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Need Info on the YK-88S2 IF Filter ? -for- Kenwood R-5000 Receiver

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RHF

unread,
May 10, 2008, 12:58:44 PM5/10/08
to
For One and All,

Need Info on the YK-88S2 IF Filter ? -for- Kenwood R-5000 Receiver
http://groups.yahoo.com/group/kenwood-r5000/message/2115

Also may Want-to-Buy [WTB] a YK-88S2 IF Filter -so-
Does Anyone Have a YK-88S2 IF Filter : For Sale ?

Background : There is another Kenwood IF Filter that
is design for one or more of the Kenwood Transcevers
that is Listed as a YK-88S2.

The YK-88S2 is a standard "Can" Solder-In type Filter
and -only- and needs to be mounted on the Dash-One (-1)
"Plug-In" Filter Circuit Boards used by Kenwood in some
of their Transcivers and the R-5000 Receiver.

The YK-88S2 Filter can be used by swapped-it-out with
an existing Filter that is mounted on the Circuit Board
of the Drop-In Filter for the Kenwood R-5000 Receiver.

IIRC - The YK-88S2 is designed to work on 8.83 MHz and
has the same size and circuit characteristis as the
other Filters designed for the Kenwood R-5000 Receiver.

Reference Link/URL for the YK-88S2 Filter
http://jg1xlv.jp-au.net/yk88s2.htm

My reading of the Numbers for the YK-88S2 Filter :
The -6 dB Bandwidth would be 3 kHz (2x1.5)
The -20 dB Bandwidth would be 3.8 kHz (2x1.9)
The -60 dB Bandwidth would be 5.5 kHz (2x2.75)
http://jg1xlv.jp-au.net/yk88s2-spec.htm

Now comparison this to the KY-88A-1 Filter
The -6 dB Bandwidth would be 6.0 kHz
The -20 dB Bandwidth would be ?.? kHz
The -60 dB Bandwidth would be 11 kHz

My Conclusion is that the Kenwood YK-88S2 (3.0 kHz)
would appear to be usable as a Very-Wide SSB IF Filter
-and/or- a Very-Narrow AM/MW IF Filter
http://jg1xlv.jp-au.net/yk88s2-spec.htm

The reason for this posting is -if- the Standard Solder-in
IF Filter Board Mounted of the Kenwood R-5000 Receiver
will take a Kenwood YK-88S2 IF Filter : It should -but-
has anyone had a problem ? ? ? ? ?

=IF= The Kenwood YK-88S2 IF Filter is a Drop-in-Fit
-then- I would like to configure a Kenwood R-5000
Receiver with the following Filters :
1st IF Filter = YK88-A1 - AM 6 kHz for Wide AM
2nd IF Filter = YK88S2 - AM 3 kHz for Narrow AM
3rd IF Filter = YK88S-1 - SSB 2.4 kHz for Very Narrow AM
This Receiver would be "Set-Up" specifically for Shortwave
Radio Broadcast Program Listening and not for Amateur
Radio SSB Reception.

Once Again - Two Questions :

# 1 - Has anyone any more information on the Kenwood
{ Trio } YK88S2 IF Filter ?

# 2 - Has anyone any used the Kenwood { Trio } YK88S2
IF Filter in any Rigs ?

some say - i would if i could . . .
-while- i simply say 'kenwood' ~ RHF
.
The Kenwood R-5000 Receiver Owners & User's Group
KENWOOD R-5000 RECEIVER => http://tinyurl.com/2o4z8k
Is your place on the WEB to use as a "Resource" for
General and Technical Information about the Kenwood
R-5000 Receiver and to Identifying Common Problems
and Simple Practical Solutions. http://tinyurl.com/2o4z8k
KWR5K => http://groups.yahoo.com/group/kenwood-r5000/
Shortwave Radio Listening Antennas "The Other" 55.5% of SWLing
SWL ANTENNA => http://tinyurl.com/ogvcf
- = 2O4Z8K = -
.

Homer J

unread,
May 11, 2008, 8:24:20 AM5/11/08
to
I found Kenwood filters for my old TS-440S at International Radio 13620 Tyee
Road Umpqua OR for a reasonable price. I tried the more conventional sources
such PartsStore.com but even though they listed the filters they were
discontinued.

