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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TenTec\]\s+221\s+CW\s+filter\s+insertion\s+loss\s*$/: 6 ]

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1. [TenTec] 221 CW filter insertion loss (score: 1): Author: "Chuck Guenther" <ni0c@earthlink.net>; Date: Thu, 10 Feb 2005 10:30:29 -0600; I recently acquired the coveted 221 filter from a nice ham who had one unused still in the box from Ten Tec. I installed it in my Omni VI, Opt. 1 with CW roofing filter mod from INRAD. It was a big d; /archives//html/TenTec/2005-02/msg00227.html (7,854 bytes)
2. [TenTec] 221 CW filter insertion loss (score: 1): Author: Bill Tippett <btippett@alum.mit.edu>; Date: Thu, 10 Feb 2005 12:31:20 -0500; Hi Chuck, According to Inrad's plots for 9 MHz filters which should be very similar to Ten-Tec's filters: Filter BW Loss 756 2400 2 dB 753 400 9 dB 760 250 13 dB (similar to #221) http://www.qth.com/; /archives//html/TenTec/2005-02/msg00228.html (8,886 bytes)
3. Re: [TenTec] 221 CW filter insertion loss (score: 1): Author: "Roger Borowski" <K9RB@bellsouth.net>; Date: Thu, 10 Feb 2005 18:52:30 -0500; Chuck, I've presently got the #219 filter in N-1 ands the #221 in N-2 positions along with the #'s 282/285/288 filter choices in the 6.3MHz. IF string. I find myself not using the 285 ever. The 282 a; /archives//html/TenTec/2005-02/msg00232.html (12,390 bytes)
4. Re: [TenTec] 221 CW filter insertion loss (score: 1): Author: "Steve N4LQ" <n4lq@iglou.com>; Date: Thu, 10 Feb 2005 19:12:57 -0500; I have come to the conclusion that there are wide variations in filter attenuation for the same model filter. It should be easy to measure with a signal generator and scope however the I/O impedance; /archives//html/TenTec/2005-02/msg00233.html (14,151 bytes)
5. Re: [TenTec] 221 CW filter insertion loss (score: 1): Author: Duane - N9DG <n9dg@yahoo.com>; Date: Thu, 10 Feb 2005 17:44:49 -0800 (PST); Or I suppose you could use Ten Tec's new "TAPR Vector Network Analyzer" to make short work of characterizing that 221 filter... Duane N9DG __________________________________ Do you Yahoo!? Yahoo! Mai; /archives//html/TenTec/2005-02/msg00239.html (7,985 bytes)
6. Re: [TenTec] 221 CW filter insertion loss (score: 1): Author: "Chuck Guenther" <ni0c@earthlink.net>; Date: Mon, 14 Feb 2005 06:22:46 -0600; First, thanks to the many nice hams who responded to my posting on this, both on and off list. Secondly, my apologies for having seemed to "hit and run" with this topic. I was out of town over the we; /archives//html/TenTec/2005-02/msg00334.html (9,155 bytes)

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