[R-1051] R-1051's FS

Cecil Acuff chacuff at cableone.net
Sun Dec 1 21:29:58 EST 2002 

Greetings Keith and Group,

        The tuning system in the 1051 uses open seeking servo circuits.
When you select a new Mhz position on the front panel you change the "Code"
which consists of selectively grounding the various lines out of the Code
Generator in a binary fashion.  The turret and Mhz crystal switch spin
seeking an open which will stop them at the correct position.  A common
problem is a ground showing up on one of the lines that creates an invalid
code in some positions.  It also creates a valid code in other positions
that results in the turret stopping, but on the wrong band segment.  There
is a design problem on some of the early code generators where a trace on
one of the circuit boards in the stack is too close to the metal spacers
causing a short on that line and an invalid code.  Your problem does not
appear to be related to that....

I would pull the cover from the RF deck and visually check the centering of
the finger contact on the Mhz strip in the fixed contacts.  It should well
into the finger in all positions.  Yours may be stopping on the edge in each
position causing some bands to not work properly...in which case an
adjustment on the bottom side as Tony has outlined should help.  The more
likely cause is gunk or trash of some sort on the position ring on the
bottom side of the RF deck causing an intermittent  false open to
occur...satisfying the open seeking circuit but positioning the turret in
the wrong place.  Sounds like if you spin it again it sometimes arrives in
position as it should.  Cleaning with contact cleaner and deoxit should
help.  A warning though be very careful with the spring fingers.  They are
very easily damaged or bent causing more serious problems.  Don't stick a
Q-tip in there...you will snag one of them for sure!

Most every RF deck I have had through the shop benefited from a disassembly
and cleaning.  There are close to 400 contacts in the thing and usually the
switches driven by the 100 Kc and 10 Kc knobs are noisy and intermittent.
Takes a couple hours to do it right!

Cecil Acuff

The R1051 Shop

www.r1051.com

----- Original Message -----
From: Tony Snider <trsnider at mindspring.com>
To: Keith Densmore <densmore at idirect.com>
Cc: <r-1051 at mailman.qth.net>
Sent: Sunday, December 01, 2002 7:14 PM
Subject: Re: [R-1051] R-1051's FS


