[Kenwood] L37 TS-850 IF Board

[Robert F]

Hi there OM:

 

The value of L37 is one microHenry (uH) on the TS-850 IF Board. Kenwood part # L40-1092-13. There should be some generic ones in the market if you can not find an original part........73s ...Bob KG4EQL

 
> From: kenwood-request at mailman.qth.net
> Subject: Kenwood Digest, Vol 69, Issue 4
> To: kenwood at mailman.qth.net
> Date: Wed, 6 Jan 2010 12:00:31 -0500
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> Today's Topics:
> 
> 1. need part number for L37 in TS-850S IF BOARD (Fern)
> 2. TS-430S AM RCV (Idle-Tyme)
> 3. Re: TS-430S AM RCV (Rob Stampfli)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Tue, 5 Jan 2010 13:42:16 -0700
> From: "Fern" <crc at cyberlink.bc.ca>
> Subject: [Kenwood] need part number for L37 in TS-850S IF BOARD
> To: "Kenwood List" <kenwood at mailman.qth.net>
> Message-ID: <001b01ca8e47$934a6930$6400a8c0 at your03667082de>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Need the part number of L37 that's located on the IF board X48/3080/00 in the TS-850S so that we can order a correct replacement for that choke.
> Thanks from Fern VE7GZ
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Tue, 05 Jan 2010 22:53:55 -0600
> From: Idle-Tyme <nss at mwt.net>
> Subject: [Kenwood] TS-430S AM RCV
> To: kenwood at mailman.qth.net
> Message-ID: <4B441763.2080301 at mwt.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Ok, another weird quirk this rig has,
> 
> We all know the bad dirty contacts thing with the bandpass filters and 
> all that. Like this rig when you go from 3.999.99 all is well and 
> strong, but cross to the 4.0 to the 6.5 window you hear the relay click 
> in and the receiver is dead. I haven't bothered cleaning it because all 
> that I'm missing in that gap is a few broadcast bands so not a big 
> deal. BUT
> 
> I also listen to AM broadcast band lot and noticed there is a positive 
> deafening of the AM band. when I'm 500Kc and up it hears and all don't 
> get me wrong, but as you tube below 500Kc the receiver suddenly jumps to 
> life with much stronger signals and noise floor and all is greatly 
> stronger But no relays click, so I'm thinking some software attenuator 
> to help block strong broadcast band sigs?
> 
> Can this be removed? I don't have any near me. the closest AM station 
> is 10 miles away and is only a local station with qrp power.
> 
> Anyone?
> Joe WB9SBD
> -- 
> *************
> Idle-Tyme Visit Our Web Page To Learn All About This Incredible Timepiece!
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> 
> ------------------------------
> 
> Message: 3
> Date: Wed, 6 Jan 2010 00:12:04 -0500
> From: Rob Stampfli <kenwood at colnet.cboh.org>
> Subject: Re: [Kenwood] TS-430S AM RCV
> To: kenwood at mailman.qth.net
> Message-ID: <20100106051204.GA19646 at keevey>
> Content-Type: text/plain; charset=us-ascii
> 
> On Tue, Jan 05, 2010 at 10:53:55PM -0600, Idle-Tyme wrote:
> > Ok, another weird quirk this rig has,
> > 
> > We all know the bad dirty contacts thing with the bandpass filters and 
> > all that. Like this rig when you go from 3.999.99 all is well and 
> > strong, but cross to the 4.0 to the 6.5 window you hear the relay click 
> > in and the receiver is dead. I haven't bothered cleaning it because all 
> > that I'm missing in that gap is a few broadcast bands so not a big 
> > deal. BUT
> > 
> > I also listen to AM broadcast band lot and noticed there is a positive 
> > deafening of the AM band. when I'm 500Kc and up it hears and all don't 
> > get me wrong, but as you tube below 500Kc the receiver suddenly jumps to 
> > life with much stronger signals and noise floor and all is greatly 
> > stronger But no relays click, so I'm thinking some software attenuator 
> > to help block strong broadcast band sigs?
> > 
> > Can this be removed? I don't have any near me. the closest AM station 
> > is 10 miles away and is only a local station with qrp power.
> 
> I can't say I've observed this problem in my 430, but I understand
> there was some purposeful attenuation added to the broadcast band
> for whatever reason. (To prevent overload? To prevent birdies?)
> You might be interested in the following URL if you feel this is a
> problem for you:
> 
> http://home.computer.net/~pritch/ts-430.htm
> 
> You'll probably be most interested in the 2nd paragraph from the
> end of the article. To reiterate, I have not performed this mod,
> and I am not making a recommendations in any event.
> 
> YMMV,
> Rob
> 
> 
> ------------------------------
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> End of Kenwood Digest, Vol 69, Issue 4
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