To: | [email protected] |
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Subject: | Re: LF: Re: HB9ASB... |
From: | Stefan Schäfer <[email protected]> |
Date: | Wed, 10 Aug 2011 00:03:55 +0200 |
In-reply-to: | <12C475F3F4C84B818461753F2E8A60A6@PcMinto> |
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Hi Minto, Am 09.08.2011 22:48, schrieb Minto Witteveen: You are right w.r.t. the cable being (a significant) part of the working of the Miniwhip antenna. [...] I don't think so. There should be no difference between a 5m and 10m long cable. I think about a capacitive divider. The probe has about 3 pF, that's one plate of the C. The other one is the cable and metal connected. Once if this part of the C has say >10 * 3 pF, the difference between longer cables become smaller and smaller. I think it is just the S/N that rises due to lower becoming noise and higher signal levels. On a flat field without trees and houses, you have excellent reception even with a 2m pole :-) 73, Stefan |
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