The old radios from the late 80s through the mid-90s are hard to get parts
for sometimes.

The only draw back to ones from International were they were not direct
replacement, they were mounted pn a circuit board mounted to my IF board
with some double sticky foam tape. The orignal filters were hard to find
without buying them off eBay as a used item for a premium price.

Good luck, the filter do make a big difference, my Kenwood is used as a
beater radio for our club Field Day and other outdoor events. The operators
last year raved at how clear the SSB signals were over the previous FD.

73,

Homer


"RHF" <rhf-new...@pacbell.net> wrote in message
news:5bf0dfb4-424a-4eba...@k1g2000prb.googlegroups.com...

RHF

unread,
May 11, 2008, 12:18:22 PM5/11/08
to
On May 11, 5:24 am, "Homer J" <hom...@home.com> wrote:
> I found Kenwood filters for my old TS-440S at International Radio 13620 Tyee
> Road Umpqua OR for a reasonable price. I tried the more conventional sources
> such PartsStore.com but even though they listed the filters they were
> discontinued.
>
> The old radios from the late 80s through the mid-90s are hard to get parts
> for sometimes.
>
> The only draw back to ones from International were they were not direct
> replacement, they were mounted pn a circuit board mounted to my IF board
> with some double sticky foam tape. The orignal filters were hard to find
> without buying them off eBay as a used item for a premium price.
>
> Good luck, the filter do make a big difference, my Kenwood is used as a
> beater radio for our club Field Day and other outdoor events. The operators
> last year raved at how clear the SSB signals were over the previous FD.
>
> 73,
>
> Homer

Homer J. - By ? beater radio ? You mean everyone Key-up
and Zero-Beat to it as a common FD Reference. ~ RHF
.

> "RHF" <rhf-newsgro...@pacbell.net> wrote in message

> > and Simple Practical Solutions.http://tinyurl.com/2o4z8k


> > KWR5K =>http://groups.yahoo.com/group/kenwood-r5000/
> > Shortwave Radio Listening Antennas "The Other" 55.5% of SWLing
> > SWL ANTENNA =>http://tinyurl.com/ogvcf
> > - = 2O4Z8K = -

> > .- Hide quoted text -
>
> - Show quoted text -

Telamon

unread,
May 11, 2008, 2:58:12 PM5/11/08
to
In article
<898bb00b-0844-4035...@q24g2000prf.googlegroups.com>,
RHF <rhf-new...@pacbell.net> wrote:

> On May 11, 5:24 am, "Homer J" <hom...@home.com> wrote:
> > I found Kenwood filters for my old TS-440S at International Radio 13620 Tyee
> > Road Umpqua OR for a reasonable price. I tried the more conventional sources
> > such PartsStore.com but even though they listed the filters they were
> > discontinued.
> >
> > The old radios from the late 80s through the mid-90s are hard to get parts
> > for sometimes.
> >
> > The only draw back to ones from International were they were not direct
> > replacement, they were mounted pn a circuit board mounted to my IF board
> > with some double sticky foam tape. The orignal filters were hard to find
> > without buying them off eBay as a used item for a premium price.
> >
> > Good luck, the filter do make a big difference, my Kenwood is used as a
> > beater radio for our club Field Day and other outdoor events. The operators
> > last year raved at how clear the SSB signals were over the previous FD.
> >
> > 73,
> >
> > Homer
>
> Homer J. - By ? beater radio ? You mean everyone Key-up
> and Zero-Beat to it as a common FD Reference. ~ RHF

If I was you RHF I would stick to the off topic political nonsense
threads. You can't go wrong there.

