[CQ-Contest] CQ-Contest Digest, Vol 263, Issue 12

[Drew Vonada-Smith]

Charlie,

This is not the case.  While medical equipment has a more strict rating for leakage and other safety issues, it has a LESS stringent rating for EMC emissions, unless it is also designated for home use.  This is because the FCC rating for equipment to be used in homes is more strict than for those limited to the hospital setting.  It is assumed that interference with TV/radio etc. is less an issue in the hospital.

The ratings for EMC susceptibility (can't handle a nearby TX) is the same or can be higher in medical equipment, depending on application.  But hams seldom have that problem with 12 V power supplies.

73, 
Drew K3PA (Medical Systems Engineer)

-----Original Message-----

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Message: 2
Date: Tue, 12 Nov 2024 08:33:28 -0500
From: <charlie at thegallos.com>
To: "'Barry W2UP'" <w2up.co at gmail.com>
Cc: <cq-contest at contesting.com>
Subject: Re: [CQ-Contest] Switching Power Supplies
Message-ID: <045901db3507$757e0d40$607a27c0$@thegallos.com>
Content-Type: text/plain;	charset="utf-8"

I never had an issue with my Samlex, even the older one, and of course my linear Astron works fine, but is  bit on the heavy side

If you want to get a really quiet supply, look for one that is rated for Hospital Medical Equipment ? there is a EMC requirement that is very strict

 
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