| To: | <jim.thom@telus.net>, <topband@contesting.com> |
|---|---|
| Subject: | Re: Topband: Series LC to notch AM broadcast ? |
| From: | <n4is@comcast.net> |
| Date: | Sun, 20 Feb 2022 19:16:32 -0500 |
| List-post: | <mailto:topband@contesting.com> |
>>HP filters offer little rejection towards the top end of the AM broadcast band..... like 1200-1710 khz. << I built several HP filters with >40 db attenuation on 1.7 KHz based on QST, I don't remember the year 90's about it. But some good information here > https://www.qsl.net/wb5wpa/Filter/DesignAMBrickWall_08.pdf You can but a 200W HP at DXE, this filter is the best you can get and very well calibrated/built. https://www.dxengineering.com/parts/dlw-fl1718 73' N4IS JoseCarlos _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector |
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