> On Sep 12, 12:26 pm, figureloop <[email protected]> wrote: > Hi: > > I have a bunch of NL840 that I will use someday. The ... datasheet ... [as] > types are high contrast. > > I wonder how they look in comparison to the non-high contrast tubes? > > Well, I managed to find a trio of NL845 at a fair price, so perhaps > hmm ... A.J. page, list the NL845 as a 'high contrast' version:
http://mysite.verizon.net/res0fab4/files/nixdat.htm All I've ever 'assumed' (assume = you know ...) is that some tubes are coated (painted) red (red-orange) to improve contrast. Are those tubes coated, or look like they may have been sometime in the past ? That coating comes off pretty easy after all these years. Of course, I always wondered why they even bothered. A simple piece of red acrylic does the job nicely. Maybe acrylic was really expensive back then (?). -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
