From wb0gaz at yahoo.com  Sun Dec  2 10:12:37 2018
From: wb0gaz at yahoo.com (David Feldman)
Date: Sun, 2 Dec 2018 15:12:37 +0000 (UTC)
Subject: [Kenwood] TS-940S: AF Tune control operation unstable (oscillation
 at some points) - advice?
References: <1892205202.410249.1543763557700.ref@mail.yahoo.com>
Message-ID: <1892205202.410249.1543763557700@mail.yahoo.com>

Have TS-940 S/N 7M range. In CW mode, with AF Tune button active, adjusting the AF Tune control results in some apparent oscillation or similar instability. There is a tunable gain/level peak (I think normal operation; I'd not ever tried that control before on a TS-940), however, rotating the control across the range also produces unstable, sharp (and fairly loud) audio tone artifacts at some points.

Advice request - does this sound familiar to anyone? I'll have to open it up anyway for another issue (the backup battery is also now dead), but would like avoid reinventing the troubleshooting wheel if this is otherwise a known type of issue.

Thanks,

Dave
wb0gaz at yahoo.com

From k3ac at aol.com  Mon Dec  3 00:52:35 2018
From: k3ac at aol.com (k3ac at aol.com)
Date: Mon, 3 Dec 2018 05:52:35 +0000 (UTC)
Subject: [Kenwood] TS-940S: AF Tune control operation unstable
 (oscillation at some points) - advice?
References: <233722131.686464.1543816355791.ref@mail.yahoo.com>
Message-ID: <233722131.686464.1543816355791@mail.yahoo.com>

Dave - well, the AF Tune pot on the 940 is not used very often (at least I don't recall using it much when I had my 940 on CW)? so I suspect (at least an initial step) that it may have developed some corrosion internally. Are you able to get to it at all without removing front panel? If so, might be worth shooting a little Caig FaderLube (not DeOxit) inside and working the control to see if that improves the instablity/oscillation. Getting to the opening of the case under the solder terminals can be difficult but you may be able to get a thin straw-like applicator close enough to get some of the lube inside.
Bob, K3AC
In a message dated 12/2/2018 10:35:40 PM Eastern Standard Time, kenwood at mailman.qth.net writes:

Have TS-940 S/N 7M range. In CW mode, with AF Tune button active, adjusting the AF Tune control results in some apparent oscillation or similar instability. There is a tunable gain/level peak (I think normal operation; I'd not ever tried that control before on a TS-940), however, rotating the control across the range also produces unstable, sharp (and fairly loud) audio tone artifacts at some points.
Advice request - does this sound familiar to anyone? I'll have to open it up anyway for another issue (the backup battery is also now dead), but would like avoid reinventing the troubleshooting wheel if this is otherwise a known type of issue.
Thanks,
Davewb0gaz at yahoo.com______________________________________________________________Kenwood mailing listHome: http://mailman.qth.net/mailman/listinfo/kenwoodHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Kenwood at mailman.qth.net
This list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to k3ac at aol.com

From wb0gaz at yahoo.com  Mon Dec  3 07:13:14 2018
From: wb0gaz at yahoo.com (David Feldman)
Date: Mon, 3 Dec 2018 12:13:14 +0000 (UTC)
Subject: [Kenwood] TS-940S: AF Tune control operation unstable
 (oscillation at some points) - advice?
References: <696790842.791386.1543839194661.ref@mail.yahoo.com>
Message-ID: <696790842.791386.1543839194661@mail.yahoo.com>

As it turns out, that WAS the problem! 

The original owner since new was a phone op, I never used it before, and after rotating the control through range about 20 times, the problem disappeared.

Thanks!

