[R-1051] R-1051 Digest, Vol 63, Issue 1

paul swed paulswedb at gmail.com
Sun Oct 19 14:53:15 EDT 2014 

Indeed the r1051 groups alive.
Yes the translator synth was called the 6 pac. It is a royal pain in the
butt to work on. But you can remove the can tops and sort of get around.
The other thing I have done is provide external power and signals and such
to emulate the radio. (That does require a fair test bench with sig gens)
That said I have consistently found the xtals off frequency or need a
trimming even had to add a small cap to one.
Now to be very honest. Its not like the 6 pac goes bad all of the time the
beasty is actually pretty stable. I also have a the transciever version of
the 1051. That puts out a killer 250 mw! Yahooo. I don't really use it very
much.
Regards
Paul
WB8TSL

On Sun, Oct 19, 2014 at 12:54 PM, Nick England <navy.radio at gmail.com> wrote:

> Sorry - I had heard others call it that so thought it was a universal term.
> The synthesizer/translator assembly in the earlier R-1051 models has 6
> individual modules plugged into a base - and then the base is plugged into
> the rcvr chassis.
> http://www.navy-radio.com/rcvrs/r1051/r1051-modules-01.JPG
>
> In the G & H models this is a single synthesizer/translator assembly (I
> don't know what it looks like inside...yet)
> http://www.navy-radio.com/rcvrs/r1051/r1051g-1207-02.JPG
>
> Nick England K4NYW
> www.navy-radio.com
>
> On Sun, Oct 19, 2014 at 12:43 PM, john mac jannet <pappa308 at att.net>
> wrote:
>
> > what actually is the 6 pack?
> >
> >
> > On Sunday, October 19, 2014 9:36 AM, "r-1051-request at mailman.qth.net" <
> > r-1051-request at mailman.qth.net> wrote:
> >
> >
> >
> > Send R-1051 mailing list submissions to
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> > or, via email, send a message with subject or body 'help' to
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> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of R-1051 digest..."
> >
> >
> > Today's Topics:
> >
> >    1. (no subject) (john mac jannet)
> >    2. Re: (no subject) (Ron via R-1051)
> >    3. URC-35A (bavarianradio at comcast.net)
> >    4. Re: URC-35A (Ray Fantini)
> >    5. Troubleshooting/repairing R-1051 - advice needed (Nick England)
> >    6. Re: Troubleshooting/repairing R-1051 - advice needed (Tony Snider)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Sun, 24 Aug 2014 14:58:30 -0700
> > From: john mac jannet <pappa308 at att.net>
> > To: "r-1051 at mailman.qth.net" <r-1051 at mailman.qth.net>
> > Subject: [R-1051] (no subject)
> > Message-ID:
> >     <1408917510.77623.YahooMailNeo at web185004.mail.gq1.yahoo.com>
> > Content-Type: text/plain; charset=iso-8859-1
> >
> >
> > i have a r-1051? first model.i get wwv on 10 and 15 mc.set is noisy.not
> > great on sensitivity
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Mon, 25 Aug 2014 15:58:16 -0400 (EDT)
> > From: Ron via R-1051 <r-1051 at mailman.qth.net>
> > To: pappa308 at att.net, r-1051 at mailman.qth.net
> > Subject: Re: [R-1051] (no subject)
> > Message-ID: <8D18EB60B47670A-B14-2D075 at webmail-d176.sysops.aol.com>
> > Content-Type: text/plain; charset="us-ascii"
> >
> >
> > Check the two 6BZ6 rf amp tubes. They are plentiful and cheap!
