Google shows that Richardson Electronics has the SO565J SCR. Further Google
shows that this is a 50V 65Amp non sensitive gate SCR.
Any device that meets these specs would work. Astron possibly changed part
numbers with production runs as different parts were available and the cost
of these parts may have changed. I would use what ever is available at the
time of manufacture that was available and fit my budget. The different
part values may reflect these changes with production changes.
73
Glenn
WB4UIV
At 11:41 PM 05/26/06, you wrote:
>Yeah, the RS and RM series are electrically the same however, the schematics
>vary depending upon the year of print. I have the RS-50M schematic from 2000
>off the RB website. I requested a schematic from the rocket scientists at
>Astron. What they sent is dated 1996 and the two have significant differences
>between them not to mention a third I found elsewhere dated 1997 (again, some
>differences). I wouldn't be so concerned except the differences are in
>component ID's and values. I'm hoping someone has a more recent copy
>available-- perhaps two out of three (or four) will agree. The protective SCR
>is shorted in mine. I can buy the part from Astron next week but I was hoping
>to find it via Newark, Mouser, or the like. The SCR part number varies
>depending upon what schematic you look at but most call for a "SO565J". I have
>not yet found the manufacturer of this part number nor a source outside of
>Astron.
>Gary
>
>mch wrote:
>
> > The RM-50M has been around for many years (at least 20). It's the Rack
> > Mount version of the RS-50M. So, the schematics should be the same.
> >
> > Joe M.
> >
> > Mike Morris wrote:
> > >
> > > At 05:01 PM 05/26/06, you wrote:
> > > >Does anyone have the schematic from an Astron RM-50M that they can scan
> > > >and email to me? Yes, I've already called Astron. If any member of this
> > > >list can scan and email the schematic it would be appreciated. A common
> > > >file type like .doc or .pdf is preferred.
> > > >Thanks,
> > > >Gary
> > >
> > > Is the RM-50M one of the newer models, or did you mean the RS-50M ?
> > >
> > > If it's the RS, then look at the Astron page at www.repeater-builder.com
> > >
> > > Mike
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
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