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1. [Yaesu] Collins Filter F455FA21 (score: 1): Author: "VO1HP" <fdavis@nfld.net>; Date: Wed, 05 Nov 2008 17:13:55 -0800; Has anyone tried to use a Collins F455FA21 filter (same filter used in 75S3B) in the orgional MP sub receiver to replace the ceramic filter? Frank VO1HP ______________________________________________; /archives//html/Yaesu/2008-11/msg00000.html (5,890 bytes)
2. Re: [Yaesu] Collins Filter F455FA21 (score: 1): Author: "Hardy Landskov" <n7rt@cox.net>; Date: Wed, 5 Nov 2008 19:28:10 -0700; I have used a 5.8 KHz Collins Mechanical Filter (P/N 526 8636 010) in my FT-990 in place of the AM ceramic filter with excellent results. I changed the bias resistors from 4.7K to 2K and added 30 pF; /archives//html/Yaesu/2008-11/msg00001.html (7,810 bytes)

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