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Joseph Meagher
telegraph.office at verizon.net
Sun Nov 30 20:59:35 EST 2008
-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of r-390-request at mailman.qth.net
Sent: Saturday, November 29, 2008 12:29 PM
To: r-390 at mailman.qth.net
Subject: R-390 Digest, Vol 55, Issue 13
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Today's Topics:
1. RE: Lucky R-390A find on eBay... (Chris Kepus)
2. Re: Lucky R-390A find on eBay... (ToddRoberts2001 at aol.com)
3. WA3KEY's R-390A (Bill Coleman N2BC)
4. Lucky R-390A find on eBay... (Michael Crestohl)
5. RE: Lucky R-390A find on eBay... (Francesco Ledda)
6. Re: Lucky R-390A find on eBay... (ToddRoberts2001 at aol.com)
7. Re: antenna relay troubleshooting (more detail)
(Flowertime01 at wmconnect.com)
8. Re: Lucky R-390A find on eBay... (Flowertime01 at wmconnect.com)
9. Re: Lucky R-390A find on eBay... (rbethman)
----------------------------------------------------------------------
Message: 1
Date: Fri, 28 Nov 2008 23:46:21 -0800
From: "Chris Kepus" <ckepus at comcast.net>
Subject: RE: [R-390] Lucky R-390A find on eBay...
To: "'Gary Pewitt'" <n9zsv at magtel.com>, "'Norm - WA3KEY'"
<norm at wa3key.com>, <r-390 at mailman.qth.net>
Message-ID: <50A3C603E66F4E4AB31490B564D01758 at compmom>
Content-Type: text/plain; charset="US-ASCII"
Norm, I felt you really didn't need to know one more person has covered
their keyboard and desktop with green drool but Gary's admission of drool
inspired me to add my comments. The pictures you took of the beauty are
just amazing. As one person has already noted, these will serve as a
benchmark reference.
Thanks for sharing them and congratulations!
73,
Chris
W7JPG
-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Gary Pewitt
Sent: Friday, November 28, 2008 11:19 PM
To: Norm - WA3KEY; r-390 at mailman.qth.net
Subject: Re: [R-390] Lucky R-390A find on eBay...
Norm, you must have the nicest, cleanest R-390 in existence. Even
Rick Mish doesn't make them look that nice. I know 'cause I had one
of his full house rebuilds. I'd still replace the "capacitors of
death" and check out the mechanical filters.
At first I thought that $760.00 didn't seem like that much of a
bargain. Then I looked at the pictures. Now I have to clean the
drool off my keyboard. You are one lucky guy.
Best of luck with it. 73 Gary
At 09:15 PM 11/28/2008, Norm - WA3KEY wrote:
>Greetings to all on the list.
>
>I've been a subscriber (in digest form) for many years but only
>post once in a while when in need of a hard-to-find part. A few
>weeks ago an R-390 caught my eye on eBay. It was listed as a
>Stewart Warner and only featured one small, out-of-focus picture
>with covers on. The brief description read "working," "selling
>for a friend" and the odometer was on "28,185." I was looking
>for a reasonably clean, working radio for restoration or possibly
>parts (I already have 5 others), so thought this one might go for
>a reasonable price. It did, and I won the auction for $760.
>
>Upon arrival I peeled away the bubble-wrap and the first thing
>that caught my eye was what I thought was a reproduction top
>cover. I pulled the radio out of the box and was happy to see a
>front panel that looked like new and a back panel that featured
>an original line cord with metal 3-wire plug neatly stowed in its
>clip. I popped the top cover and my jaw dropped. Aside from a
>thin layer of dust, it looked like a new radio. As I carefully
>removed the modules, one-by-one, they all revealed EAC markings
>... not Stewart Warner as indicated by the nameplate.
>
>Long story short - all the tubes were either GE or RCA (except
>for the ballast, of course) and bore the same "68" date codes as
>the original font panel meters. Even more remarkable was that
>aside from the 0A2 and 26Z5's (which run hotter) all the silk
>screen markings on the tubes remained fast even when rubbed with
>a damp cloth. This was a new radio! The only sign of age was a
>hardening of the insulation in the line cord and slight yellowing
>of the white lines on the knobs. A close inspection of the
>"green" screws revealed no scratches and the tubes almost seemed
>welded in their sockets for not having been touched in 40 years.
>As expected, they all tested as new in my TV-7D/U.
