[Hammarlund] Accuracy

[Al Parker]

Hi folks,
    I'll jump in on this one, too.  Ed and Les and I agree.  From
experience (more SP-600's than I've kept track of), get the dials correct
to the index mark and they'll come within a pointer width (almost)
everywhere.
    I forget who started this thread, but a few wks ago somebody had the
tracking problem, IIRC, and I advised he check that.  Not sure if I heard
anything after that.
    I do remember seeing the "knifing" email that was referred to and Roy
would like to see.  I've searched my archives, incl. The Hammarlund
Historian website files I have that aren't on the site yet, and haven't
found it.  Do remember that there was only one woman who did them, a
certain no./day, don't think there was any "super secret spooky stuff", or
eqpt., going on.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.boatanchors.org
http://www.hammarlund.info


----- Original Message ----- 
From: "Les Locklear" <leslocklear at cableone.net>
To: <hammarlund at mailman.qth.net>
Sent: Saturday, January 20, 2007 1:49 PM
Subject: Re: [Hammarlund] Accuracy


> Of all the SP-600's I have seen over the years, 90% of the problem lies
with
> the mechanical alignment of the dials. Make sure the line up with the
proper
> lines prior to doing the electrical if and rf alignments. One well known
> rebuilder of SP-600's (now a SK) was notorious for not having the dials
> "zeroed" on his rebuilds.
>
> Ymmv, Taxes may be extra.
>
> Les Locklear
> Gulfport, Ms.
> DX'ing Since '57
> http://www.hammarlund.info/
>
> ----- Original Message ----- 
> From: <DJED1 at aol.com>
> To: <nq5t at tx.rr.com>; <hammarlund at mailman.qth.net>
> Sent: Saturday, January 20, 2007 12:35 PM
> Subject: Re: [Hammarlund] Accuracy
>
>
> > Unless the tuning capacitor has been physically damaged, it seems
unlikely
> > that the capacitor itself has changed.  The first thing I would check,
> > after
> > bypasses, etc, is whether the dial reads correctly when the capacitor
is
> > fully
> > meshed against the stop.  I know the SP-600 has a mark on the dial to
> > indicate the stop.  If the mechanical drive has been messed with, the
> > capacitance
> > will be off at all points, and alignment will not correct it at all
> > points.
> > Fortunately, I've been able to align my SP-600 to within a dial
pointer
> > width
> > at almost all frequencies.  Good enough for me.
> > Ed
> >