> Ok I'm up to speed now, if you look at the bottom of the turret you will
see
> a couple sets of finger contacts through slots, these are the ones that
make
> the turret stop in the correct spot, they frequently get dirty and cause
> that problem or the thing just spins forever, some of the deoxit (best
> contact cleaner in the world) into the slots and if you rock the 1 mc knob
> back and forth and keep the turret moving to work the stuff into the whole
> ring will usually solve the problem, also there is an adjustment for the
> stop points, it is made by moving the finger contacts back or ahead in the
> track on the bottom of the turret. this adjustment will only do anything
if
> the unit stops ahead or behind on EVERY band, if like you say it works on
> some and not on others it is certainly the contacts.  the selector decks
> (code generator) on the back of the 10 and 1 mc knob are a second place to
> look and hit with the deoxit!!
> Tony
> ----- Original Message -----
> From: "Keith Densmore" <densmore at idirect.com>
> To: "Tony Snider" <trsnider at mindspring.com>
> Sent: Sunday, December 01, 2002 1:31 PM
> Subject: Re: [R-1051] R-1051's FS
>
>
> > Hi Tony,
> > It's been awhile since I fiddled with it, so my memory is probably a bit
> > hazy. One of the five lines either is always at ground or never at
ground.
> > Result is it will tune to some MCS positions but stop short on others. I
> > 'fixed' the problem by putting in a toggle switch which either lifts or
> > makes the ground, which starts the turret again and it always will go to
> the
> > right band by doing this. Hope this helps.
> > Thanks,
> > Keith
> >
> >
> > ----- Original Message -----
> > From: "Tony Snider" <trsnider at mindspring.com>
> > To: "Keith Densmore" <densmore at idirect.com>
> > Sent: Sunday, December 01, 2002 12:12 PM
> > Subject: Re: [R-1051] R-1051's FS
> >
> >
> > > Keith,
> > > wont cost you anything for me to look at it, I assume when you say
> switch
> > > you mean one of the turret slices is not making contact, so it would
be
> > dead
> > > on 1 band?? is that correct??
> > > ----- Original Message -----
> > > From: "Keith Densmore" <densmore at idirect.com>
> > > To: <trsnider at mindspring.com>
> > > Cc: <r-1051-request at mailman.qth.net>
> > > Sent: Sunday, December 01, 2002 11:27 AM
> > > Subject: Re: [R-1051] R-1051's FS
> > >
> > >
> > > > Hi Tony,
> > > >
> > > > I have been following the R-1051 thread with great interest. It' s
> nice
> > to
> > > > know someone out there can service these beasts. I have an R-1051B
and
> > > have
> > > > managed to keep it running except for a problem on the main turret
> > tuning
> > > > drum. One of the switches does not make contact during frequency
> change.
> > I
> > > > have taken one of these things apart before but am at a loss on how
to
> > get
> > > > it back together. Bottom line, if I sent you it, what would it cost
to
> > > > repair, or do an exchange?
> > > >
> > > > Thanks,
> > > > Keith, ve3gem
> > > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Tony Snider" <trsnider at mindspring.com>
> > > > To: <r-1051 at mailman.qth.net>
> > > > Sent: Saturday, November 30, 2002 6:06 PM
> > > > Subject: Re: [R-1051] R-1051's FS
> > > >
> > > >
> > > > > James,
> > > > > give me a call sometime, I can most likely answer any questions
you
> > > might
> > > > > have and would be happy to help anyway I can, I have repaired and
> > > > overhauled
> > > > > a few hundred various model 1051s for the navy and have figured
out
> > most
> > > > > problems they come up with
> > > > > Tony
> > > > > 757-270-8424
> > > > > ----- Original Message -----
> > > > > From: "James A. (Andy) Moorer" <jamminpower at earthlink.net>
> > > > > To: <r-1051 at mailman.qth.net>
> > > > > Sent: Saturday, November 30, 2002 5:04 PM
> > > > > Subject: Re: [R-1051] R-1051's FS
> > > > >
> > > > >
> > > > > > Hello. I understand that you folks are professionals, but as an
> > > amateur
> > > > > > trying to figure out the R-1051, I find that the manual doesn't
> give
> > a
> > > > lot
> > > > > > of help on maintenance, overhaul, alignment (there must be some,
> > > musn't
> > > > > > there?) and other details of keeping your R-1051 happy. It gives
> > some
> > > > > help,
> > > > > > but not nearly as much as the other boatanchor manuals give. Do
> you
> > > > folks
> > > > > > have any additional documentation that you could post? Anyone
> > consider
> > > > > > writing some "how-to" articles for us?
> > > > > >
> > > > > > James A. (Andy) Moorer
> > > > > > www.jamminpower.com
> > > > > >
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Tony Snider" <trsnider at mindspring.com>
> > > > > > To: <r-1051 at mailman.qth.net>
> > > > > > Sent: Saturday, November 30, 2002 1:53 PM
> > > > > > Subject: Re: [R-1051] R-1051's FS
> > > > > >
> > > > > >
> > > > > > > Cecil,
> > > > > > > we ought to work together on some of this stuff I have about
100
> > > > radios
