[R-390] R-390 Spectrum Analizer

[Dan Merz]

Joe,  is the TS-723 the fore runner to the HP 333 distortion analyzers;
if so is it useful to quantify the audio distortion of various 390/390a
setups?  Dan

Joe Foley wrote:

> --- Dave Faria <Dave_Faria@hotmail.com> wrote:
> > I have a Singer Spectrum Analizer and I want to use
> > it with my 390.  The
> > unit needs some restoration work.  Is there a group
> > list or someone on the
> > 390 list who would not mind questions as I do the
> > work??
> +++++++++
> Speaking of which,
>
> I just got a TS-723 by UPS from California, I can't
> really call it shipping damage though it is, kind of.
>
> It was packed well enough I thought.
>
> Every screw in it was shaken loose!  The four-section
> air variable cap inside was hanging by one of the four
> mounting screws, two of the others were rolling aound
> in the cabinet, the fourth was in the shipping box.
> This was attached by 1/2" long screws!!  They had
> backed out in shipping.
>
> All of the tubes have clamps to hold them in, but the
> bolts that hold everything else were all LOOSE!
>
> This is the second piece of equipment to arrive with
> knobs floating around in the box, instead of being
> attached to the shaft by the TWO setscrews!  This one
> had three loose knobs.  Four screws missing from the
> front panel, found one, so far.
>
> Oh, yes, it did show signs of having been dropped on
> one bottom corner.
>
> This why you should check all the grounding points in
> your radios.
>
> Amazing,
>
> Joe
>
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