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| To: | [email protected] |
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| Subject: | LF: LF coil tuning |
| From: | Peter Dodd <[email protected]> |
| Date: | Sat, 29 Jan 2011 23:10:08 +0000 |
| In-reply-to: | <[email protected]> |
| References: | <DF8D483685124FFBA8436BD2C5850C8E@White> <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
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The traditional method of tuning an LF loading coil is to use a variometer.I have been investigating methods of tuning coils for mobile use and one method that appeared briefly in one of the ARRL Handbooks of the 50s was the shorted turn method of tuning. I tried a home made coil of 136uH on a 5cm diameter former and using a shorted turn of 2mm insulated wire and obtained a tuning range of 32uH. (136 - 102uH). Has anyone out there tried this? Regards Peter G3LDO |
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