[GreenKeys] M28ASR Strange Loop issue...found?

Sun Dec 11 23:00:59 EST 2022

The warnings on oleic acid from...... DeoxiT
http://store.caig.com/s.nl/ctype.KB/it.I/id.732/KB.215/.f
There isn't any in it.

On Sun, Dec 11, 2022 at 8:35 PM <scottjohnson1 at cox.net> wrote:
>
> The active ingredient (their trade secret) is oleic acid, which will remove
> surface oxides, and tends to prevent their reforming.
> There are a lot of naysayers, but many of them miss this salient point.
>
> Scott W7SVJ
>
> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net>
> On Behalf Of Joe Duszynski
> Sent: Sunday, December 11, 2022 6:03 PM
> To: pdwills at cedarknolltelephone.com
> Cc: greenkeys at mailman.qth.net
> Subject: Re: [GreenKeys] M28ASR Strange Loop issue...found?
>
> Only problem it does not "deox" anything... "Lube-It" would be a better
> description.
>
>
> On Sun, Dec 11, 2022 at 7:03 PM Paul Wills <pdwills at cedarknolltelephone.com>
> wrote:
> >
> > The contact cleaner is the only substance I found that actually does
> > what it says on the container.  I'm impressed.
> >
> > I read about it on a Hickok tube tester restoration site.
> >
> > PDW
> >
> > On 12/11/2022 6:07 PM, John W9DDD wrote:
> > > For some strange reason I've never heard of DeoxiT.  To my surprise
> Microcenter shows about 30 products with a DeoxiT search.  I see a mini
> spray can or a 25ml liquid with needle dispenser that look interesting.  I
> wonder if the flux they have would be useful for some of the old wires that
> have gotten some corrosion.
> > >
> > > John, W9DDD
> > >
> > >
> > >> On Dec 11, 2022, at 4:24 PM, W2HX <w2hx at w2hx.com> wrote:
> > >>
> > >> One bit of good news. Nick and others had suggested that I spray some
> deoxit into the RJ jack and work it with a plug. I can now report that the
> RJ jack is now properly "normalling" when the plug is removed! I tried to
> work it without deoxit and it didn't work. The deoxit was the trick. Thanks
> Nick et., al. for the suggestion!
> > >>
> > >>
> > >> 73 Eugene W2HX
> > >> Subscribe to my Youtube Channel:
> > >> https://www.youtube.com/@w2hx/videos
> > >>
> > >>
> > >> -----Original Message-----
> > >> From: W2HX
> > >> Sent: Sunday, December 4, 2022 9:35 PM
> > >> To: Greenkeys <greenkeys at mailman.qth.net>
> > >> Subject: M28ASR Strange Loop issue...found?
> > >>
> > >> Ok everyone. I've got lots of updated information on my issue. To
> recap, this ASR has been running very well for the last 15 years. Recently
> the loop-driven LPR (sits on the keyboard contacts) recently stopped working
> in the way it has for all these years.  I've spent the last week and have
> poured dozens of hours into understanding how my ASR is set up. It was set
> up by Jack Hart (sk) who knew what he was doing. Only problem is I didn't
> know what he was doing hihi.
> > >>
> > >> Thanks to Nick, K4NYW who saved some of the materials from Jack, and
> thanks to me for never deleting emails, I was able to find some original
> correspondence with Jack dating back to July of 2005 when I first bought the
> machine from him. I studied the diagram for the WU 9797 LESU ad nauseum and
> learned a LOT.
> > >>
> > >> Here is how my electrical is configured.
> > >>
> > >> EXTERNAL LOOP (TRAFFIC) ---> KEYBOARD ---> TD ---> LPR (ON) --->
> > >> POLAR RELAY INTERNAL LOOP 1 (KEYED FROM POLAR RELAY) ---> PAGE
> > >> PRINTER INTERNAL LOOP 2 (NOT KEYED, ALWAYS MARKING) --> LPR (OFF)
> > >>
> > >> I have a DPDT switch mounted beneath the ASR that connects the LPR to
> one of two loops, either the internal loop (LPR OFF) and the external loop
> (LPR ON). In this way, when I don't want to punch tape from the external
> line, (OFF) it is connected to the internal loop and keeps the LPR in
> mark-hold (closed) at all times.
> > >>
> > >> The problem (previously described poorly) was that when the LPR was off
> (mark-holding, LOOP 1) it would run open. I spent days working on figuring
> this out. I found that when I plugged an ammeter into the RJ (reperf jack)
> it would close the circuit and work properly! This made no sense because
> these jacks should be normalling (shorting) when a plug is removed. But in
> this case, it seems to be open circuit.
> > >>
> > >> Ultimately, I must have damaged this jack when I was messing around
> learning about the electrical configuration which must have caused this
> problem. I wonder if anyone has any thoughts on this? I could attempt to
> pull the LESU open it up and repair it. And I probably should but seems like
> a bigger project than I'd like to take on at this moment. So I might just
> make a shorting plug to do the business.
> > >>
> > >> In case anyone is interested, here is a video I made on the whole set
> up and you can see the problem firsthand. And you can see how the problem
> resolves with an ammeter in the RJ jack.
> > >>
> > >> https://youtu.be/ULO6B07koDM
> > >>
> > >>
> > >> 73 Eugene W2HX
> > >> Subscribe to my Youtube Channel:
> > >> https://www.youtube.com/@w2hx/videos
> > >>
> > >>
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> > >>>> 1998-to-2001 greenkeys archive:
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> > >
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> >
> > >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> > >>> https://teletype.net/gksearch 2002-to-present greenkeys archive:
> > >>> http://mailman.qth.net/pipermail/greenkeys/
> > >>> 1998-to-2001 greenkeys archive:
> > >>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> > >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> > >>> http://comcents.com/tty/greenkeyssearch.html
> >
> > This list hosted by: http://www.qsl.net Please help support this email
> > list: http://www.qsl.net/donate.html Message delivered to
> > joeduszynski1 at gmail.com
> ______________________________________________________________
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>
> >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
> >>> https://teletype.net/gksearch 2002-to-present greenkeys archive:
> >>> http://mailman.qth.net/pipermail/greenkeys/
> >>> 1998-to-2001 greenkeys archive:
> >>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> >>> http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted by: http://www.qsl.net
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