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Antique Radio Technical Forum
Dial light size

Posted by nyt on 04/02/2009 09:06

:Well, thanks for comments and searches. I mainly order from RadioDaze and AntiqueElectronics and noticed they don't have any 1490's so didn't look further but now notice that PTOP has them maybe. DO YOU KNOW WHY THOMAS SAYS NOT TO RUN THIS SET W/O THE LAMPS?? I assume it has to do with current drain but not sure about the specifics.
::I'm not trying to be a smart-ass but do you know how to use an internet search engine? I use Altavista and when I typed in "1490+lamp" I got lots of hits and the first one was from Donsbulbs.com. The specs were given right there.
:::Where do you guys see a diagram for this set? I know possibly on "techpreservation" but I can't seem to get on that site. Where does Edd get the specs on a 1490 light??
::::Norm and possibly Peter know where to get them. Temporarily you can put a #47 in its place.
::::Do not operate the radio without pilot lamps.

because the lamps supply current to the plate of the rectifier tube. with no bulbs the tube heater filament must pass all the current and probably blow out in short order

Dial light size 
John 04/01/2009 21:34 
Edd 04/01/2009 22:24 
John 04/01/2009 22:40 
Edd 04/01/2009 22:48 
Thomas Dermody 04/02/2009 00:05 
John 04/02/2009 07:47 
Rene 04/02/2009 08:42 
John 04/02/2009 08:48 
nyt 04/02/2009 09:06 
Radiodoc 04/02/2009 09:59 
John 04/02/2009 11:06 
Norm Leal 04/02/2009 16:49 
Radiodoc 04/02/2009 17:06 
End backlit. . .linear dial scale 04/02/2009 17:37 

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