[Hammarlund] first SP-600 JX-26

Fri Mar 10 23:29:27 EST 2006

I realize this is the Hammarlund list but I have a question about an SX-28A 
I just bought, I brought it up on a variac (was told it ran fine, I just did 
it as I didn't know how long ago fine was) and it did run fine, but I had an 
unfortunate problem with it. I shut it off to move it and when I did I ran a 
ground to the ground lug which was also hooked to A2 with the LW hooked to 
A1 the way most receivers are run with single LW's. I plugged it in and the 
second I turned it on it blew the fuse (damn slo blo which I never use) and 
also took out the primary on the power transformer I think. It blew like it 
was a dead short. The manual isn't clear to me whether it's OK to run the 
ground with A2 also hooked to it. Is there also a Hallicrafters list?
E-mail off-list is fine.

Bob Young

----- Original Message ----- 
From: "Duane Fischer, W8DBF" <dfischer at usol.com>
To: "Bob Young" <youngbob53 at msn.com>
Sent: Thursday, March 09, 2006 12:29 AM
Subject: Re: [Hammarlund] first SP-600 JX-26

> Bob,
>
> Now hear this son! Let the rig warm up on the Variac for 72 hours! SLOW! 
> The
> capacitors take time to reform, if they will reform. If you hurry it, you
> risk one of the electrolytics exploding and a fire. So desptie what anyone
> tells you Bob, bring it very very slow and keep your eyes on it all of the
> time. do not go off and leave it alone! If something goes wrong you want 
> to
> be there to kill the power immediately and save serious damage from taking
> place.
>
> There are quite a few black beauties in the receiver, all of them are
> leaking and/or split, they all must be changed!
>
> I do not know how much experience you have doing this Bob, so let me give
> you some warnings here. This is NO job for a person who does not have
> experience or greater than average technical skills. There are sections in
> the 600 and the SX-28 that you are going to wonder how in the world to get
> apart, let alone replace parts. But all of those old capacitors need to go
> Bob. it is far better to do them all right up front, as you do not want to
> have to tear it apart six months from now just to replace one capacitor 
> that
> failed because you thought it would be alright.
>
> One excellent source to do the work is Phil Atchely, KO6BB. I think I gave
> you his name? It has been a bad past 1.5 days here thanks to Gary Brown in
> Maine.
> beaconeer at sbcglobal.net
>
> Duane W8DBF
>
> ----- Original Message ----- 
> From: "Bob Young" <youngbob53 at msn.com>
> To: "Duane Fischer, W8DBF" <dfischer at usol.com>; "hammarlund"
> <hammarlund at mailman.qth.net>
> Sent: Wednesday, March 08, 2006 10:55 PM
> Subject: Re: [Hammarlund] first SP-600 JX-26
>
>
> > Yes I thought so, I'm not going to power it up again until I've changed
> > out all the bad caps, damn! Well, anyway for a consolation prize I 
> > picked
> > up an SX-28A, powering it up right now on a variac and a DX-100 with a
> > nice old Astastic mic with a base today, gotta hurry up and take the ham
> > tests,
> >
> > Bob Young
> >
> >
> > ----- Original Message ----- 
> > From: "Duane Fischer, W8DBF" <dfischer at usol.com>
> > To: "Bob Young" <youngbob53 at msn.com>
> > Sent: Wednesday, March 08, 2006 11:31 PM
> > Subject: Re: [Hammarlund] first SP-600 JX-26
> >
> >
> >> Sounds like bad capacitors - Time to get to work Bob!
> >> ----- Original Message ----- 
> >> From: "Bob Young" <youngbob53 at msn.com>
> >> To: "Ziegenbein, Randy" <rziegenbein at volcanotherapeutics.com>;
> >> "hammarlund"
> >> <hammarlund at mailman.qth.net>
> >> Sent: Wednesday, March 08, 2006 10:15 PM
> >> Subject: Re: [Hammarlund] first SP-600 JX-26
> >>
> >>
> >> > Yes it does but not instantly, it takes a few seconds to come back 
> >> > on.
> >> > Even if the RF gain is all the way down when I switch it to AVC it's
> >> > clear
> >> > and blasts for a second or two becomes more and more distorted and 
> >> > then
> >> > blanks out, this take maybe 2-3 seconds total. It then seems to take 
> >> > a
> >> > second or two to recover after the AVC switch is shut off.
> >> >
> >> > Bob Young
> >> > Millbury, Ma
> >> >
> >> >
> >> > ----- Original Message ----- 
> >> > From: "Ziegenbein, Randy" <rziegenbein at volcanotherapeutics.com>
> >> > To: "Bob Young" <youngbob53 at msn.com>
> >> > Sent: Wednesday, March 08, 2006 11:19 AM
> >> > Subject: RE: [Hammarlund] first SP-600 JX-26
> >> >
> >> >
> >> > Does it come to life if you back off the rf gain?
> >> > 73, Randy
> >> >
> >> > -----Original Message-----
> >> > From: hammarlund-bounces at mailman.qth.net
> >> > [mailto:hammarlund-bounces at mailman.qth.net] On Behalf Of Bob Young
> >> > Sent: Tuesday, March 07, 2006 11:14 PM
> >> > To: hammarlund
> >> > Subject: [Hammarlund] first SP-600 JX-26
> >> >
> >> > I got my first SP-600 today which incidentally was on ebay a few 
> >> > weeks
> >> > ago,
> >> > here are the problem(s):
> >> > The AVC does not work, when the switch is up in the AVC position, it
> >> > gets
> >> > very loud for a second or two, then gets very distorted and blanks 
> >> > out
> >> > all
> >> > the sound for a few seconds, even with the switch in AVC off then it
> >> > comes
> >> > back. It receives on all bands but is VERY insensitive and noisy on 
> >> > all
> >> > bands except for the bottom two bands and even there I'm sure it 
> >> > should
> >> > be
> >> > more sensitive. The dial calibration is excellent, everything is 
> >> > where
> >> > it
> >> > should be pretty much, WWV is at 2.5, BCB's are very close within a 
> >> > few
> >> > kHz.
> >> > Most of the tubes tested good although several tested marginal and 
> >> > one
> >> > (6AC7) tested dead. I can see why people fall in love with these
> >> > radios,
> >> >
> >> > solid, solid, solid.
> >> > The lettering is black instead of white which must be a repaint, the
> >> > front
> >> > panel paint is nice, is there an easy way to repaint the lettering
> >> > white?
> >> > Maybe get some white enamel and wipe it into and across the engraved
> >> > letters
> >> > with a rag? I have seen and downloaded the cap article there and 
> >> > expect
> >> > to
> >> > do that and completely re tube it. Any help of hints advice will be
> >> > appreciated,
> >> >
> >> > here are some pictures of it which the former owner took:
> >> >
> >> > http://home.inreach.com/papillon/eBayPics/Hammerlund/
> >> >
> >> > Bob Young
> >> > Millbury, Ma
> >> > _______________________________________________
> >> > List Administrator: Duane Fischer W8DBF
> >> > ** For Assistance: dfischer at usol.com **
> >> > ----
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> >> > _______________________________________________
> >> > List Administrator: Duane Fischer W8DBF
> >> > ** For Assistance: dfischer at usol.com **
> >> > ----
> >> > http://mailman.qth.net/mailman/listinfo/hammarlund
> >> >
> >> >
> >> >
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> >>
> >>
> > _______________________________________________
> > List Administrator: Duane Fischer W8DBF
> > ** For Assistance: dfischer at usol.com **
> > ----
> > http://mailman.qth.net/mailman/listinfo/hammarlund
> >
> >
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