>
>All the radio required was a good cleaning with compressed air
>and a dry paint brush and some soapy water on a cloth. Some
>Tarn-X was applied to the silver plated surfaces with Q-tips and
>a few of the knobs had some small paint chips to touch up.
>Electrically, the radio came right up to spec with the exception
>of transformer Z216 in the high-IF which failed to peak and was
>replaced.
>
>Since most of us will never get to see what a new R-390A looks
>like, I took photos of all the modules before reassembly and posted
>them at my Web site. Thirty high-resolution photos tell the story
>at www.wa3key.com/r390a (r390a-01.jpg thru r-390a-30.jpg)
>
>I e-mailed the seller informing it was the cleanest R-390A I've
>ever seen and inquiring as to the radio's origin, but he never
>replied.
>
>Enjoy the photos...
>
>73 de Norm - WA3KEY
>norm at wa3key.com
>
>_____________________________________________________________
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Gary Pewitt N9ZSV garypewitt at centurytel.net 479 675 4376
1500 French Prairie Rd. Booneville, Arkansas 72927
Sturgeon's Law "Ninety percent of everything is crap."
Pewitt's Law: But it's that other 10% that makes life worth living."
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------------------------------
Message: 2
Date: Sat, 29 Nov 2008 07:37:50 EST
From: ToddRoberts2001 at aol.com
Subject: Re: [R-390] Lucky R-390A find on eBay...
To: r-390 at mailman.qth.net
Message-ID: <d63.23a81883.3662919e at aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi All,
I went to look at the R-390A pictures but they all look grainy to me
as if they are copies of copies. Does anyone else notice this? I wrote
to Norm asking what happened with the pictures.
73 - Todd WD4NGG
**************Life should be easier. So should your homepage. Try the NEW
AOL.com.
(http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000
002)
------------------------------
Message: 3
Date: Sat, 29 Nov 2008 07:39:29 -0500
From: "Bill Coleman N2BC" <n2bc at stny.rr.com>
Subject: [R-390] WA3KEY's R-390A
To: <R-390 at mailman.qth.net>
Message-ID: <B8EDE3F527BE4DE0AD6C3EC42A155884 at Radio1RAID>
Content-Type: text/plain; charset="iso-8859-1"
Norm, only 1 word to describe your 'catch' Beautiful!
But, in an effort to keep us all grounded in reality, I'll pass along
something from the other end of the spectrum. I'm sure many of us have seen
the wrecks called "Blue Stripers". I'll not dwell on the good/bad of the
situation.
A friend of mine gave me a couple of "Blue Stripers". While their condition
was pretty sad, I'm well on the way to turning the two into one not-too-bad
looking receiver.
The really nasty one had some "buried treasure" within:
http://home.roadrunner.com/~n2bc/R-390A_Smile.jpg
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Message: 4
Date: Sat, 29 Nov 2008 07:56:31 -0500
From: Michael Crestohl <W1RC at Verizon.net>
Subject: [R-390] Lucky R-390A find on eBay...
To: r-390 at mailman.qth.net
Message-ID: <0KB300GU0IQ0FUPC at vms173005.mailsrvcs.net>
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Message: 5
Date: Sat, 29 Nov 2008 07:45:47 -0600
From: "Francesco Ledda" <frledda at verizon.net>
Subject: RE: [R-390] Lucky R-390A find on eBay...
To: <ToddRoberts2001 at aol.com>, <r-390 at mailman.qth.net>
Message-ID: <PAEJKNPPIGMNDLMJLENMIEMBHDAA.frledda at verizon.net>
Content-Type: text/plain; charset=us-ascii
The pictures look great on my PC.
-----Original Message-----
From: r-390-bounces at mailman.qth.net
[mailto:r-390-bounces at mailman.qth.net]On Behalf Of
ToddRoberts2001 at aol.com
Sent: Saturday, November 29, 2008 6:38 AM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] Lucky R-390A find on eBay...
Hi All,
I went to look at the R-390A pictures but they all look grainy to me
as if they are copies of copies. Does anyone else notice this? I wrote
to Norm asking what happened with the pictures.
73 - Todd WD4NGG
**************Life should be easier. So should your homepage. Try the NEW
AOL.com.
(http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000
002)
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Help: http://mailman.qth.net/faq.htm
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------------------------------
Message: 6
Date: Sat, 29 Nov 2008 11:33:31 EST
From: ToddRoberts2001 at aol.com
Subject: Re: [R-390] Lucky R-390A find on eBay...
To: r-390 at mailman.qth.net
Message-ID: <d15.39acb5fe.3662c8db at aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi All,
I found out the problem of my getting grainy-looking pictures from
WA3KEY's website was due to something strange happening with
my AOL browser.
