--- Gary <[EMAIL PROTECTED]> 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 > > It is not unusual for the part numbers and components to change over the years in electronics. Many noncritical parts will be bought in quantities and when they are used up the next batch may be obsolete or a beter price may be had for another part number. All that is needed for the scr is for it to be rated at the needed voltage and current and for the gate to trigger about the same. There are probably 25 to 50 devices that will make that rating, the same with many of the parts in the Astron. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
