[Boatanchors] Lamps for R-1051/Harris/etc

[Gerry Steffens]

Thanks for the data Al.

I guess I'm getting' too dad burned old.  I'll go with the 32% to 52% more
illumination of the 47 unless changing the bulb involves standing on one's
head in the middle of the Sahara Desert at midday for a lengthy period of
time.  Sometimes if current isn't a problem, I will even use a 44 (0.25 amp
if I remember)to get 80% more brightness than the 47.

Cheers from Minnesota,

Gerry



-----Original Message-----
From: Al Parker [mailto:anchor at ec.rr.com] 
Sent: Sunday, April 05, 2009 7:24 PM
To: Gerry Steffens; k4oah at mindspring.com; 'Boatanchorslist'
Subject: Re: [Boatanchors] Lamps for R-1051/Harris/etc

Hi all,

bulb     I         cp      hrs
47       .15a    .50    3000
1847   .15     .38    5000
755     .15    .33    20,000

73,
Al, W8UT
New Bern, NC
www.boatanchors.org
www.hammarlund.info

"there is nothing -absolutely nothing- half as much worth doing as simply 
messing about in boats."
   Ratty, to Mole


----- Original Message ----- 
From: "Gerry Steffens" <gsteffens at pitel.net>
To: <k4oah at mindspring.com>; "'Boatanchorslist'" 
<boatanchors at mailman.qth.net>
Sent: Sunday, April 05, 2009 7:58 PM
Subject: Re: [Boatanchors] Lamps for R-1051/Harris/etc


> So, we have three bulbs with different lives but interchangeable: 47, 1847
> and 755.
>
> Is the current the same (for current sensitive circuits) and the lumen
> output the same, more or less (for some of those old dials that require
> significant light to promote visibility)?
>
> I have used long life bulbs in equipment (miniature) and out in the garage
> in trouble lights (full sized bulbs).  However, they usually have 
> noticeably
> lower light output making them unsuitable for some dial applications and 
> in
> the garage unsuitable for older eyes under the cars.
>
> Gerry
>
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