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1. [RFI] UPS Radiated Interference (score: 1): Author: "Bob K0NR (email list)" <list@k0nr.com>; Date: Fri, 18 Jan 2008 10:38:27 -0700; I tracked down some RFI problems on the 2M band to several small Interruptible Power Supplies in my house. These are the half-a-shoe-box size units intended for use with PCs. I assume the switching r; /archives//html/RFI/2008-01/msg00049.html (6,482 bytes)
2. Re: [RFI] UPS Radiated Interference (score: 1): Author: wa4tuk <wa4tuk-rf@comcast.net>; Date: Fri, 18 Jan 2008 22:11:54 -0500; They certainly could be switching supplies; however, the ones I've disassembled after failing have had iron core laminated transformers. These were APC and Tripp-Lite brands. In fact, I've contemplat; /archives//html/RFI/2008-01/msg00050.html (8,112 bytes)
3. Re: [RFI] UPS Radiated Interference (score: 1): Author: "Bob K0NR (email list)" <list@k0nr.com>; Date: Sat, 19 Jan 2008 18:31:37 -0700; Pat, Yes, I unplugged the equipment that the UPS is powering, so it really is the UPS. I said "switching regulator" but it might be more accurate to say "switching inverter" (DC battery to 120 VAC).; /archives//html/RFI/2008-01/msg00051.html (8,848 bytes)
4. Re: [RFI] UPS Radiated Interference (score: 1): Author: wa4tuk <wa4tuk-rf@comcast.net>; Date: Sat, 19 Jan 2008 21:28:29 -0500; The units I salvaged used the transformer to trickle charge the battery and then the transformer was driven by an inverter from the 12 volt battery to made pseudo sine waves when needed but not all t; /archives//html/RFI/2008-01/msg00052.html (10,596 bytes)
5. Re: [RFI] UPS Radiated Interference (score: 1): Author: "Bob K0NR (email list)" <list@k0nr.com>; Date: Sat, 26 Jan 2008 21:25:59 -0700; David K1TTT recommended trying UPS units from either APC or TrippLite. I bought a TrippLite (Model BC 350) from tigerdirect.com The TrippLite is much, much quieter with respect to RFI compared to the; /archives//html/RFI/2008-01/msg00059.html (11,845 bytes)
6. Re: [RFI] UPS Radiated Interference (score: 1): Author: "Alex" <kr1st@amsat.org>; Date: Sun, 27 Jan 2008 11:33:19 -0500; Here's an example of an experience I had with a Cyberpower UPS, model BC1285C, in May, 2006: http://www.kr1st.com/bc1285c.htm The web page only describes a personal experience. This does not mean I a; /archives//html/RFI/2008-01/msg00062.html (7,785 bytes)

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