Dave

--------------------------------------------
On Sun, 12/2/18,  <k3ac at aol.com> wrote:

 Subject: Re: [Kenwood] TS-940S: AF Tune control operation unstable (oscillation at some points) - advice?
 To: wb0gaz at yahoo.com, kenwood at mailman.qth.net
 Date: Sunday, December 2, 2018, 10:52 PM
 
 
 
 Dave - well, the
 AF Tune pot on the 940 is not used very often (at least I
 don't recall using it much when I had my 940 on
 CW)? so I suspect (at least an initial step) that it
 may have developed some corrosion internally. Are you able
 to get to it at all without removing front panel? If so,
 might be worth shooting a little Caig FaderLube (not DeOxit)
 inside and working the control to see if that improves the
 instablity/oscillation. Getting to the opening of the case
 under the solder terminals can be difficult but you may be
 able to get a thin straw-like applicator close enough to get
 some of the lube inside.
 
 
 Bob,
 K3AC
 
 
 
 In a message dated 12/2/2018 10:35:40 PM Eastern Standard
 Time, kenwood at mailman.qth.net writes:
 
 
 
 
 Have TS-940 S/N 7M range. In CW mode, with AF
 Tune button active, adjusting the AF Tune control results in
 some apparent oscillation or similar instability. There is a
 tunable gain/level peak (I think normal operation; I'd
 not ever tried that control before on a TS-940), however,
 rotating the control across the range also produces
 unstable, sharp (and fairly loud) audio tone artifacts at
 some points.
 
 
 Advice request - does this sound familiar to
 anyone? I'll have to open it up anyway for another issue
 (the backup battery is also now dead), but would like avoid
 reinventing the troubleshooting wheel if this is otherwise a
 known type of issue.
 
 
 Thanks,
 
 
 Dave
 wb0gaz at yahoo.com
 ______________________________________________________________
 Kenwood mailing list
 Home: http://mailman.qth.net/mailman/listinfo/kenwood
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Kenwood at mailman.qth.net
 
 
 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to k3ac at aol.com
 
 
 

From k3ac at aol.com  Mon Dec  3 09:18:00 2018
From: k3ac at aol.com (k3ac at aol.com)
Date: Mon, 3 Dec 2018 14:18:00 +0000 (UTC)
Subject: [Kenwood] TS-940S: AF Tune control operation unstable
 (oscillation at some points) - advice?
References: <68140788.841288.1543846680567.ref@mail.yahoo.com>
Message-ID: <68140788.841288.1543846680567@mail.yahoo.com>

OK Dave - Great!? It's always nice when a problem is easily resolved like that. I AM a CW operator and the 940 filtering is so good using the VBT, etc, that I rarely used the AF TUNE (so had a feeling it was a corrosion issue).


enjoy/73,Bob, K3ACIn a message dated 12/3/2018 7:13:17 AM Eastern Standard Time, wb0gaz at yahoo.com writes:
As it turns out, that WAS the problem! 
The original owner since new was a phone op, I never used it before, and after rotating the control through range about 20 times, the problem disappeared.
Thanks!
Dave
--------------------------------------------On Sun, 12/2/18,? <k3ac at aol.com> wrote:
Subject: Re: [Kenwood] TS-940S: AF Tune control operation unstable (oscillation at some points) - advice?To: wb0gaz at yahoo.com, kenwood at mailman.qth.netDate: Sunday, December 2, 2018, 10:52 PM


Dave - well, theAF Tune pot on the 940 is not used very often (at least Idon't recall using it much when I had my 940 onCW)? so I suspect (at least an initial step) that itmay have developed some corrosion internally. Are you ableto get to it at all without removing front panel? If so,might be worth shooting a little Caig FaderLube (not DeOxit)inside and working the control to see if that improves theinstablity/oscillation. Getting to the opening of the caseunder the solder terminals can be difficult but you may beable to get a thin straw-like applicator close enough to getsome of the lube inside.

Bob,K3AC


In a message dated 12/2/2018 10:35:40 PM Eastern StandardTime, kenwood at mailman.qth.net writes:



Have TS-940 S/N 7M range. In CW mode, with AFTune button active, adjusting the AF Tune control results insome apparent oscillation or similar instability. There is atunable gain/level peak (I think normal operation; I'dnot ever tried that control before on a TS-940), however,rotating the control across the range also producesunstable, sharp (and fairly loud) audio tone artifacts atsome points.