> >
> > ron
> > N4UE
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: john mac jannet <pappa308 at att.net>
> > To: r-1051 <r-1051 at mailman.qth.net>
> > Sent: Sun, Aug 24, 2014 5:58 pm
> > Subject: [R-1051] (no subject)
> >
> >
> >
> > i have a r-1051  first model.i get wwv on 10 and 15 mc.set is noisy.not
> > great on
> > sensitivity
> > ______________________________________________________________
> > R-1051 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/r-1051
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:R-1051 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: 3
> > Date: Fri, 17 Oct 2014 02:17:47 +0000 (UTC)
> > From: bavarianradio at comcast.net
> > To: r-1051 at mailman.qth.net
> > Subject: [R-1051] URC-35A
> > Message-ID:
> >     <486915289.7758664.1413512267493.JavaMail.root at comcast.net>
> > Content-Type: text/plain; charset=utf-8
> >
> > Hello all, I have an AN/URC-35A and I am having a power supply sagging
> > problem. I haven't determined yet if it is in the 28 volt brute force
> > supply or in the inverter. Has anyone here had any experience with
> these???
> > Many Thanks, Ross W1EKG
> >
> >
> > ------------------------------
> >
> > Message: 4
> > Date: Fri, 17 Oct 2014 12:10:26 +0000
> > From: Ray Fantini <RAFANTINI at salisbury.edu>
> > To: R-1051 Discussion Group <r-1051 at mailman.qth.net>
> > Subject: Re: [R-1051] URC-35A
> > Message-ID:
> >     <85826938B368914C851771685436B9BE023F7261 at EXMBX05.salisbury.edu>
> > Content-Type: text/plain; charset="us-ascii"
> >
> > Power supply problems in the URC-35 is its natural state, what's the
> > supply section look like? Any sings of discoloration or burning?
> >
> > Ray F
> >
> > -----Original Message-----
> > From: R-1051 [mailto:r-1051-bounces at mailman.qth.net] On Behalf Of
> > bavarianradio at comcast.net
> > Sent: Thursday, October 16, 2014 10:18 PM
> > To: r-1051 at mailman.qth.net
> > Subject: [R-1051] URC-35A
> >
> > Hello all, I have an AN/URC-35A and I am having a power supply sagging
> > problem. I haven't determined yet if it is in the 28 volt brute force
> > supply or in the inverter. Has anyone here had any experience with
> these???
> > Many Thanks, Ross W1EKG
> > ______________________________________________________________
> > R-1051 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/r-1051
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:R-1051 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: 5
> > Date: Sun, 19 Oct 2014 12:28:40 -0400
> > From: Nick England <navy.radio at gmail.com>
> > To: R-1051 Discussion Group <r-1051 at mailman.qth.net>
> > Subject: [R-1051] Troubleshooting/repairing R-1051 - advice needed
> > Message-ID:
> >     <CAB55hNfx+EQrWCaNX00W5vS8FxqF7_gcWGrB+ExbYuEjqmFrig at mail.gmail.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > Hi gang. I am just getting my feet wet in working on the R-1051 and would
> > like to gather a little knowledge from those more experienced.
> >
> > Main question (so far) is how do you troubleshoot and repair a 6-pack?
> Not
> > having a TS-xxxx as the manual recommends, is it common practice to test
> in
> > the receiver with homebrew extender cables made from an old 6-pack? If
> so,
> > where do I get an old 6-pack? If not, what do you recommend?
> >
> > Background -
> > Actually I am starting with an RT-618A xcvr (part of URC-35A) but it is
> > mostly an R-1051 and I have several R-1051's in the garage that'll get
> > moved onto the workbench some day. So.....
> >
> > First I found and fixed a fair amount of mechanical misalignment in the
> RF
> > turret MHz ring - the LC strip contact blades were whacking and bending
> the
> > fixed contacts (and sliding over or under rather than through, etc.).
> Same
> > problem in the AM-3007 turret. I'm guessing this was the result of
> someone
> > trying to pull out a turret without removing the LC strips first. --  Is
> > this a common problem?
> >
> > Once I got the turrets all aligned (and fixed some problems in the 28vdc
> > supply) and I started testing things, smoke started pouring out of the RF
> > turret when I switched to 26MHz - found that the A26 strip had a short
> > which was grounding B+. OK, the turret comes apart again and back
> together
> > yet another time. I figure that short was just an odd item.
