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

Sun Oct 19 12:54:39 EDT 2014

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:
>
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> 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
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> ------------------------------
>
> 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
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> Please help support this email list: http://www.qsl.net/donate.html
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>
> ------------------------------
>
> 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
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> ------------------------------
>
> End of R-1051 Digest, Vol 63, Issue 1
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