When I switched over to IE the pictures are coming out fine now as
jpeg files of the proper size.
Thanks to Jerry W5KP and Roy K1LKY for their suggestions. The
R-390A pictures look great! Thanks to Norm for the fine pictures!
73 - Todd WD4NGG
**************Life should be easier. So should your homepage. Try the NEW
AOL.com.
(http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000
002)
------------------------------
Message: 7
Date: Sat, 29 Nov 2008 12:00:12 EST
From: Flowertime01 at wmconnect.com
Subject: Re: [R-390] antenna relay troubleshooting (more detail)
To: R-390 at mailman.qth.net
Message-ID: <d25.3e152f06.3662cf1c at wmconnect.com>
Content-Type: text/plain; charset="us-ascii"
Hi Roger,
Thank you very much. I got this email just as I was getting ready to cry
to the group for more help. I was going to ask about the switch. I have
already replaced the rectifier bridge, CR-102. That did not work so I
changed
the antenna relay with no luck. I am ready to go back and do the voltage
testing you
just prescribed. It figures this would have to turn into a big science
project.
The good thing is A: It is a good learning experience and B: Thank to nice
people like you, there is hope :-)
Thanks again, Regards, Scott
-----------------------------------------------------------
Scott,
Ground the break-in on pin 9 of the TB and operate the break-in switch. This
should ground the bridge on the AC side. Cause DC to flow on the output side
of the bridge and operate the antenna relay.
If the break-in relay does not operate that's another problem on it's own
circuit.
Maybe just exercising the break-in relay contacts a few times will restore
the circuit operation. If you have not operated the break-in relay in some
period of time it could just be wanting some exercise to deox a contact
face.
If this break-in relay test works you then need to explore from the break-in
relay contacts in the audio deck to the function switch on the front panel,
where the function switch grounds the AC side of the bridge to operate the
antenna relay in CAL. The relay is also operated in standby but we do not
worry
about that mode most of the time. We just listen for the antenna relay click
as
the function switch is changed from AGC to STANDBY or back.
If this test does not work, you need to check for an AC voltage at the diode
and DC voltage out of the diode.
You got past an open relay coil by replacing the relay (hopefully you did
check it for continuity) and the bridge.
Now you are for sure likely looking for a wire broken off at one of the
solder joints around a switch.
The antenna relay circuit goes through the audio module and the power supply
module. You may need to pull the back shells off the module connectors
looking
for a broken wire. You should also check in the modules for a broken wire at
a connector or the break-in relay connector. But check the schematic and
trace
the circuit.
A good schematic from any of the web manuals Y2K or TM's should be enough
document to help you trace and trouble shoot the circuit.
Bad wire in the middle of nowhere in the harness are not a likely problem
unless some other event has impacted the harness. Then you have a point of
visible damage and reason to investing for a broken wire in an unlikely
place.
Ah science projects. That's part of the disease.
Roger AI4NI
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Message: 8
Date: Sat, 29 Nov 2008 12:15:10 EST
From: Flowertime01 at wmconnect.com
Subject: Re: [R-390] Lucky R-390A find on eBay...
To: r-390 at mailman.qth.net
Message-ID: <bd2.33fec26a.3662d29e at wmconnect.com>
Content-Type: text/plain; charset="us-ascii"
Fellows,
I make a motion we ask Norm if we can add his photo's to the R390 CD.
It may be to late this year. But could we get the keeper of the CD to post
its location again. I think some R390 CD's would make a few great Christmas
gifts.
Norm. I do like your photos.
Roger L. Ruszkowski AI4NI
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Message: 9
Date: Sat, 29 Nov 2008 12:23:31 -0500
From: rbethman <rbethman at comcast.net>
Subject: Re: [R-390] Lucky R-390A find on eBay...
To: r-390 at mailman.qth.net
Cc: Flowertime01 at wmconnect.com
Message-ID: <49317A93.5030905 at comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Roger,
I second the motion!
These are an excellent addition.
Bob - N0DGN
Flowertime01 at wmconnect.com wrote:
> Fellows,
>
> I make a motion we ask Norm if we can add his photo's to the R390 CD.
>
> It may be to late this year. But could we get the keeper of the CD to
> post
> its location again. I think some R390 CD's would make a few great
> Christmas gifts.
>
> Norm. I do like your photos.
>
> Roger L. Ruszkowski AI4NI
--
Bob - NXDGN
------------------------------
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