[R-390] URM/25D dial lamps

[Roy Morgan]

On Jul 18, 2009, at 5:11 PM, Dave Merrill wrote:

> The correct number is 323 and here is one source:
>
> http://www.bulbman.com/index.php?main_page=product_bulb_info&products_id=15763
>
> About $4 ea plus shipping

These lamps have long been either hard to find or pricey.  I remember  
prices in the past being much higher than the $4 from the above source.

The URM- 25 *D* uses four of them.  The F model used different lamps  
altogether.

If you relamp  your D, I suggest you masure the actual lamp voltage  
and consider increasing the dropping resistor value to extend the  
life.  Some fellows in the past have changed the lamp type altogether  
to use a lamp more affordable and findable, and incidentally increase  
the amount of light that gets to the dial!

Roy


Roy Morgan
k1lky at earthlink.net
529 Cobb St.
Groton NY, 13073
Home: 607-898-3607
Cell: 301-928-7794