interesting stuff.
I tend to believe the couple who have actually done the mod and say it works
as suggested.  The others who haven't done it, and haven't experienced who
say its bogus don't have a clue and are merely blowing hot air...a rather
hammish thing to do sometimes hi hi.
73
Colin, V A6BKX
----- Original Message ----- 
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, March 17, 2008 7:40 PM
Subject: Re: ts-2000 filter diode mod


> Colin,
>
> I don't have a dog in this fight, but for what it's worth, I saw this back
> and forth on e-ham a few weeks ago:
>
> http://www.eham.net/forums/Misc/7142
>
> Don't know if kenwood  service will do the job, but their shop rate is
> fairly high.   The one in Virginia Beach isn't owned by Kenwood and
started
> out as a audio repair center.   They still do a/v repair and act as
Kenwood
> Service East and now also as Tokyo Hy-powerUSA service.  Perhaps their
> contract with Kenwood would  preclude their doing this type of mod.
>
> There is Cliff Holland at Avid in Texas and a fellow named Mike in Maine,
> who are both highly rated on e-ham and  may be able to performe  this
> surgery.
>
> 73, Steve KW3A
>
>
>
> ----- Original Message ----- 
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, March 17, 2008 6:42 PM
> Subject: ts-2000 filter diode mod
>
>
> > Has anyone who has a ts-2000 on the list ever had the filter diode mod
> > done?
> > This mod is the one where all the diodes in the DSP filter section of
the
> > ts2000 are replaced with high quality, low noise diodes.
> > The noisy receiver in the ts2k is infamous, and a cause for many folks
not
> > to want it or rid themselves of it for a 746/56 series icom with a low
> > noise
> > floor.
> > Apparently, according to the guy on ham.dmz.org, the replacement of the
> > dsp
> > filter diodes with better ones made a huge improvement.
> > He put an image of a before and after  screen shot from a scope.  With
no
> > antenna hooked up, the stock ts2k seems to have about -24DB of internal
> > noise on all HF bands.
> > After the mod, and according to the scope image, it has minus 36 db of
> > noise
> > which is, obviously, a 12DB drop in the internal noise.
> > This is, to the human ear, an equivalent of, I think, halfing the noise,
> > and
> > halfing it again.
> > So, a 200 percent drop in noise from stock i suppose.
> >
> > If anyone has had it done, where did you get it done? Will the kenwood
> > service department perform these kinds of mods if you send them the
parts?
> > Or, is there anyone specific in north america who will do this
particular
> > mod?
> > I think it would vastly improve the receiver in the rig and allow it to
be
> > a
> > really world class dx radio.
> > 73
> > Colin, V A6BKX
> >
> >
> >
>
>
>
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