxOaZKnosdC7BmhdMzhjFeym8000M3DfU4a3Y1+ JwuaGbHERwXAXF6hEbuOKPRomfrnO6PXOFz3CPOFGxcvOxIrbm+k+8TzB46a9O97kqQJ wO9bE9fFrMHaauAGgxJwJq1TjwdE9Uqqx3Ef4= |
| Domainkey-status: | good (testing) |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
|
I have a calibrated E Field antenna (Procomm AAC-1) with a quoted antenna-factor of 0.15V into 50 ohms when placed in a field of 1V/m,
This is mounted in the centre of a car roof and fed via a bulkhead connector to a calibrated measuring receiver inside the vehicle, which we can assume is a Faraday cage at LF, S0 my question is : How is the effective height of the antenna changed? It was 0.15m - the specification said so - but this would have been over an infinite groundplane. Do I regard the body of the car as being the other half of a dipole? In which case, at 1.5m it adds 20dB to the received signal and makes a mockery of calibrated measurement of the E-Field value..
Is it worth persuing this route, or better to stick to untuned loops for calibrated E-Field measurements at LF/MF?
|
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | LF: t): RA3YO 31-03.jpg, henny van elst |
|---|---|
| Next by Date: | LF: Re: E-Field Probe calibration question, Alan Melia |
| Previous by Thread: | LF: t): RA3YO 31-03.jpg, henny van elst |
| Next by Thread: | LF: Re: E-Field Probe calibration question, Alan Melia |
| Indexes: | [Date] [Thread] [Top] [All Lists] |