[ICOM] Astron RS-35M Radiated Noise

[Rob Gallagher]

I checked all screw connection to chassis, filter cap, etc.

Thanks for the reply,

Rob

----- Original Message ----- 
From: "Mike E" <eagxxx at hotmail.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Sunday, January 30, 2005 1:09 PM
Subject: Re: [ICOM] Astron RS-35M Radiated Noise


> Rob,
> You might want to check the screws that attach
> the circuit board to the large filter cap.  Mine
> became slightly loose over time.
> I don't know if this would solve your problem
> or not, but it solved the hum problem that my
> VS-35M had.
> -Mike N3KCT
>
> ----- Original Message ----- 
> From: "rob" <rob at gallagher.net>
> To: "ICOM Reflector" <icom at mailman.qth.net>
> Sent: Sunday, January 16, 2005 10:14 PM
> Subject: [ICOM] Astron RS-35M Radiated Noise
>
>
> > Anyone have a problem with the PS generating 60Hz radiated noise when
even
> > minimal load(<2A) is applied.  It maintains regulation and ripple is
> > <50mvp-p.
> >
> > I noticed this when monitoring 160m.   Then got the HT Kenwood TH-F6a
and
> > tracked it down to the RS-35M.  No noise without load. Went from an S-2
> > noise floor to S-7 when in receive with a IC-746Pro and S-9 when
> > transmitting 100Watts.
> >
> > I also have a RS-35(non M) and it does not do this.  I interchanged will
> > socketed and screwed in devices but this did not improve the noise.
> >
> > I suspect eddy currents in the transformer but just a guess now.
> >
> > Ideas?
> >
> > Tnx,
> >
> > Rob - W3RG
> >
> >
> > ----
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> ----
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