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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[RFI\]\s+RFI\s+in\s+the\s+HF\s+spectrum\s+from\s+variable\s+speed\s+Mitsubishi\s+HVAC\s+systems\s*$/: 9 ]

Total 9 documents matching your query.

1. [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: David Propper <k2dp@charter.net>
Date: Fri, 20 Jun 2014 17:27:16 -0500
Hi all, I am considering installing 2 Mitsubishi Split Ductless air conditioning/heat pump units in my home. I have read threads in the past that cite RFI problems in the HF spectrum from HVAC system
/archives//html/RFI/2014-06/msg00125.html (7,713 bytes)

2. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Fri, 20 Jun 2014 15:50:42 -0700
On 6/20/2014 3:27 PM, David Propper wrote: I am considering installing 2 Mitsubishi Split Ductless air conditioning/heat pump units in my home. I have read threads in the past that cite RFI problems
/archives//html/RFI/2014-06/msg00126.html (8,027 bytes)

3. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: "Dale J." <dj2001x@comcast.net>
Date: Fri, 20 Jun 2014 18:28:50 -0500
That's an nice idea, but what if they reject it. Then the next contractor rejects it too and the next and the next. What then?? Have you personally had success using this approach with prospective co
/archives//html/RFI/2014-06/msg00127.html (8,767 bytes)

4. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: D C _Mac_ Macdonald <k2gkk@hotmail.com>
Date: Fri, 20 Jun 2014 18:47:53 -0500
I have a local ham friend who has a Mitsu system. If I recall, it is very close to his tower and I have asked him to comment on the RFI aspect. Since he is a pretty serious DXer and contester, I'm su
/archives//html/RFI/2014-06/msg00128.html (9,379 bytes)

5. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: Jeff Stevens <jeff@mossycup.com>
Date: Sat, 21 Jun 2014 00:49:10 -0400
Last summer I had an MUZ-FE18NA installed. My antenna, a delta loop cut for 40m, is located about 50' from the outdoor unit and 30 feet from the indoor unit. I'm a casual operator and have not notice
/archives//html/RFI/2014-06/msg00130.html (7,738 bytes)

6. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: W0MU Mike Fatchett <w0mu@w0mu.com>
Date: Sat, 21 Jun 2014 18:27:47 -0600
Do people operate in the Summer HI! If all the vendors turn you down on the RF issue you can look for more vendors or roll the dice. What other choice do you have. If the device causes interference y
/archives//html/RFI/2014-06/msg00131.html (8,648 bytes)

7. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: "Karin Johnson" <karinann@tampabay.rr.com>
Date: Sun, 22 Jun 2014 12:34:49 -0400
Just to chime in on some of the issues regarding variable speed motors used in home air conditioning systems. I have some personal experience with quieting a new installation of an 18 SEER split syst
/archives//html/RFI/2014-06/msg00132.html (11,548 bytes)

8. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Sun, 22 Jun 2014 09:56:17 -0700
Several comments. First, common mode current on wiring external to equipment is one of the most common mechanisms. Another common cause is magnetic coupling from the field established by noise curren
/archives//html/RFI/2014-06/msg00133.html (8,950 bytes)

9. Re: [RFI] RFI in the HF spectrum from variable speed Mitsubishi HVAC systems (score: 1)
Author: "Karin Johnson" <karinann@tampabay.rr.com>
Date: Sun, 22 Jun 2014 14:50:27 -0400
Jim is correct on all counts. The AC line filter was a very high end Corcom. I don't remember the part number right now. It was installed inside the mechanical metal enclosure of the inside blower ho
/archives//html/RFI/2014-06/msg00134.html (8,456 bytes)


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