--
Telamon
Ventura, California

cuh...@webtv.net

unread,
May 11, 2008, 3:48:22 PM5/11/08
to
Indiana Jones movie on the USA Radio tb channel right now.
Ba ba ba baaaaaaaa,,,,,,

I bet Harrison Ford never lived in Indiana before.
I did, in Martinsville,Indiana the year of 1947.I am Much more an
''Indiana Jones'' than that Cump is!
cuhulin, Indiana

cuh...@webtv.net

unread,
May 11, 2008, 3:51:26 PM5/11/08
to
But,,, but,, but,,, Telamon still refuses to tel them purrrty girls over
there auld Hansom Larry (that's me) Loves them.
cuhulin

RHF

unread,
May 11, 2008, 4:24:28 PM5/11/08
to
On May 11, 11:58 am, Telamon
<telamon_spamshi...@pacbell.net.is.invalid> wrote:
> In article
> <898bb00b-0844-4035-ab71-374524965...@q24g2000prf.googlegroups.com>,

>
>
>
>
>
>  RHF <rhf-newsgro...@pacbell.net> wrote:
> > On May 11, 5:24 am, "Homer J" <hom...@home.com> wrote:
> > > I found Kenwood filters for my old TS-440S at International Radio 13620 Tyee
> > > Road Umpqua OR for a reasonable price. I tried the more conventional sources
> > > such PartsStore.com but even though they listed the filters they were
> > > discontinued.
>
> > > The old radios from the late 80s through the mid-90s are hard to get parts
> > > for sometimes.
>
> > > The only draw back to ones from International were they were not direct
> > > replacement, they were mounted pn a circuit board mounted to my IF board
> > > with some double sticky foam tape. The orignal filters were hard to find
> > > without buying them off eBay as a used item for a premium price.
>
> > > Good luck, the filter do make a big difference, my Kenwood is used as a
> > > beater radio for our club Field Day and other outdoor events. The operators
> > > last year raved at how clear the SSB signals were over the previous FD.
>
> > > 73,
>
> > > Homer
>
> > Homer J. - By ? beater radio ? You mean everyone Key-up
> > and Zero-Beat to it as a common FD Reference. ~ RHF

- If I was you RHF I would stick to the off topic political
- nonsense threads. You can't go wrong there.
-
- --
- Telamon
- Ventura, California
-

Telamon - I knew that I could count on you; and I am always
greatful for all your positive remarks and helpful information. ~ RHF
.

Radioguy

unread,
May 12, 2008, 11:44:58 AM5/12/08
to
On May 10, 12:58 pm, RHF <rhf-newsgro...@pacbell.net> wrote:
> For One and All,
>
> Need Info on the YK-88S2 IF Filter ? -for- Kenwood R-5000 Receiverhttp://groups.yahoo.com/group/kenwood-r5000/message/2115

>
> Also may Want-to-Buy [WTB] a YK-88S2 IF Filter -so-
> Does Anyone Have a YK-88S2 IF Filter : For Sale ?
>
> Background : There is another Kenwood IF Filter that
> is design for one or more of the Kenwood Transcevers
> that is Listed as a YK-88S2.
>
> The YK-88S2 is a standard "Can" Solder-In type Filter
> and -only- and needs to be mounted on the Dash-One (-1)
> "Plug-In" Filter Circuit Boards used by Kenwood in some
> of their Transcivers and the R-5000 Receiver.
>
> The YK-88S2 Filter can be used by swapped-it-out with
> an existing Filter that is mounted on the Circuit Board
> of the Drop-In Filter for the Kenwood R-5000 Receiver.
>
> IIRC - The YK-88S2 is designed to work on 8.83 MHz and
> has the same size and circuit characteristis as the
> other Filters designed for the Kenwood R-5000 Receiver.
>
> Reference Link/URL for the YK-88S2 Filterhttp://jg1xlv.jp-au.net/yk88s2.htm

>
> My reading of the Numbers for the YK-88S2 Filter :
> The -6 dB Bandwidth would be 3 kHz (2x1.5)
> The -20 dB Bandwidth would be 3.8 kHz (2x1.9)
> The -60 dB Bandwidth would be 5.5 kHz (2x2.75)http://jg1xlv.jp-au.net/yk88s2-spec.htm

>
> Now comparison this to the KY-88A-1 Filter
> The -6 dB Bandwidth would be 6.0 kHz
> The -20 dB Bandwidth would be ?.? kHz
> The -60 dB Bandwidth would be 11 kHz
>
> My Conclusion is that the Kenwood YK-88S2 (3.0 kHz)
> would appear to be usable as a Very-Wide SSB IF Filter
> -and/or- a Very-Narrow AM/MW IF Filterhttp://jg1xlv.jp-au.net/yk88s2-spec.htm
> and Simple Practical Solutions.http://tinyurl.com/2o4z8k

> KWR5K =>http://groups.yahoo.com/group/kenwood-r5000/
> Shortwave Radio Listening Antennas "The Other" 55.5% of SWLing
> SWL ANTENNA =>http://tinyurl.com/ogvcf
> - = 2O4Z8K = -
>  .