Advice request - does this sound familiar toanyone? I'll have to open it up anyway for another issue(the backup battery is also now dead), but would like avoidreinventing the troubleshooting wheel if this is otherwise aknown type of issue.

Thanks,

Davewb0gaz at yahoo.com______________________________________________________________Kenwood mailing listHome: http://mailman.qth.net/mailman/listinfo/kenwoodHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:Kenwood at mailman.qth.net

This list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to k3ac at aol.com



From wb0gaz at yahoo.com  Thu Dec  6 11:14:37 2018
From: wb0gaz at yahoo.com (David Feldman)
Date: Thu, 6 Dec 2018 16:14:37 +0000 (UTC)
Subject: [Kenwood] Connecting to first IF (45.05 MHz) in TS-940S -
	recommendations?
References: <1291381223.2854578.1544112877811.ref@mail.yahoo.com>
Message-ID: <1291381223.2854578.1544112877811@mail.yahoo.com>

I am having a good time slaving a low-cost RTL-SDR to the second IF output of my TS-940S (currently using sdr-radio console software and an upconverter kit to map 8.83 MHz to 28.83 MHz so that RTL-SDR can receive).

I'd like to connect to the 45.05 MHz first IF rather than the 8.83 MHz second IF, as this would eliminate the need for an upconverter between the TS-940 IF output and the RTL-SDR input.

I have done some searching (there are many topics posted around the web addressing aspects of TS-940S), but I've not seen any postings that clearly describe how/where to attach to the first IF signal path.

Any pointers or recommendations (or cautions that I shouldn't try this)?

Thanks very much,

73 Dave WB0GAZ wb0gaz at yahoo.com

From kenw8ek at gmail.com  Sun Dec  9 08:01:24 2018
From: kenw8ek at gmail.com (Ken, W8EK)
Date: Sun, 9 Dec 2018 08:01:24 -0500
Subject: [Kenwood] TM-241 buttons needed
Message-ID: <6a3936ba-645d-6dad-4232-8b328e415fc6@gmail.com>


I have a Kenwood TM-241 Two Meter FM Transceiver that works 100%.  It 
came from a silent key.  Cosmetically, it really looks great, except 
for one detail.  It is missing some of the buttons along the bottom of 
the LCD display.  These are the buttons that are labeled (from L to R) 
Call, Function, Shift, Tone, Rev, DR/DT.

The Call and the Tone buttons are there, but the other 4 are missing. 
I have no idea what happened to these, as the rig looks great.  The 
underlying switches work fine, and I have fashioned a Popsicle stick 
to act as a stylus for them, but the actual buttons would be much better!

In any case, I am wondering if anyone might have these buttons 
available.  Maybe from a parts rig that still has the buttons.

Any help would be be much appreciated.

Thanks.

73,

Ken, W8EK

Ken Simpson
E-mail to W8EK at FLHam.net or W8EK at arrl.net
Voice Phone  (352) 732-8400





.


From af5cc2 at gmail.com  Fri Dec 14 14:18:04 2018
From: af5cc2 at gmail.com (John Geiger)
Date: Fri, 14 Dec 2018 13:18:04 -0600
Subject: [Kenwood] TS850/TS950 and TS450 autotuner question
Message-ID: <CAHC1P2_LUCj+pK9_9UzjksCKb7JbbowYtS-bjOQaE319DH=DMA@mail.gmail.com>

I believe the TS850, TS950 and TS450 use pretty much the same autotuner, so
hopefully this question will cover both.  The manual says that the
autotuner will store settings for each band, so in practice, if I was to
switch between the FT8 frequencies on each band remotely, the autotuner
will quickly set itself for that band and have a low SWR, correct?