> >
> > The rcvr had very low sensitivity. RF stages checked OK, but some test
> > points on the 6-pack weren't showing much of anything on a scope. So I
> dug
> > a -1051D out of the garage and swapped in a 6-pack. Voila - rcvr works
> fine
> > now. But now I need to fix the original 6-pack.
> >
> > So, any advice on how to work on this dense collection of circuit boards
> > and parts will be greatly appreciated.
> >
> > Cheers,
> > Nick England K4NYW
> > www.navy-radio.com
> >
> >
> > ------------------------------
> >
> > Message: 6
> > Date: Sun, 19 Oct 2014 12:36:01 -0400
> > From: Tony Snider <trsnider at cox.net>
> > To: R-1051 Discussion Group <r-1051 at mailman.qth.net>
> > Subject: Re: [R-1051] Troubleshooting/repairing R-1051 - advice needed
> > Message-ID: <451A91A7-B50E-49DC-A3B9-4876EA2A88CA at cox.net>
> > Content-Type: text/plain;    charset=us-ascii
> >
> > Best advise i can give you is borrow Tonys extender cables
> >
> > Sent from my iPhone
> >
> > > On Oct 19, 2014, at 12:28 PM, Nick England <navy.radio at gmail.com>
> wrote:
> > >
> > > Hi gang. I am just getting my feet wet in working on the R-1051 and
> would
> > > like to gather a little knowledge from those more experienced.
> > >
> > > Main question (so far) is how do you troubleshoot and repair a 6-pack?
> > Not
> > > having a TS-xxxx as the manual recommends, is it common practice to
> test
> > in
> > > the receiver with homebrew extender cables made from an old 6-pack? If
> > so,
> > > where do I get an old 6-pack? If not, what do you recommend?
> > >
> > > Background -
> > > Actually I am starting with an RT-618A xcvr (part of URC-35A) but it is
> > > mostly an R-1051 and I have several R-1051's in the garage that'll get
> > > moved onto the workbench some day. So.....
> > >
> > > First I found and fixed a fair amount of mechanical misalignment in the
> > RF
> > > turret MHz ring - the LC strip contact blades were whacking and bending
> > the
> > > fixed contacts (and sliding over or under rather than through, etc.).
> > Same
> > > problem in the AM-3007 turret. I'm guessing this was the result of
> > someone
> > > trying to pull out a turret without removing the LC strips first. --
> Is
> > > this a common problem?
> > >
> > > Once I got the turrets all aligned (and fixed some problems in the
> 28vdc
> > > supply) and I started testing things, smoke started pouring out of the
> RF
> > > turret when I switched to 26MHz - found that the A26 strip had a short
> > > which was grounding B+. OK, the turret comes apart again and back
> > together
> > > yet another time. I figure that short was just an odd item.
> > >
> > > The rcvr had very low sensitivity. RF stages checked OK, but some test
> > > points on the 6-pack weren't showing much of anything on a scope. So I
> > dug
> > > a -1051D out of the garage and swapped in a 6-pack. Voila - rcvr works
> > fine
> > > now. But now I need to fix the original 6-pack.
> > >
> > > So, any advice on how to work on this dense collection of circuit
> boards
> > > and parts will be greatly appreciated.
> > >
> > > Cheers,
> > > Nick England K4NYW
> > > www.navy-radio.com
> > > ______________________________________________________________
> > > R-1051 mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/r-1051
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:R-1051 at mailman.qth.net
> > >
> > > This list hosted by: http://www.qsl.net/
> > > Please help support this email list: http://www.qsl.net/donate.html
> >
> >
> > ------------------------------
> >
> > Subject: Digest Footer
> >
> > _______________________________________________
> > R-1051 mailing list
> > R-1051 at mailman.qth.net
> > http://mailman.qth.net/mailman/listinfo/r-1051
> >
> >
> > ------------------------------
> >
> > End of R-1051 Digest, Vol 63, Issue 1
> > *************************************
> > ______________________________________________________________
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> >
> > This list hosted by: http://www.qsl.net
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> ______________________________________________________________
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>
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