The R-5000 has four filter slots with designated R5000 filters giving
6khz (YK88a optional), 4khz (YK88S), 1.8khz (YK88SN optional) and CW
(two filters available).

YK88S2 might make sense in filter position 2 if it fits and if a
really narrow AM filter was needed. YK88S1 would appear to largely
duplicate the YK88SN filter and I doubt any noticable benefit would be
gained in that swap.

I've got the full complement of optional R5000 filters and find them
to be a good mix of widths. Nice to see that something else is
available though.

RHF

unread,
May 12, 2008, 2:23:25 PM5/12/08
to

? 4khz (YK88S) ? -isn't- the YK-88S a 2.4 kHz ?

> YK88S2 might make sense in filter position 2 if it fits and if a
> really narrow AM filter was needed.  YK88S1 would appear to largely
> duplicate the YK88SN filter and I doubt any noticable benefit would be
> gained in that swap.
>
> I've got the full complement of optional R5000 filters and find them
> to be a good mix of widths.  Nice to see that something else is

> available though.- Hide quoted text -


>
> - Show quoted text -

YK-88 = 10~12 kHz 'Stock' AM IF Filter - Plug-In

YK-88A-1 = 6 kHz "Optional" AM Filter - Plug-In
YK-88A = 6 kHz "Optional" AM Filter - Solder-In

YK-88S2 = 3.0 kHz SSB Wide / Narrow AM Filter - Solder-In

YK-88S = 2.4 kHz 'Stock' SSB Wide Filter - Solder-In
http://cgi.ebay.com/_W0QQitemZ300223545767

YK-88SN = 1.8 kHz SSB Narrow Filter - Solder-In
http://cgi.ebay.com/_W0QQitemZ350058257432

YK-88C = 500 Hz CW Filter - Solder-In
http://cgi.ebay.com/_W0QQitemZ380026934667

YK-88CN = 270 Hz CW Narrow Filter
http://cgi.ebay.com/_W0QQitemZ150245691934

Radioguy

unread,
May 12, 2008, 4:48:04 PM5/12/08
to
> YK-88S = 2.4 kHz 'Stock' SSB Wide Filter - Solder-Inhttp://cgi.ebay.com/_W0QQitemZ300223545767
>
> YK-88SN = 1.8 kHz SSB Narrow Filter - Solder-Inhttp://cgi.ebay.com/_W0QQitemZ350058257432
>
> YK-88C = 500 Hz CW Filter - Solder-Inhttp://cgi.ebay.com/_W0QQitemZ380026934667

>
> YK-88CN = 270 Hz CW Narrow Filterhttp://cgi.ebay.com/_W0QQitemZ150245691934

Yes, you are right...meant to type 2.4 but only the 4 got transferred
to screen.

Fred McKenzie

unread,
May 17, 2008, 3:00:05 PM5/17/08
to
In article
<ff4d0a27-e94b-4654...@k10g2000prm.googlegroups.com>,
RHF <rhf-new...@pacbell.net> wrote:

> YK-88A-1 = 6 kHz "Optional" AM Filter - Plug-In
> YK-88A = 6 kHz "Optional" AM Filter - Solder-In

My old TS430 had the solder-in filters. The newer TS-690 (450) has
plug-in filters. I understood that the only difference between older
and newer YK-88 series filters was the circuit board, denoted by the -1
suffix.

So, if you need a solder-in YK-88SN for example, you should be able to
unsolder the filter from the YK-88SN-1 circuit board and use that. Are
there some matching components on the circuit board that I missed?

Fred
K4DII

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