Thanks for the information. I have ordered 10 bulbs (@38¢ each) from Jamco,
and I will soon find out how much of a pain it is to replace the bulbs. If
replacement frequency is too high, I will follow another person's suggestion
and replace the bulb with a 6.3V version. In your estimated life for the
1850, you listed the estimated life as "1,5000" so I'm not sure if you meant
1500 or 15000 hours. 1500 hours seems a bit short. :-)

John, N9JG

"gb" wrote in message
...
One stop for good minature bulb references, Chicago Miniature Lamp (now
CML)
http://www.chml.com/

Incandescent Lamp Applications (great Tech Notes for bulb selection &
substitutes) - Adobe Acrobat
http://www.chml.com/assets/databookp...Tech_Notes.pdf

An 1850 is a T-3 1/4 Miniature Bayonet Base
ALSO, notice that this bulb only has a 1,5000 hour estimated life
MS CP will give you a "rough" brightness indication for your application

Miniature Incandescent Lamp References (they have LEDs also)
http://www.chml.com/assets/databookpdf/2-53.pdf

w9gb