I used a Samlex 1223 in S Korea for a year. Worked great on 220V.
Just disconnect the yellow jumper. Instructions come with the power
supply. Never noticed any RF or other noise.
Evan, W5IQS
______________________________________________________________
From: Tom Hammond <[EMAIL PROTECTED]>
To: Ken Alexander <[EMAIL PROTECTED]>,Elecraft
<elecraft@mailman.qth.net>
Subject: Re: [Elecraft] Power supply for 220 VAC
Date: Wed, 10 May 2006 04:56:48 -0500
>Ken:
>
>The Samlex 1223 switching P/S is 'jumperable' for 120/220 VAC and
>it's not terribly noisy (RF-wise). In fact, many users report no
RFI
>from these supplies.
>
>If you do notice some RFI, I have some info on added filtering for
>this supply available on my website at www.n0ss.net
>
>I have one of these supplies and have been quite pleased with its
>performance.
>
>73,
>
>Tom Hammond N0SS
>
>At 09:47 PM 5/9/2006, Ken Alexander wrote:
>>I'm planning a short DXpedition to a 220V country.
>>Does anyone know of a quiet switching power supply
>>that would run on 120V 60Hz and on 220V 50Hz?
>>
>>I'm leaning towards a QRP operation, requiring a
>>smaller supply, approx 5A at 12V output. However,
>>since this is likely to be a once in a lifetime deal I
>>might take a 100W transceiver and would then need a
>>larger supply, say 40A at 12V.
>>
>>Any guidance would be appreciated. Thanks in advance.
>>
>>Ken Alexander
>>VE3HLS
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