[Kenwood] FS: Kenwood TS950SD dual receive HF radio

Tue Dec 12 19:10:36 EST 2017

Bob,

The TS870 did actually use crystal filters.  If you read the section of the
QST review of the TS870 where it talks about how the DSP is implimented, it
mentions that it uses 3khz crystal filters at both the 2nd and 3rd IFs and
then achieves the final bandwidth by overlapping these filters.  The TS950S
and SDX do have a manual notch which is usually better than an autonotch.
I didn't get to use the 870 I had briefly under heavy contest conditions,
but from everyday operating, I think the TS950SD will filters was a better
receiver than the 870.

73 John AF5CC

On Tue, Dec 12, 2017 at 6:02 PM, <k3ac at aol.com> wrote:

> Thanks very much to Cliff Holland for clearing up the differences in all
> the 950 versions. As I recall, the SDX was Kenwood’s first venture into DSP
> design so was a hybrid, retaining ability to use analog crystal filters, as
> was used in the 850. When the later TS-870 was released a few years after
> the 950SDX, the DSP design was an improved design with elimination of all
> analog filters and addition  of DNR and Beat Cancel (auto notch). . In
> other words, a pure digital design, which was carried through to the
> current TS-990/590 radios.
>
> Bob K3AC
>
> k3ac at aol.com
>
> On Tuesday, December 12, 2017, John Geiger <af5cc2 at gmail.com> wrote:
>
> Hi John, The SDX is an almost completely different radio. You can make a
> Kenwood TS950S a 950SD by adding the filters and DSP unit. There is no way
> to make a 950S or 950SD into a 950SDX. Check out the QST review of the
> 950SDX for a list of the differences. 73 John AF5CC
> On Tue, Dec 12, 2017 at 4:58 PM, John <jluthy1 at verizon.net> wrote: > So
> how much more confusing can this get ?? > > > The radio for sale is a 950SD
> with all the filters and such, > > someone says that makes it a 950SDX > >
> and someone else says the 950SDX is far superior to a 950SD > > Sooo.. am I
> to infer that if I add a TCXO and more filters to my 950SD it > becomes a
> 950SDX?? > > > I always thought the 950SDX was different inside compared to
> a 950SD > > > can someone clear this up for me.. > > John > > N7JL > > > On
> 12/12/2017 02:31 PM, Steve London wrote: > >> And the TS-950SDX is a far
> superior radio. Too bad they called it a >> TS-950, after the bad
> reputation of the TS-950S and TS-950SD. >> >> I owned two SDX's for 10+
> years. >> >> 73, >> Steve, N2IC >> >> On 12/12/2017 02:39 PM, Fortra wrote:
> >> >>> Jeez, sorry for typo...It is an TS-950SDX and NOT TS-959DX... >>>
> Zero and nine are close ... >>> >>> Oh well, >>> >>> Nermin S58DX >>> >>>
> -----Izvorno sporočilo----- From: fortra at siol.net >>> Sent: Tuesday,
> December 12, 2017 9:50 PM >>> To: Frank Woelfle ; John Geiger >>> Cc:
> kenwood at mailman.qth.net ; ham4sale ; forsale-swap at mailman.qth.net >>>
> Subject: Re: [Kenwood] FS: Kenwood TS950SD dual receive HF radio >>> >>>
> Frank, >>> >>> for sake of clarification, given the description accurate,
> >>> this is an TS-959SDX not TS-950SD.. >>> >>> Have had both :) >>> >>>
> Nermin S58DX >>> >>> -----Izvorno sporočilo----- From: Frank Woelfle >>>
> Sent: Tuesday, December 12, 2017 7:42 PM >>> To: John Geiger >>> Cc:
> kenwood at mailman.qth.net ; ham4sale ; forsale-swap at mailman.qth.net >>>
> Subject: Re: [Kenwood] FS: Kenwood TS950SD dual receive HF radio >>> >>>
> John, I am 100percent interested in Radio as a matter of fact I will go >>>
> ahead and I'll take it if it is still available. I am at doctors office >>>
> right now so it will be a few hours before I can send you the details. >>>
> But >>> I will take it for sure. Been my dream radio for years. >>> >>> >>>
> On Dec 5, 2017 9:09 PM, "John Geiger" <af5cc2 at gmail.com> wrote: >>> >>> I
> have for sale a Kenwood TS950SD HF transceiver. Once Kenwood's top of >>>>
> the line radio. It is rated at 150 watts out (does a little more on >>>>
> most >>>> bands) and has 2 receivers for dual receive. It has a 500hz CW
> Filter >>>> and >>>> 1.8khz SSB filter at the 2nd IF, and a 500hz and 250hz
> CW filters and >>>> 2.4khz SSB filter at the 3rd IF, so all filter slots
> are full. It has a >>>> built in power supply, an autotuner that will match
> about anything, and >>>> a >>>> built in CW keyer. Many other receive
> functions like Slope Tuning for >>>> SSB >>>> and Variable Bandwidth Tuning
> (both AF and IF) for CW. Also comes with >>>> the >>>> DSP-10 DSP unit. I
> do not know if it has the TCXO in it, but I am >>>> guessing >>>> it
> probably does, given that it has the DSP unit and all of the filters >>>>
> that made it a D model. >>>> >>>> The rig is in excellent operating
> condition, and good physical condition >>>> with a few small circle marks
> on the top of the case where something >>>> else >>>> was setting on it.
> Also the fan cage on the rear of it has a dent in >>>> it, >>>> but the fan
> still works fine. It comes with a hand mic, AC power cord, >>>> and >>>>
> manual. I am asking $775 for it for an in person deal, or $850 shipped >>>>
> for >>>> it. >>>> >>>> I can do an in-person deal in the Oklahoma
> City/Southwest Oklahoma/North >>>> Texas area. >>>> >>>> I can take
> paypal/check/MO. >>>> >>>> 73 John AF5CC >>>> ______________________________
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