[amsat-bb] TS-2000 Vintage Question

[John Geiger]

The NB on my 2003 model ts 2000 actually does a really good job of taking
out the RFi crud I get here on HF and sometimes on 2 meters which makes it
useful on Mode B operations.  Unlike some other NBs it doesn't distort the
received signals.

73 John AF5CC

On Monday, February 5, 2018, D. Craig Fox <DFox at rwglaw.com> wrote:

> If I recall correctly, persons posting on the TS2K yahoo group noted that
> the finals originally were bipolar devices and that Kenwood upgraded those
> to mosfets before the upgrade.  This discussion concerning how to choose a
> used TS2000 appears around July 5, 2017.
>
> As for the NB, mine is on all the time and provides “some” relief, but
> only on USB, and yes on the sats.
>
>
>
> Craig
>
> N6RSX
>
>
>
> *From:* John Geiger [mailto:af5cc2 at gmail.com]
> *Sent:* Monday, February 5, 2018 5:26 PM
> *To:* D. Craig Fox <DFox at rwglaw.com>; AMSAT BB <amsat-bb at amsat.org>
> *Subject:* Re: [amsat-bb] TS-2000 Vintage Question
>
>
>
> What about the MOSFETs made them an upgrade?  I was unaware of the change,
> although I do feel that somewhere along the line Kenwood changed the noise
> blanker circuit and that the NB in older TS2000s was better.
>
> 73 John AF5CC
>
>
>
> On Mon, Feb 5, 2018 at 5:29 PM, D. Craig Fox <DFox at rwglaw.com> wrote:
>
> As far as I know, the birdie problem has been there from the start. In
> 2008 there was an issue with ceramic filters. I have a vintage 2002 (serial
> 407XXXXX) and have never had an issue with it. You can always check out the
> yahoo groups TS2000 archives.  According to the TS2K group, after 2008,
> Kenwood started using mosfets which most feel was a significant upgrade.
>
> Craig
> N6RSX
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Richard
> Lawn
> Sent: Sunday, February 4, 2018 2:00 PM
> To: Amsat BB <amsat-bb at amsat.org>
> Subject: [amsat-bb] TS-2000 Vintage Question
>
> I'm contemplating trading a IC-7300 for a TS-2000. I need a backup radio
> for satellites and EME. Are there any issues you users know about the 2000
> vintage 2002? Was it plagued with birdies in the sat passband?
>
> Rick, W2JAZ
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