Or do you need to push the tune button each time you change bands to really
make the tuner work?

Also, what CAT programs are good for computer control of the TS850, TS950
and TS450?

73 John AF5CC

From k3ac at aol.com  Fri Dec 21 15:43:30 2018
From: k3ac at aol.com (k3ac at aol.com)
Date: Fri, 21 Dec 2018 20:43:30 +0000 (UTC)
Subject: [Kenwood] Kenwood amateur service center info request
References: <1528381436.1411523.1545425010993.ref@mail.yahoo.com>
Message-ID: <1528381436.1411523.1545425010993@mail.yahoo.com>

To all:

I am in need of repair service to my Kenwood amateur radio. In the past, I had sent radios to the Kenwood East Coast Service Center in Virginia Beach, VA, but looks like they have gone out of business (phone is disconnected).? Only service center I can find online is in CA. Does any one know of the current service center for Kenwood?? I tried calling some numbers I found online but no one answers phone and I don't want to ship a radio across country without knowing what their procedure is and where my closest service center is. I'd hate to ship a radio to Calif. only to find out there's an East Coast service center.

Thanks,Bob, K3AC

From k3ac at aol.com  Fri Dec 21 18:49:13 2018
From: k3ac at aol.com (k3ac at aol.com)
Date: Fri, 21 Dec 2018 23:49:13 +0000 (UTC)
Subject: [Kenwood] Kenwood service request - correction
References: <1958170152.1483461.1545436153277.ref@mail.yahoo.com>
Message-ID: <1958170152.1483461.1545436153277@mail.yahoo.com>

Hi - thanks to all who recommended Clif (Avid) and other private repair techs working on Kenwood amateur radios. Unfortunately, I need IN-WARRANTY service for a newer Kenwood radio purchased within the last few months. Kenwood used to have a factory authorized service center in Virginia Beach, VA (Kenwood Service Center East). I learned from one of the large mail order ham retailers that this facility has closed permanently. This leaves ONLY the Kenwood Service Center in Long Beach, CA doing in-warranty service.? Sorry for the confusion and thanks for all who replied.?

73,Bob, k3AC

From k3ac at aol.com  Sat Dec 22 13:06:13 2018
From: k3ac at aol.com (k3ac at aol.com)
Date: Sat, 22 Dec 2018 18:06:13 +0000 (UTC)
Subject: [Kenwood] Kenwood service request - correction
References: <151945155.1675690.1545501973927.ref@mail.yahoo.com>
Message-ID: <151945155.1675690.1545501973927@mail.yahoo.com>

Correction to my previous post:
Kenwood Service West (for amateur radio service, in- and out of warranty) is no longer located in Long Beach, CA. They are evidently now using an independent contractor called FTH Group, based in City of Industry, CA? (that's an area just east of LA).

The current address is listed on the Kenwood website (under amateur radio repair service):
FTH Group
 Kenwood Authorized Service Center Pacific 20801 Currier RoadCity of Industry, CA 91789
(there is a website that allows you to enter all pertinent service request information and generate a RMA (return authorization) number. Make sure to get an? RMA No. before shipping any gear back for service.
Thanks to all who responded to my request for Kenwood in-warranty repair info.

Bob, K3AC


From: k3ac at aol.com
To: kenwood at mailman.qth.net
Sent: 12/21/2018 6:49:13 PM Eastern Standard Time
Subject: Re: Kenwood service request - correction

Hi - thanks to all who recommended Clif (Avid) and other private repair techs working on Kenwood amateur radios. Unfortunately, I need IN-WARRANTY service for a newer Kenwood radio purchased within the last few months. Kenwood used to have a factory authorized service center in Virginia Beach, VA (Kenwood Service Center East). I learned from one of the large mail order ham retailers that this facility has closed permanently. This leaves ONLY the Kenwood Service Center in Long Beach, CA doing in-warranty service.? Sorry for the confusion and thanks for all who replied.?

73,Bob, k3AC