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| To: | [email protected] |
|---|---|
| Subject: | Re: AW: LF: Re: Mini-Whip |
| From: | "Roelof Bakker" <[email protected]> |
| Date: | Wed, 24 Mar 2010 21:40:33 -0000 |
| In-reply-to: | <38A51B74B884D74083D7950AD0DD85E82A1B91@File-Server-HST.hst.e-technik.tu-darmstadt.de> |
| References: | <[email protected]> <38A51B74B884D74083D7950AD0DD85E82A1B81@File-Server-HST.hst.e-technik.tu-darmstadt.de> <[email protected]> <56800827A5644E1BB3F320CB51E2300E@Black> <26E279AD762E44FB937A8A7DF8F934BC@Black> <8C7F2923D86B4517B1C156BA499E96E4@Black> <F277E8E705B545489E6506C9E10C1225@Black> <bd8.4bf8185f.38d7802a@UNKNOWN> <B25CA16D1AFD4B7E889CB2E75FC2F8FE@White> <29746320.1346347.1269244849281.JavaMail.fmail@mwmweb078> <[email protected]> <[email protected]> <38A51B74B884D74083D7950AD0DD85E82A1B87@File-Server-HST.hst.e-technik.tu-darmstadt.de> <0A742B5B9F6A4E84A802D1F98B670E79@JimPC> <[email protected]> <op.u909m21cyzqh0k@pc1> <A988F488F5774961B483A32A05EA05AA@JimPC> <op.u93bwjwayzqh0k@pc1> <38A51B74B884D74083D7950AD0DD85E82A1B91@File-Server-HST.hst.e-technik.tu-darmstadt.de> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
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Hello Stefan,Just like you have reported some time ago, I have done tests to establish the best SNR for a whip antenna at LF in regard to the minimum length. I arrived at the same length as you did at 137 kHz: 30 cm. A longer antenna did improve the signal strength, but not the SNR. The capacitive probe is equivalent to a 30 cm whip. I can't see a reason why the SNR should change with frequency, but I will test it nevertheless. 73, Roelof, pa0rdt |
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