> > > > > > here
> > > > > > > of various types and about 1000 modules, as soon as I get the
> new
> > > shop
> > > > > > built
> > > > > > > 5000Sq ft We are going to start advertising to do radio and
> module
> > > > > > overhaul
> > > > > > > for the govt, I did a bunch for the navy last year as a
> > subcontract.
> > > > and
> > > > > > > some Collins synth. modules for an overseas gov a month ago,
> will
> > be
> > > > > > putting
> > > > > > > together a site with all the radios we can support and a list
of
> > > their
> > > > > > major
> > > > > > > boards, modules, etc. we are set up to overhaul most any navy
or
> > air
> > > > > force
> > > > > > > transmitters as well.
> > > > > > > tony
> > > > > > > ----- Original Message -----
> > > > > > > From: "Cecil Acuff" <chacuff at cableone.net>
> > > > > > > To: <r-1051 at mailman.qth.net>
> > > > > > > Sent: Saturday, November 30, 2002 1:13 PM
> > > > > > > Subject: Re: [R-1051] R-1051's FS
> > > > > > >
> > > > > > >
> > > > > > > > Happy Holidays Tony!
> > > > > > > >
> > > > > > > > Cecil Acuff
> > > > > > > >
> > > > > > > > www.r1051.com
> > > > > > > >
> > > > > > > >
> > > > > > > > ----- Original Message -----
> > > > > > > > From: Tony Snider <trsnider at mindspring.com>
> > > > > > > > To: <r-1051 at mailman.qth.net>
> > > > > > > > Cc: <Radiograveyard at aol.com>
> > > > > > > > Sent: Saturday, November 30, 2002 3:07 AM
> > > > > > > > Subject: [R-1051] R-1051's FS
> > > > > > > >
> > > > > > > >
> > > > > > > > > Hello,
> > > > > > > > > Need you guys to be part of the new garage building
> project!!
> > > have
> > > > > for
> > > > > > > > sale
> > > > > > > > > R-1051 straight, R-1051B, R-1051D, R-1051G and R-1051H all
> > sets
> > > > > fully
> > > > > > > > tested
> > > > > > > > > and guaranteed. all have small scratches and dings here
and
> > > there
> > > > > from
> > > > > > > > being
> > > > > > > > > heavy and handled (nothing major or out of the ordinary)
set
> > > > covers
> > > > > > 2-30
> > > > > > > > > mhz, decade tuning, very sensitive, has modes LSB, USB,
CW,
> > AM,
> > > > FSK,
> > > > > > > ISB,
> > > > > > > > > all solid state except 2 tube front end, rackmount, 115vac
> > > input,
> > > > > all
> > > > > > > sets
> > > > > > > > > include desk mount,  copy of OPERATORS instructions (not
> full
> > > > > manual)
> > > > > > > > power
> > > > > > > > > cord extra heavy duty shipping box and 2
> > > > > > > > > audio connectors.
> > > > > > > > >
> > > > > > > > > FULL REFUND OF PURCHASE PRICE IF YOU ARE NOT HAPPY
> > > > > > > > >
> > > > > > > > > R-1051 straight      450.00   very good condition except
> both
> > > > panel
> > > > > > > lamps
> > > > > > > > > out
> > > > > > > > >
> > > > > > > > > R-1051B                550.00   very good condition except
> > both
> > > > > panel
> > > > > > > > lamps
> > > > > > > > > out, includes  FULL
> > > > > > > > ORIGINAL
> > > > > > > > > MANUAL
> > > > > > > > >
> > > > > > > > > R-1051D                599.00   very good condition
> > > > > > > > >
> > > > > > > > > R-1051G                 699.00   very good condition, has
> > > > > synthesized
> > > > > > > > > six-pack, some decent touch
> > > > > > > > > up paint on front panel
> > > > > > > > >
> > > > > > > > > R-1051H                 899.00   excellent condition,
> > > synthesized
> > > > > > > > six-pack,
> > > > > > > > > last model of R-1051
> > > > > > > > > made
> > > > > > > > >
> > > > > > > > > ALWAYS LOOKING FOR 70'S OR LATER MIL RADIO, SURVEILLANCE,
> > RADAR,
> > > > > > > > > COUNTERMEASURES, MANUALS IF YOU HAVE SOME TO TRADE!!
> > > > > > > > > Thanks
> > > > > > > > > Tony
> > > > > > > > > 757-270-8424
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > _______________________________________________
> > > > > > > > > R-1051 mailing list
> > > > > > > > > R-1051 at mailman.qth.net
> > > > > > > > > http://mailman.qth.net/mailman/listinfo/r-1051
> > > > > > > >
> > > > > > > > _______________________________________________
> > > > > > > > R-1051 mailing list
> > > > > > > > R-1051 at mailman.qth.net
> > > > > > > > http://mailman.qth.net/mailman/listinfo/r-1051
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > R-1051 mailing list
> > > > > > > R-1051 at mailman.qth.net
> > > > > > > http://mailman.qth.net/mailman/listinfo/r-1051
> > > > > >
> > > > > >
> > > > > > _______________________________________________
> > > > > > R-1051 mailing list
> > > > > > R-1051 at mailman.qth.net
> > > > > > http://mailman.qth.net/mailman/listinfo/r-1051
> > > > > >
> > > > >
> > > > > _______________________________________________
> > > > > R-1051 mailing list
> > > > > R-1051 at mailman.qth.net
> > > > > http://mailman.qth.net/mailman/listinfo/r-1051
> > > > >
> > > >
> > >
> > >
> >
>
> _______________________________________________
> R-1051 mailing list
> R-1051 at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/r-1051

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