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Re: [RFI] Ruud Furnaces and AC units

To: rfi@contesting.com
Subject: Re: [RFI] Ruud Furnaces and AC units
From: Steve Dyer W1SRD via RFI <rfi@contesting.com>
Reply-to: Steve Dyer W1SRD <w1srd@yahoo.com>
Date: Sun, 6 Jul 2025 20:11:08 -0700
List-post: <mailto:rfi@contesting.com>
Carrier and Bryant are the same gear.

On 7/6/2025 5:24 PM, Dan K2YWE wrote:
Electronically Controlled Fan. I'm not so sure. The are some in high end
Carrier AC/heat pumps that some local hams have reported as EMI quiet.
Probanly some other brands too.

73, Dan

On Sun, Jul 6, 2025, 3:51 PM Jim Brown <jim@audiosystemsgroup.com> wrote:

What's an ECM fan?  If it's variable speed, it's almost certain to be
noisy.

73, Jim K9YC

On 7/6/2025 8:54 AM, Dan K2YWE wrote:
Is there any group knowkedge with respect to RFI from Ruud oil furnaces
and
AC units that have ECM fans?

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