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| To: | [email protected] |
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| Subject: | LF: LF antenna voltage |
| From: | [email protected] |
| Date: | Sun, 10 Dec 2000 13:26:28 EST |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
Laurie,on our LF antennas the voltage is almost constant along the wire, so its peak value is simply Up = 1.41 * I_eff / (2 * pi *f * C) ;e.g. with 600pF antenna capacitance and 3 amps, you will get 15.6 kV on 72 kHz, which shouldn't be a problem in dry weather. My thin 137 kHz ant is similar with 1.5 amps into 170 pF, giving 14.6 kV. One of the 1 mm perlon strings once melted when it was attatched to the wire end without any insulator. 73 de Markus |
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