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| To: | [email protected] |
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| Subject: | LF: variometers |
| From: | Dick Rollema <[email protected]> |
| Date: | Fri, 07 Jul 2006 11:01:39 +0200 |
| Delivered-to: | [email protected] |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
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To All from PA0SE A disadvantage of variometers is that although the inductance can be varied the loss resistance of the coils remains the same. That means that when adjusted near minimum inductance Q = X/r can become very low. In practice the effect is diluted by the earth resistance which in most cases is considerably larger than the coil resistances. 73, Dick, PA0SE |
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