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| To: | [email protected] |
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| Subject: | Re: LF: Monitoring 2190m WSPR |
| From: | N1BUG <[email protected]> |
| Date: | Thu, 26 Oct 2017 11:26:58 -0400 |
| In-reply-to: | <6A5A0D655C1547DD91B4A70E43248F0D@DELL4> |
| References: | <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <6A5A0D655C1547DD91B4A70E43248F0D@DELL4> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
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Thanks Jay.I am far from knowledgeable about these materials but that agrees with measured performance of several receive bandpass filters I built for LF/MF last winter. I tried several different ferrite materials and 61 performed best. However I have no idea how that would compare to the powdered iron T50-2 normally used in this circuit. In the long run I think I may order a couple more LPF kits and build one both ways for comparison. Who knows, I may learn something! 73, Paul N1BUG WI2XTC On 10/26/2017 10:46 AM, [email protected] wrote: Paul 61 material has the best Q of any of the ferrite materials (that I'm aware of) at LF/MF. Can't say whether or not the change to a different coil would be appropriate in that circuit. Jay W1VD WD2XNS WE2XGR/2 |
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