[RFI] Fwd: RFI Digest, Vol 241, Issue 20

[James Jordan]

I have a Carrier "Infinity" system with fully VS drives on both the
compressor and air handler fan. It's their top of the line most efficient
system. Never heard a peep of RFI from it. I'll walk closer to the units
with an AM radio to see if I'm missing something and if I hear anything
I'll post again.
73,
Jim K4QPL

On Tue, Feb 14, 2023 at 12:57 PM Dennis Monticelli <
dennis.monticelli at gmail.com> wrote:

> The variable speed fan motors are bad news.  Fixed speed or multiple fixed
> speed (selected by winding) are fine.  However the fan motor isn't the only
> motor in the system.  Look into the compressor too.  There is also a lesser
> chance that the controller board generates noise you can pick up.  If
> accessible during installation, some ferrite sleeves on the digital board's
> wires are a good idea.
>
> Both of my Daikin HVAC units are completely quiet but those models were
> chosen with no PWM drive motors and I did put ferrites on the controller
> board for extra insurance.
>
> Dennis AE6C
>
> ---------- Forwarded message ---------
> From: <rfi-request at contesting.com>
> Date: Tue, Feb 14, 2023 at 9:00 AM
> Subject: RFI Digest, Vol 241, Issue 20
> To: <rfi at contesting.com>
>
>
> Send RFI mailing list submissions to
>         rfi at contesting.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         http://lists.contesting.com/mailman/listinfo/rfi
> or, via email, send a message with subject or body 'help' to
>         rfi-request at contesting.com
>
> You can reach the person managing the list at
>         rfi-owner at contesting.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of RFI digest..."
>
>
> Today's Topics:
>
>    1. RFI from Carrier Heat Pump? (RVZ)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 14 Feb 2023 04:54:07 +0000 (UTC)
> From: RVZ <rlvz at aol.com>
> To: rfi at contesting.com
> Subject: [RFI] RFI from Carrier Heat Pump?
> Message-ID: <735693955.1361834.1676350447226 at mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
>
> Hi Guys,
> ?I've seen posts where some Air Conditioners and Furnace units with
> variable speed motors create RFI on the Ham Bands.? I'm thinking of
> purchasing a new Carrier 3.5 ton Heat Pump, Model 25SCA542, with a "fixed
> speed" blower and am wondering if anyone has had RFI issues with
> these??Thank You in advance for your thoughts.?73, Dick- K9OM? (
> RLVZ at aol.com
> )
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
>
> ------------------------------
>
> End of RFI Digest, Vol 241, Issue 20
> ************************************
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>