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Total 5 documents matching your query.

1. [CQ-Contest] How to hook up 4O3A Series S bandpass filters?? (score: 1): Author: John W <xnewyorka@hotmail.com>; Date: Thu, 23 Nov 2017 06:16:21 +0000; Hoping somebody out there has got the Series S 403A bandpass filters. I have a set of them that have been sitting here new in the box for a year or more. I want to use them this weekend but I don't k; /archives//html/CQ-Contest/2017-11/msg00351.html (7,613 bytes)
2. Re: [CQ-Contest] How to hook up 4O3A Series S bandpass filters?? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Thu, 23 Nov 2017 10:03:08 -0700; Mine are labeled TX and ANT. ANT is hooked to the antenna. TX is hooked to the amp. I've been using them for 2 years now and nothing has blown up, so I guess it's correct. Dave Hachadorian, K6LL Yuma; /archives//html/CQ-Contest/2017-11/msg00353.html (9,328 bytes)
3. Re: [CQ-Contest] How to hook up 4O3A Series S bandpass filters?? (score: 1): Author: Pavel Perchine <un7lg@shaw.ca>; Date: Thu, 23 Nov 2017 12:22:33 -0700 (MST); John,Such filters should be symmetrical inside.I would measure VSWR from both ends and install filter by lower VSWR to an amplifier....if there is any noticeable difference.I label my BPFs as well wi; /archives//html/CQ-Contest/2017-11/msg00355.html (8,894 bytes)
4. Re: [CQ-Contest] How to hook up 4O3A Series S bandpass filters?? (score: 1): Author: Jim Brown <k9yc@audiosystemsgroup.com>; Date: Thu, 23 Nov 2017 12:38:34 -0800; In general, yes. Note also that BPFs are designed to work into a MATCHED load, so if there is an antenna tuner, High Power BPFs should be between the power amp and the antenna tuner. A mismatched loa; /archives//html/CQ-Contest/2017-11/msg00356.html (8,985 bytes)
5. Re: [CQ-Contest] How to hook up 4O3A Series S bandpass filters?? (score: 1): Author: Pavel Perchine <un7lg@shaw.ca>; Date: Thu, 23 Nov 2017 18:07:39 -0700 (MST); Jim, You are absolutely right and there is nothing to add. The BPF can perform at 100% from its specification only being connected to a feed line with a good VSWR. It is always recommended to decreas; /archives//html/CQ-Contest/2017-11/msg00357.html (9,609 bytes)

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