[UK-CONTEST] Noise from Samplex SEC1223 Noise

[Andy Cook, G4PIQ]

I think you may find a difference in these units between those sold in the
US and those in the EU with the CE mark. We had a variety of them at 5U5Z in
2004 & one sourced from the US was missing filter components and was a huge
noise source on 80/160m. The EU sourced units were just fine.

Merry Xmas everyone,

Andy, G4PIQ

-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com]On Behalf Of Phil Catterall
Sent: 24 December 2005 17:34
To: uk-contest
Subject: [UK-CONTEST] Noise from Samplex SEC1223 Noise


Hi Clive

With regard to this switched mode PSU - I have two of them.

I only detected a little noise on one occasion on 3.5 MHz and it wasn't
significant. It was when I was using an inverted vee antenna fed with 300
ohm ribbon. Since my fixed station is now all coaxial fed I haven't detected
any interference from the units I have at all.

Merry Xmas and 73

Phil G4OBK

>>>>>>>>>>>>>>>>>>>>>>>>>>>snip
Message: 2
Date: Sat, 24 Dec 2005 16:45:37 -0000
From: "Clive Whelan" <clive.whelan at btinternet.com>
Subject: [UK-CONTEST] Samlex SEC1223
To: <uk-contest at contesting.com>
Message-ID: <NJEKIHLAGJFHHNGLLDFMGEIAFEAA.clive.whelan at btinternet.com>
Content-Type: text/plain; charset="iso-8859-1"

I have had a couple of reccos. for this PSU to address my trigger happy
problem with the Nissei and the IC7400.


So far so good. However, the eham.net reviews cite serious switch mode noise
problems on 80&40m, although most don't mention it, and give it 5/5.

Does anyone else here have experience of the unit, particularly in respect
of switch mode noise?

73

MX es HNY

Clive
GW3NJW
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