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| To: | [email protected] |
|---|---|
| Subject: | LF: Re: LF Components |
| From: | "Hugh M0WYE" <[email protected]> |
| Date: | Thu, 16 Sep 2004 09:07:30 +0100 |
| References: | <001c01c49b55$09f086a0$6507a8c0@Main> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Alan said: MMG-Neosid, describe these rods "fluted", although they don't do them as large in diameter as 20mm. They are sold as "Antenna Rods", but no explanation is given in the catalogue for the flutes. When I tried using ferrite rods at high power, i.e. TX not RX, I found that the ferrite heated up directly under the windings, the flutes might help reduce this.38-2670 Ferrite rod 20mm diam by 150mm long, this is really a "bulked up"aerial rod !! I dont know what they are for but there are 6 slots along thelength...could it be to reduce eddy currents ?? I dont think they are intended for a winding. I haven't looked at the permiability yet, but Iguess they might be better than using a "bundle" of smaller rods, as I do ina 35mm diam solenoid. One thought is that it would be easy to trap a drive cord in them for a permiability tuned inductor. 73 Hugh M0WYE |
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