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| To: | [email protected] |
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| Subject: | SV: LF: 137 Carrier |
| From: | "Johan Bodin" <[email protected]> |
| Date: | Fri, 26 Mar 1999 16:32:27 +0100 |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
Hello Rik and others. A selective voltmeter can be built using a gyrator. If you have "The LF Experimenters Source Book" (RSGB), take a look at the gyrator tuned VLF receiver on page 3.7. The gyrator is described in more detail on page 5.1. With suitable OP-amps (fast!), I guess that such a circuit can be useful as a QSB monitoring receiver on 137 kHz. 73 de Johan |
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