[R-1051] R-1051 Digest, Vol 63, Issue 1
john mac jannet
pappa308 at att.net
Sun Oct 19 12:43:08 EDT 2014
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
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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 ______________________________________________________________
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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
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