The mathematical model is well proven. The difference between a isotropic and a dipole antenna is 2.1 dB. The practical accuracy of field strength measurements on a antenna range is +/- 3dB, making this whole discussion theoretical. (Just In The Interest Of Science) or JITIOS! Art, KC6UQH -----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Nigel Gunn G8IFF/W8IFF Sent: Thursday, April 22, 2010 6:15 AM To: w3hf@arrl.net Cc: amsat-bb@amsat.org; Stephen Melachrinos Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some calculations)
I guess because it's impossible to build an isotropic radiator and therefore just as impossible to measure it. Why would I believe, or want to use, something I can neither have, use or measure?
An isotropic antenna doesn't exist.
On 22-Apr-10 10:20, Stephen Melachrinos wrote:
In fact, the amateur community is the only place where there is a
fascination with the dipole reference.