[R-1051] R-1051 mul/ new topic

Sat Oct 9 10:33:08 EDT 2004

Hi Cecil,
    When I wrote my note, I'd forgotten that the 1051 list was different
than almost all others, you don't reply directly to the sender, it goes to
the whole list, as you know & remember.  But your answer I'm sure was of
interest to the whole group, and you answered privately on the rest.
    Anyhow, it sounds like too much trouble to get the extra band.  Not
knowing the scheme of things, I was just hopefull, but now do understand
it better.  I think the amplifier of the URT-23 could be set manually to
the 2-3mc band, and work OK.  It's wideband, not retuned from one end to
other, so maybe just a tweak at the low end would allow getting just below
2.0mc.
    Best that I know, the 6-packs are the same between the R-1051 & the
T-827 exciter.  I was given 2 complete URT-23 xmtrs abt 2 yrs ago, that
had been stored in a shed for a no. of yrs.  I was lucky, & got one on the
air, after buying a single phase pwr supply, orig. was 3-ph (I've got 2 of
them "extra" now).  It uses the T-827, which looks just like the R-1051,
and puts out 100mw into the amp, which puts out 1kw+  24/7.  Awesome rig,
a pr of 4CX1500's in the final.  I got 2 extra 6-pks with it, and later
got an R-1051, so actually have 5 6-pks, only 1 is 100% OK.  The one in
the R-1051 is bad on just one 1kc posn, as I remember.  Would have to
either try it agn, or look in my notes.  Damn memory, it's 20 yrs older
than I am, gotta keep notes on everything.
    As I remember, when I was into it a few mo.s ago, it seems like the
6-pk from the R-1051 might only have a bad xtal, so maybe I should just
swap it with one from one of the spares, if I could be sure that one was
OK.
    If you could give me a non-binding estimate of cost, I could send you
1 or 2 6-pks for repair.
thanks,
Al, W8UT

----- Original Message ----- 
From: "Cecil Acuff" <chacuff at cableone.net>
To: "R-1051 Discussion Group" <r-1051 at mailman.qth.net>
Sent: Friday, October 08, 2004 11:32 AM
Subject: Re: [R-1051] R-1051 mul/ new topic


> Hi Al,
>
>         I guess it's possible...here are the hurdles to be overcome as I
see
> it.
>
> 1)  Synthesizer would have to be modified...one of the Mhz crystals in
the
> motor driven Mhz osc would have to be changed to a new
value...calculated to
> give you the new frequency you are interested in...probably 1.000Mhz to
> 1.999Mhz. since each band is 1 Mhz wide.  Some math would have to be
> done...shouldn't be too hard.  3 of the MHZ strips in the RF deck would
have
> to be retuned....most likely requiring parts replacement because of the
> distance of the move....Capacitors in the RF deck are switched in to
keep
> things in resonance as various 100, 10 and 1 Kc segments are tuned.
Those
> may have to be replaced. (a real Bear!)
>
> All this would require that you give up one 1 Mhz segment that you
currently
> have to achieve the new band....The 100, 10 and 1 Kc tuning should be
> accurate....but the Mhz display will be wrong...say you give up the 2
Mhz
> segment...now when on the 2 Mhz setting it will actually be 1 Mhz plus
what
> ever 100, 10 and 1 Kc frequency you dial in.
>
> That's the only way I know of to do what you are wanting to do....
>
> I can look into the math...it may require 2 crystals....I'll have to
look.
>
> Most folks probably think that those frequencies below 2 Mhz are just
> blocked by something that don't allow the radio to physically tune down
> there...the reality is there are only 28 1 Mhz positions in the RF deck
and
> Mhz oscillator crystal deck...used to cover from 2.000 through 29.999
Mhz.
>
> Probably the most likely thing would be to convert the 2 Mhz
position....the
> componentry is going to be the closest to the frequency desired....may
just
> require retuning and new crystals...
>
> Cecil....
> ----- Original Message ----- 
> From: "Al Parker" <anchor at ec.rr.com>
> To: "R-1051 Discussion Group" <r-1051 at mailman.qth.net>
> Sent: Thursday, October 07, 2004 8:32 PM
> Subject: Re: [R-1051] R-1051 mul/ new topic
>
>
> > Hi Cecil,
> >     I've been meaning to ask you for many months  -- is it possible to
> > trick an R-1051, or T-827, into working on 160 meters?  I'd think that
the
> > RF tuning could be tweaked or might not need to be, for 1980 - 1999,
but
> > is there an easy way to trick the tuning interlock?  I've looked at
the
> > skem a bit, but not sure.
> >     Have you & Les finished that stack of 390's?  Did you get any
takers
> > for all the 1051 stuff?
> >     And one more, what would you charge to get one of my 6-packs
going?
> > I've got 3 that aren't right, I think 2 do work on some posns.  I"ve
only
> > got one that's good, for 1 R-1051 & 2 T-827's, and have 2 spares.
> > 73,
> > Al, W8UT
> > New Bern, NC
> > BoatAnchors appreciated here
> > http://www.thecompendium.net/radio/
> > http://www.hammarlund.info
> >
> > ----- Original Message ----- 
> > From: "Cecil Acuff" <chacuff at cableone.net>
> > To: "R-1051 Discussion Group" <r-1051 at mailman.qth.net>; "Barry Hauser"
> > <barry at hausernet.com>
> > Sent: Thursday, October 07, 2004 9:14 PM
> > Subject: Re: [R-1051] R-1051 multicircuit connector
> >
> >
> > > Hey Guys,
> > >
> > >         My connector (chassis mount 39 pin) is made by Bendix.  It
is
> > marked
> > > PT 07A20-39P.  The B manual does not give the mating connector
> > designation.
> > > The above number should get you in the ball park...
> > >
> > > Good luck!
> > >
> > > Cecil...
> >
> >
> > _______________________________________________
> > R-1051 mailing list
> > R-1051 at mailman.qth.net
> > http://mailman.qth.net/mailman/listinfo/r-1051
> >
>
>
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